AD AD5627RBRMZ-2 Dual, 12-/14-/16-bit nanodacs with 5ppm/c on-chip ref, i2c interface Datasheet

Preliminary Technical Data
Dual, 12-/14-/16-Bit nanoDACs® with
5ppm/°C On-Chip Ref, I2C Interface
AD5627R/AD5647R/AD5667R
AD5627/AD5667
FEATURES
Low power, smallest pin-compatible, dual nanoDACs
AD5627R/AD5647R/AD5667R
12-/14-/16- bit
On-chip 1.25 V/2.5 V, 5 ppm/°C reference
AD5625/AD5665
12-/16- bit
External reference only
3 mm x 3 mm LFCSP and 10-lead MSOP
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to zero scale
Per channel power-down
I2C-compatible serial interface supports standard (100 kHz),
fast (400 kHz), and high speed (3.4 MHz) modes
V DD
V REFIN /V REFOUT
GND
AD5627R/AD5647R/AD5667R
ADDR
1.25V/2.5V REF
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
BUFFER
V OUTA
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
BUFFER
V OUTB
INTERFACE
LOGIC
SCL
SDA
POWER-ON
RESET
LDAC
POWER-DOWN
LOGIC
CLR
V DD
V REFIN
GND
AD5627/AD5667
ADDR
SCL
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
BUFFER
V OUTA
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
BUFFER
V OUTB
INTERFACE
LOGIC
SDA
POWER-ON
RESET
APPLICATIONS
LDAC
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
POWER-DOWN
LOGIC
CLR
Figure 1. Functional Block Diagrams
GENERAL DESCRIPTION
The AD5627R/AD5647R/AD5667R, AD5627/AD5667,
members of the nanoDAC family, are low power, dual, 12-, 14-,
16-bit buffered voltage-out DACs with/without on-chip
reference. All devices operate from a single 2.7 V to 5.5 V
supply, are guaranteed monotonic by design and have an I2Ccompatible serial interface .
The AD5627R/AD5647R/AD5667R have an on-chip reference. The
AD56x7RBCPZ have a 1.25 V, 5 ppm/°C reference, giving a full-scale
output range of 2.5 V; the AD56x7RBRUZ have a 2.5 V, 5 ppm/°C
reference giving a full-scale output range of 5 V. The on-chip
reference is off at power-up, allowing the use of an external reference.
The internal reference is enabled via a software write. The AD5667
and AD5627 require an external reference voltage to set the
output range of the DAC
The part incorporates a power-on reset circuit that ensures the
DAC output powers up to 0 V and remains there until a valid
write takes place. The part contains a per-channel power-down
feature that reduces the current consumption of the device to
480 nA at 5 V and provides software-selectable output loads
while in power-down mode. The low power consumption of
this part in normal operation makes it ideally suited to portable
battery-operated equipment. The on-chip precision output
amplifier enables rail-to-rail output swing.
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 use a 2wire I2C-compatible serial interface that operates in standard
(100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes.
Table 1. Related Devices
Part No.
AD5663
AD5623R/AD5643R/AD5663R
AD5625R/AD5645R/AD5665R
AD5625/AD5665
Description
2.7 V to 5.5 V, Dual 16-bit DAC,
external reference, SPI interface
2.7 V to 5.5 V, Dual 12-, 14-, 16bit DACs, internal reference, SPI
interface
2.7 V to 5.5 V, quad 12-, 14- 16bit DACs, with/without internal
reference, I2C interface
Rev. PrA
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
TABLE OF CONTENTS
Features...................................................................................1
Write Operation.....................................................................20
Applications ...........................................................................1
Read Operation......................................................................20
General Description .............................................................1
High Speed Mode ..................................................................21
Product Highlights................................................................1
Multiple Byte Write ...............................................................21
Table1. Related Devices ........................................................2
Broadcast Mode .....................................................................22
TABLE OF CONTENTS ......................................................2
Input Shift Register................................................................22
Specifications .........................................................................3
Write Commands and LDAC...............................................23
AC Characteristics ................................................................4
LDAC Setup............................................................................23
2
I C Timing Specifications.....................................................5
LDAC Pin.................................................................................24
Absolute Maximum Ratings ................................................7
Power-Down Modes..............................................................24
Pin Configuration and Function Descriptions..................8
Power-on Reset and Software Reset ....................................25
Typical Performance Characteristics ..................................9
Internal Reference Setup.......................................................25
Terminology...........................................................................17
Clear Pin (CLR) .....................................................................25
Theory of Operation .............................................................19
Applications............................................................................26
D/A Section............................................................................19
Using A Reference as Power Supply ....................................26
Resistor String........................................................................19
Bipolar Operation..................................................................26
Output Amplifier...................................................................19
Power Supply Bypassing and Grounding ...........................26
Internal Reference .................................................................19
Outline Dimensions ..............................................................27
External Reference ................................................................19
Ordering Information ...........................................................28
Serial Interface .......................................................................19
REVISION HISTORY
4/06—Revision 0: Initial Version
Rev. PrA. | Page 2 of 30
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Specifications: AD5627R/AD5647R/AD5667R, AD5627/AD5667
VDD = 2.7 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; VREFIN = VDD; all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
STATIC PERFORMANCE2
AD5667R/AD5667
Resolution
Relative Accuracy
Differential Nonlinearity
AD5647R
Resolution
Relative Accuracy
Differential Nonlinearity
AD5627R/AD5627
Resolution
Relative Accuracy
Differential Nonlinearity
Zero-Code Error
Offset Error
Full-Scale Error
Gain Error
Zero-Code Error Drift
Gain Temperature
DC Power Supply Rejection
DC Crosstalk (External
Reference)
Min
DC Output Impedance
Short-Circuit Current
Power-Up Time
REFERENCE INPUTS
Reference Current
Reference Input Range
Reference Input Impedance
REFERENCE OUTPUT (LFCSP
PACKAGE)
Output Voltage
Reference TC3
Output Impedance
REFERENCE OUTPUT (MSOP
PACKAGE)
Output Voltage
Reference TC3
Output Impedance
Max
Unit
Conditions/Comments
±16
±1
Bits
LSB
LSB
Guaranteed monotonic by design
±4
±0.5
Bits
LSB
LSB
Guaranteed monotonic by design
16
±8
14
±2
12
±2
±2.5
−100
10
Bits
LSB
LSB
mV
mV
% of FSR
% of FSR
µV/°C
ppm
dB
µV
10
5
25
µV/mA
µV
µV
20
10
µV/mA
µV
±0.5
2
±1
−0.1
DC Crosstalk (Inernal
Reference)
OUTPUT CHARACTERISTICS3
Output Voltage Range
Capacitive Load Stability
B Grade1
Typ
0
±1
±0.25
10
±10
±1
±1.5
VDD
2
10
0.5
30
4
170
0.75
±5
7.5
Of FSR/°C
DAC code = midscale ; VDD = 5V ± 10%
Due to full-scale output change,
RL = 2 kΩ to GND or VDD
Due to load current change
Due to powering down (per channel)
Due to full-scale output change,
RL = 2 kΩ to GND or VDD
Due to load current change
Due to powering down (per channel)
RL = ∞
RL = 2 kΩ
VDD = 5 V
Coming out of power-down mode; VDD = +5 V
µA
V
kΩ
VREF = VDD = 5.5 V
1.253
V
ppm/°C
kΩ
At ambient
2.505
±10
V
ppm/°C
kΩ
At ambient
±10
7.5
2.495
All ones loaded to DAC register
200
VDD
26
1.247
V
nF
nF
Ω
mA
µs
Guaranteed monotonic by design
All zeroes loaded to DAC register
Rev. PrA. | Page 3 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Parameter
LOGIC INPUTS (SDA, SCL)
IIN, Input Current
VINL, Input Low Voltage
VINH, Input High Voltage
CIN, Pin Capacitance
VHYST, Input Hysteresis
LOGIC OUTPUTS (OPEN DRAIN)
VOL, Output Low Voltage
Min
Max
Unit
±1
0.3 × VDD
µA
V
V
pF
0.7 × VDD
2
0.1 × VDD
Floating-State Leakage Current
Floating-State Output
POWER REQUIREMENTS
VDD
IDD (Normal Mode)4
VDD = 4.5 V to 5.5 V
VDD = 2.7 V to 3.6 V
VDD = 4.5 V to 5.5 V
VDD = 2.7 V to 3.6 V
IDD (All Power-Down Modes)5
B Grade1
Typ
Preliminary Technical Data
Conditions/Comments
V
0.4
0.6
±1
V
V
µA
pF
5.5
V
0.55
0.5
1.2
1.15
1
mA
mA
mA
mA
µA
2
2.7
0.45
0.44
0.95
0.95
0.48
ISINK = 3 mA
ISINK = 6 mA
VIH = VDD, VIL = GND
Internal reference off
Internal reference off
Internal reference on
Internal reference on
VIH = VDD, VIL = GND
1
Temperature range: B grade: −40°C to +105°C.
Linearity calculated using a reduced code range: AD5667 (Code 512 to Code 65,024); AD5647 (Code 128 to Code 16,256); AD5627 (Code 32 to Code 4064). Output
unloaded.
3
Guaranteed by design and characterization, not production tested.
4
Interface inactive. All DACs active. DAC outputs unloaded.
5
All DACs powered down.
2
AC CHARACTERISTICS
VDD = 2.7 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; VREFIN = VDD; all specifications TMIN to TMAX, unless otherwise noted.1
Table 4.
Parameter2
Output Voltage Settling Time
AD5627R/AD5627
AD5647R
AD5667R/AD5667
Slew Rate
Digital-to-Analog Glitch Impulse
Digital Feedthrough
Reference Feedthrough
Digital Crosstalk
Analog Crosstalk
DAC-to-DAC Crosstalk
Multiplying Bandwidth
Total Harmonic Distortion
Output Noise Spectral Density
Output Noise
1
2
Min
Typ
Max
Unit
Conditions/Comments3
3
3.5
4
1.8
10
0.1
−90
0.1
1
4
1
4
340
−80
120
100
15
4.5
5
7
µs
µs
µs
V/µs
nV-s
nV-s
dBs
nV-s
nV-s
nV-s
nV-s
nV-s
kHz
dB
nV/√Hz
nV/√Hz
µV p-p
¼ to ¾ scale settling to ±0.5 LSB
¼ to ¾ scale settling to ±0.5 LSB
¼ to ¾ scale settling to ±2 LSB
Guaranteed by design and characterization, not production tested.
See the Terminology section.
Rev. PrA. | Page 4 of 30
1 LSB change around major carry
VREF = 2 V ± 0.1 V p-p, frequency 10 Hz to 20 MHz
External reference
Internal reference
External reference
Internal reference
VREF = 2 V ± 0.1 V p-p
VREF = 2 V ± 0.1 V p-p, frequency = 10 kHz
DAC code = midscale, 1 kHz
DAC code = midscale, 10 kHz
0.1 Hz to 10 Hz
Preliminary Technical Data
3
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Temperature range is −40°C to +105°C, typical at 25°C.
Rev. PrA. | Page 5 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
I2C TIMING SPECIFICATIONS
VDD = 2.7 V to 5.5 V; all specifications TMIN to TMAX, fSCL = 3.4 MHz, unless otherwise noted.1
Table 5.
Parameter
fSCL3
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t11A
Conditions2
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Limit at TMIN, TMAX
Min
Max
100
400
3.4
1.7
4
0.6
60
120
4.7
1.3
160
320
250
100
10
0
3.45
0
0.9
0
70
0
150
4.7
0.6
160
4
0.6
160
4.7
1.3
4
0.6
160
10
20
10
20
10
20
10
20
Unit
KHz
KHz
MHz
MHz
μs
μs
μs
μs
ns
ns
ns
ns
ns
μs
μs
ns
ns
μs
μs
ns
μs
μs
ns
μs
1000
300
80
160
300
300
80
160
1000
300
40
80
1000
μs
μs
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
300
80
160
ns
ns
ns
Rev. PrA. | Page 6 of 30
Description
Serial clock frequency
tHIGH, SCL high time
ns
ns
tLOW, SCL low time
tSU;DAT, data setup time
tHD;DAT, data hold time
tSU;STA, set-up time for a repeated start condition
tHD;STA, hold time (repeated) start condition
tBUF, bus free time between a stop and a start
condition
tSU;STO, setup time for a stop condition
tRDA, rise time of SDA signal
tFDA, fall time of SDA signal
tRCL, rise time of SCL signal
tRCL1, rise time of SCL signal after a repeated
start condition and after an acknowledge bit
Preliminary Technical Data
Parameter
t12
tSP4
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Conditions2
Standard mode
Fast mode
High speed mode, CB = 100 pF
High speed mode, CB = 400 pF
Fast mode
High speed mode
Limit at TMIN, TMAX
Min
Max
300
300
10
40
20
80
0
50
0
10
Unit
ns
ns
ns
ns
ns
ns
1
Description
tFCL, fall time of SCL signal
Pulse width of spike suppressed
See Figure 2. High speed mode timing specification applies only to the AD5627BRUZ-2 and AD5667BRUZ-2.
CB refers to the capacitance on the bus line.
3
The SDA and SCL timing is measured with the input filters enabled. Switching off the input filters improves the transfer rate but has a negative effect on EMC behavior
of the part.
4
Input filtering on the SCL and SDA inputs suppress noise spikes that are less than 50 ns for fast mode or 10 ns for high speed mode.
2
Figure 2. 2-Wire Serial Interface Timing Diagram
Rev. PrA. | Page 7 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 6.
Parameter
VDD to GND
VOUT to GND
VREFIN/VREFOUT to GND
Digital Input Voltage to GND
Operating Temperature Range
Industrial
Storage Temperature Range
Junction Temperature (TJ max)
Power Dissipation
LFCSP_WD Package (4-Layer Board)
θJA Thermal Impedance
MSOP Package
θJA Thermal Impedance
Reflow Soldering Peak Temperature
Pb-Free
Rating
−0.3 V to +7 V
−0.3 V to VDD + 0.3 V
−0.3 V to VDD + 0.3 V
−0.3 V to VDD + 0.3 V
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
−40°C to +105°C
−65°C to +150°C
150°C
(TJ max − TA)/θJA
61°C/W
150.4°C/W
260°C ± 5°C
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. PrA. | Page 8 of 30
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
V OUT A 1
V OUT B 2
GND 3
LDAC 4
AD5627(R)
AD5647R
AD5667(R)
TOP VIEW
CLR 5 (Not to Scale)
10 V REFIN /V REFOUT
9 V DD
8 SDA
7 SCL
6 ADDR
NOTE. VREFOUT IS AVAILABLE ONLY ON -R VERSIONS
Figure 3. Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
VOUTA
Analog output voltage from DAC C. The output amplifier has rail-to-rail operation.
2
VOUTB
Analog output voltage from DAC B. The output amplifier has rail-to-rail operation.
3
GND
Ground reference point for all circuitry on the part.
4
LDAC
Active low load DAC pin.
5
CLR
Asynchronous clear input. The CLR input is falling edge sensitive. While CLR is low, all LDAC pulses
are ignored. When CLR is activated, zero scale is loaded to all input and DAC registers. This clears the
output to 0 V. The part exits clear code mode on the 24th falling edge of the next write to the part. If
CLR is activated during a write sequence, the write is aborted.
6
ADDR
Three-state address input. Sets the two least significant bits (Bit A1, Bit A0) of the 7-bit slave address.
7
SCL
Serial clock line. This is used in conjunction with the SDA line to clock data into or out of the 16-bit
input register.
8
SDA
Serial data line. This is used in conjunction with the SCL line to clock data into or out of the 16-bit
input register. It is a bidirectional, open-drain data line that should be pulled to the supply with an
external pull-up resistor.
9
VDD
Power supply input. These parts can be operated from 2.7 V to 5.5 V, and the supply should be
decoupled with a 10 μF capacitor in parallel with a 0.1 μF capacitor to GND.
10
VREFIN/VREFOUT
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 have a common pin for reference input and
reference output. The internal reference and reference output are only available on suffix ---R
versions. When using the internal reference, this is the reference output pin. When using an external
reference, this is the reference input pin. The default for this pin is as a reference input.
(10-pin)
Rev. PrA. | Page 9 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
TYPICAL PERFORMANCE CHARACTERISTICS
1.0
10
VDD = VREF = 5V
TA = 25°C
0.6
4
0.4
2
0
–2
–4
0.2
0
–0.2
–0.4
–6
–0.6
–8
–0.8
0
5k 10k 15k 20k 25k 30k 35k 40k 45k 50k 55k 60k 65k
CODE
–1.0
05856-007
DNL ERROR (LSB)
6
–10
VDD = VREF = 5V
TA = 25°C
0.8
05858-005
INL ERROR (LSB)
8
0
30k
CODE
40k
50k
60k
0.5
VDD = VREF = 5V
TA = 25°C
3
20k
Figure 7. DNL AD5667, External Reference
Figure 4. INL AD5667, External Reference
4
10k
VDD = VREF = 5V
TA = 25°C
0.4
0.3
DNL ERROR (LSB)
INL ERROR (LSB)
2
1
0
–1
0.2
0.1
0
–0.1
–0.2
–2
05856-005
–4
0
2500
5000
7500
10000
CODE
12500
05856-008
–0.3
–3
–0.4
–0.5
15000
0
5000
7500
10000
CODE
12500
15000
Figure 8. DNL AD5647, External Reference
Figure 5. INL AD5647, External Reference
0.20
1.0
VDD = VREF = 5V
0.8 TA = 25°C
VDD = VREF = 5V
TA = 25°C
0.15
0.6
0.10
DNL ERROR (LSB)
0.4
0.2
0
–0.2
–0.4
0.05
0
–0.05
–0.10
–0.6
–0.8
–1.0
0
500
1000
1500
2000
2500
CODE
3000
3500
4000
–0.15
–0.20
05856-009
05856-006
INL ERROR (LSB)
2500
0
500
1000
1500
2000 2500
CODE
3000
Figure 9. DNL AD5627, External Reference
Figure 6. INL AD5627, External Reference
Rev. PrA. | Page 10 of 30
3500
4000
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
1.0
0.6
60000
65000
16250
55000
15000
50000
45000
40000
0
65000
CODE
05856-010
60000
55000
50000
45000
40000
35000
30000
25000
20000
15000
–1.0
10000
–0.8
0
–8
–10
5000
–0.6
05856-013
–0.4
–6
35000
–4
0
–0.2
30000
0
–2
0.2
25000
2
0.4
20000
4
DNL ERROR (LSB)
INL ERROR (LSB)
6
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
0.8
15000
8
10000
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
5000
10
CODE
Figure 13. DNL AD5667R, 2.5V Internal Reference
Figure 10. INL AD5667R, 2.5V Internal Reference
0.5
4
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
3
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
0.4
0.3
DNL ERROR (LSB)
INL ERROR (LSB)
2
1
0
–1
0.2
0.1
0
–0.1
–0.2
–2
CODE
13750
11250
12500
8750
10000
7500
6250
5000
3750
2500
0
CODE
Figure 14. DNL AD5647R, 2.5V Internal Reference
Figure 11. INL AD5647R, 2.5V Internal Reference
0.20
1.0
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
0.8
0.6
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
0.15
0.10
DNL ERROR (LSB)
0.4
0.2
0
–0.2
–0.4
0.05
0
–0.05
–0.10
–0.6
–0.8
–1.0
0
500
1000
1500
2000 2500
CODE
3000
3500
4000
–0.15
–0.20
05856-015
05856-012
INL ERROR (LSB)
1250
05856-011
16250
15000
13750
11250
12500
8750
10000
7500
6250
5000
3750
2500
1250
–0.5
0
–0.4
–4
05856-014
–0.3
–3
0
500
1000
1500
2000 2500
CODE
3000
3500
Figure 15. DNL AD5627R, 2.5V Internal Reference
Figure 12. INL AD5627R, 2.V5 Internal Reference
Rev. PrA. | Page 11 of 30
4000
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
10
1.0
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
8
0.6
4
DNL ERROR (LSB)
2
0
–2
–4
0.2
0
–0.2
–0.4
–0.6
05856-016
–6
0.4
65000
60000
55000
50000
45000
40000
35000
CODE
Figure 16. INL AD5667R,1.25V Internal Reference
05856-019
CODE
30000
25000
20000
15000
5000
–1.0
65000
60000
55000
50000
45000
40000
35000
30000
25000
20000
15000
5000
10000
0
–0.8
0
–8
–10
10000
INL ERROR (LSB)
6
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
0.8
Figure 19. DNL AD5667R,1.25V Internal Reference
4
0.5
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
3
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
0.4
0.3
DNL ERROR (LSB)
INL ERROR (LSB)
2
1
0
–1
0.2
0.1
0
–0.1
–0.2
–2
–0.3
05856-017
–0.4
16250
15000
13750
12500
11250
10000
8750
CODE
Figure 17. INL AD5647R, 1.25V Internal Reference
05856-020
CODE
7500
6250
5000
3750
2500
0
–0.5
16250
15000
13750
12500
11250
10000
8750
7500
6250
5000
3750
2500
1250
0
–4
1250
–3
Figure 20. DNL AD5647R,1.25V Internal Reference
1.0
0.20
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
0.8
0.6
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
0.15
DNL ERROR (LSB)
0.2
0
–0.2
–0.4
0.05
0
–0.05
–0.10
–0.6
–1.0
0
500
1000
1500
2000 2500
CODE
3000
3500
4000
Figure 18. INL AD5627R,1.25V Internal Reference
–0.20
0
500
1000
1500
2000 2500
CODE
3000
3500
Figure 21. DNL AD5627R, 1.25V Internal Reference
Rev. PrA. | Page 12 of 30
4000
05856-021
–0.15
–0.8
05856-018
INL ERROR (LSB)
0.10
0.4
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
8
0
6
VDD = VREF = 5V
VDD = 5V
–0.02
MAX INL
–0.04
GAIN ERROR
4
ERROR (% FSR)
2
MAX DNL
0
MIN DNL
–2
–0.08
–0.10
–0.12
–0.14
–4
MIN INL
05856-022
–6
–8
–40
–20
0
20
40
60
TEMPERATURE (°C)
FULL-SCALE ERROR
–0.16
80
–0.18
–0.20
–40
100
Figure 22. INL Error and DNL Error vs. Temperature
–20
0
20
40
60
TEMPERATURE (°C)
80
100
05856-025
ERROR (LSB)
–0.06
Figure 25. Gain Error and Full-Scale Error vs. Temperature
10
1.5
MAX INL
8
1.0
ZERO-SCALE ERROR
6
0.5
VDD = 5V
TA = 25°C
ERROR (mV)
ERROR (LSB)
4
2
MAX DNL
0
MIN DNL
–2
0
–0.5
–1.0
–4
–1.5
OFFSET ERROR
–6
MIN INL
1.75
2.25
2.75
3.25
VREF (V)
3.75
4.25
4.75
–2.5
–40
–20
0
20
40
60
TEMPERATURE (°C)
80
100
05856-026
1.25
05856-023
–8
–10
0.75
–2.0
Figure 23. INL and DNL Error vs. VREF
Figure 26. Zero-Scale Error and Offset Error vs. Temperature
8
1.0
6
MAX INL
TA = 25°C
0.5
GAIN ERROR
ERROR (% FSR)
2
MAX DNL
0
MIN DNL
–2
–4
0
FULL-SCALE ERROR
–0.5
–1.0
MIN INL
–6
3.2
3.7
4.2
VDD (V)
4.7
5.2
Figure 24. INL and DNL Error vs. Supply
–2.0
2.7
3.2
3.7
4.2
VDD (V)
4.7
5.2
Figure 27. Gain Error and Full-Scale Error vs. Supply
Rev. PrA. | Page 13 of 30
05856-027
–8
2.7
–1.5
05856-024
ERROR (LSB)
4
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
1.0
8
TA = 25°C
0.5
7
ZERO-SCALE ERROR
6
FREQUENCY
–0.5
–1.0
5
4
3
–1.5
2
–2.0
1
OFFSET ERROR
3.2
3.7
4.2
VDD (V)
4.7
5.2
0
05856-028
–2.5
2.7
Figure 28. Zero-Scale Error and Offset Error vs. Supply
05856-060
ERROR (mV)
0
6
VDD = 3.6V
TA = 25°C
0.39
0.40
0.41
IDD (mA)
0.42
0.43
Figure 31. IDD Histogram with External Reference, 3.6 V
8
VDD = 5.5V
TA = 25°C
VDD = 3.6V
TA = 25°C
7
6
4
FREQUENCY
FREQUENCY
5
3
5
4
3
2
2
0.41
0.42
0.43
IDD (mA)
0.44
Figure 29. IDD Histogram with External Reference, 5.5 V
6
0.94
IDD (mA)
0.96
0.5
VDD = 5.5V
TA = 25°C
0.4
DAC LOADED WITH
FULL-SCALE
SOURCING CURRENT
DAC LOADED WITH
ZERO-SCALE
SINKING CURRENT
ERROR VOLTAGE (V)
0.3
4
3
2
0.2
0.1
VDD = 3V
VREFOUT = 1.25V
0
–0.1
–0.2
VDD = 5V
VREFOUT = 2.5V
–0.3
1
05856-030
FREQUENCY
0.92
0.90
Figure 32. IDD Histogram with Internal Reference, VREFOUT = 1.25 V
5
0
05856-061
0
0.45
0.92
0.94
0.96
IDD (mA)
0.98
–0.4
–0.5
–10
–8
–6
–4
–2
0
2
CURRENT (mA)
4
6
Figure 33. Headroom at Rails vs. Source and Sink
Figure 30. IDD Histogram with Internal Reference, VREFOUT = 2.5 V
Rev. PrA. | Page 14 of 30
8
10
05856-031
0
1
05856-029
1
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
6
5
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
FULL SCALE
3/4 SCALE
VOUT (V)
4
3
VDD = VREF = 5V
TA = 25°C
FULL-SCALE CODE CHANGE
0x0000 TO 0xFFFF
OUTPUT LOADED WITH 2kΩ
AND 200pF TO GND
MIDSCALE
2
1/4 SCALE
1
VOUT = 909mV/DIV
–20
–10
0
10
CURRENT (mA)
20
1
05856-046
–1
–30
ZERO SCALE
30
05856-048
0
TIME BASE = 4µs/DIV
Figure 37. Full-Scale Settling Time, 5 V
Figure 34. AD56x7R with 2.5V Reference, Source and Sink Capability
4
VOUT (V)
3
VDD = VREF = 5V
TA = 25°C
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
FULL SCALE
3/4 SCALE
2
MIDSCALE
1
VDD
1
1/4 SCALE
0
ZERO SCALE
MAX(C2)
420.0mV
2
–10
0
10
CURRENT (mA)
20
30
CH1 2.0V
Figure 35. AD56x7 with 1.25V Reference, Source and Sink Capability
0.50
CH2 500mV
M100µs 125MS/s
A CH1
1.28V
8.0ns/pt
05856-049
–20
05856-047
VOUT
–1
–30
Figure 38. Power-On Reset to 0 V
SYNC
VDD = VREFIN = 5V
0.45
1
0.40
VDD = VREFIN = 3V
0.30
0.25
0.20
0.15
VOUT
0.10
VDD = 5V
0.05
TA = 25°C
0
–40
–20
0
20
40
60
TEMPERATURE (°C)
80
100
05856-050
2
05856-063
IDD (mA)
SLCK
3
0.35
CH1 5.0V
CH3 5.0V
CH2 500mV
M400ns
A CH1
Figure 39. Exiting Power-Down to Midscale
Figure 36. Supply Current vs. Temperature
Rev. PrA. | Page 15 of 30
1.4V
VDD = VREF = 5V
TA = 25°C
DAC LOADED WITH MIDSCALE
VDD = VREF = 5V
TA = 25°C
5ns/SAMPLE NUMBER
GLITCH IMPULSE = 9.494nV
1LSB CHANGE AROUND
MIDSCALE (0x8000 TO 0x7FFF)
1
0
50
100
150
200 250 300 350
SAMPLE NUMBER
400
450
Y AXIS = 2µV/DIV
X AXIS = 4s/DIV
512
Figure 43. 0.1 Hz to 10 Hz Output Noise Plot, External Reference
Figure 40. Digital-to-Analog Glitch Impulse (Negative)
2.498
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
DAC LOADED WITH MIDSCALE
VDD = VREF = 5V
TA = 25°C
5ns/SAMPLE NUMBER
ANALOG CROSSTALK = 0.424nV
2.497
05856-051
2.538
2.537
2.536
2.535
2.534
2.533
2.532
2.531
2.530
2.529
2.528
2.527
2.526
2.525
2.524
2.523
2.522
2.521
Preliminary Technical Data
05856-058
VOUT (V)
AD5627R/AD5647R/AD5667R, AD5627/AD5667
10µV/DIV
VOUT (V)
2.496
2.495
2.494
1
0
50
100
150
200 250 300 350
SAMPLE NUMBER
400
450
Figure 44. 0.1 Hz to 10 Hz Output Noise Plot, 2.5 V Internal Reference
5µV/DIV
VDD = 3V
VREFOUT = 1.25V
TA = 25°C
DAC LOADED WITH MIDSCALE
VDD = 5V
VREFOUT = 2.5V
TA = 25°C
5ns/SAMPLE NUMBER
ANALOG CROSSTALK = 4.462nV
0
50
100
150
200 250 300 350
SAMPLE NUMBER
400
Figure 42. Analog Crosstalk, Internal Reference
450
1
05856-062
VOUT (V)
Figure 41. Analog Crosstalk, External Reference
2.496
2.494
2.492
2.490
2.488
2.486
2.484
2.482
2.480
2.478
2.476
2.474
2.472
2.470
2.468
2.466
2.464
2.462
2.460
2.458
2.456
5s/DIV
512
512
4s/DIV
05856-053
2.491
05856-059
2.492
05856-052
2.493
Figure 45. 0.1 Hz to 10 Hz Output Noise Plot,1.25 V Internal Reference
Rev. PrA. | Page 16 of 30
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
800
16
TA = 25°C
MIDSCALE LOADED
700
VREF = VDD
TA = 25°C
VDD = 3V
12
TIME (µs)
500
400
300
1k
10k
FREQUENCY (Hz)
100k
1M
4
0
–20
–40
2
3
4
5
6
7
CAPACITANCE (nF)
8
9
10
Figure 48. Settling Time vs. Capacitive Load
Figure 46. Noise Spectral Density, Internal Reference
–30
1
05856-056
0
100
VDD = 5V
6
VDD = 3V
VREFOUT = 1.25V
100
10
8
VDD = 5V
VREFOUT = 2.5V
200
05856-054
OUTPUT NOISE (nV/√Hz)
14
600
5
VDD = 5V
TA = 25°C
DAC LOADED WITH FULL SCALE
VREF = 2V ± 0.3V p-p
VDD = 5V
TA = 25°C
0
–5
–10
(dB)
–60
–70
–15
–20
–30
–90
–35
–100
2k
4k
6k
FREQUENCY (Hz)
8k
10k
Figure 47. Total Harmonic Distortion
–40
10k
100k
1M
FREQUENCY (Hz)
Figure 49. Multiplying Bandwidth
Rev. PrA. | Page 17 of 30
10M
05856-057
–25
–80
05856-055
(dB)
–50
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
TERMINOLOGY
Relative Accuracy or Integral Nonlinearity (INL)
For the DAC, relative accuracy or integral nonlinearity is a
measurement of the maximum deviation, in LSBs, from a
straight line passing through the endpoints of the DAC transfer
function.
Differential Nonlinearity (DNL)
Differential nonlinearity is the difference between the measured
change and the ideal 1 LSB change between any two adjacent
codes. A specified differential nonlinearity of ±1 LSB maximum
ensures monotonicity. This DAC is guaranteed monotonic by
design.
Zero-Code Error
Zero-code error is a measurement of the output error when
zero scale (0x0000) is loaded to the DAC register. Ideally, the
output should be 0 V. The zero-code error is always positive in
the AD5667R because the output of the DAC cannot go below
0 V due to a combination of the offset errors in the DAC and
the output amplifier. Zero-code error is expressed in mV.
Full-Scale Error
Full-scale error is a measurement of the output error when fullscale code (0xFFFF) is loaded to the DAC register. Ideally, the
output should be VDD − 1 LSB. Full-scale error is expressed in
percent of full-scale range.
Gain Error
This is a measure of the span error of the DAC. It is the deviation
in slope of the DAC transfer characteristic from ideal expressed
as % of FSR.
Zero-Code Error Drift
This is a measurement of the change in zero-code error with a
change in temperature. It is expressed in µV/°C.
Gain Temperature Coefficient
This is a measurement of the change in gain error with changes
in temperature. It is expressed in ppm of FSR/°C.
Offset Error
Offset error is a measure of the difference between VOUT (actual)
and VOUT (ideal) expressed in mV in the linear region of the
transfer function. Offset error is measured on the AD5667R
with code 512 loaded in the DAC register. It can be negative or
positive.
DC Power Supply Rejection Ratio (PSRR)
This indicates how the output of the DAC is affected by
changes in the supply voltage. PSRR is the ratio of the change in
VOUT to a change in VDD for full-scale output of the DAC. It is
measured in dB. VREF is held at 2 V, and VDD is varied by ±10%.
Output Voltage Settling Time
This is the amount of time it takes for the output of a DAC to
settle to a specified level for a ¼ to ¾ full-scale input change
and is measured from the rising edge of the STOP condition.
Digital-to-Analog Glitch Impulse
Digital-to-analog glitch impulse is the impulse injected into the
analog output when the input code in the DAC register changes
state. It is normally specified as the area of the glitch in nV-s,
and is measured when the digital input code is changed by
1 LSB at the major carry transition (0x7FFF to 0x8000) (see
Figure).
Digital Feedthrough
Digital feedthrough is a measure of the impulse injected into
the analog output of the DAC from the digital inputs of the
DAC, but is measured when the DAC output is not updated. It
is specified in nV-s, and measured with a full-scale code change
on the data bus, that is, from all 0s to all 1s and vice versa.
Reference Feedthrough
Reference feedthrough is the ratio of the amplitude of the signal
at the DAC output to the reference input when the DAC output
is not being updated. It is expressed in dB.
Noise Spectral Density
This is a measurement of the internally generated random
noise. Random noise is characterized as a spectral density
(nV/√Hz). It is measured by loading the DAC to midscale and
measuring noise at the output. It is measured in nV/√Hz. A plot
of noise spectral density can be seen in Figure .
DC Crosstalk
DC crosstalk is the dc change in the output level of one DAC in
response to a change in the output of another DAC. It is
measured with a full-scale output change on one DAC (or soft
power-down and power-up) while monitoring another DAC kept
at midscale. It is expressed in μV.
DC crosstalk due to load current change is a measure of the
impact that a change in load current on one DAC has to
another DAC kept at midscale. It is expressed in μV/mA.
Digital Crosstalk
This is the glitch impulse transferred to the output of one DAC
at midscale in response to a full-scale code change (all 0s to all
1s and vice versa) in the input register of another DAC. It is
measured in standalone mode and is expressed in nV-s.
Rev. PrA. | Page 18 of 30
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Analog Crosstalk
This is the glitch impulse transferred to the output of one DAC
due to a change in the output of another DAC. It is measured by
loading one of the input registers with a full-scale code change
(all 0s to all 1s and vice versa). Then execute a software LDAC
and monitor the output of the DAC whose digital code was not
changed. The area of the glitch is expressed in nV-s.
DAC-to-DAC Crosstalk
This is the glitch impulse transferred to the output of one DAC
due to a digital code change and subsequent analog output
change of another DAC. It is measured by loading the attack
channel with a full-scale code change (all 0s to all 1s and vice
versa) using the command write to and update while
monitoring the output of the victim channel that is at midscale.
The energy of the glitch is expressed in nV-s.
Multiplying Bandwidth
The amplifiers within the DAC have a finite bandwidth. The
multiplying bandwidth is a measure of this. A sine wave on the
reference (with full-scale code loaded to the DAC) appears on
the output. The multiplying bandwidth is the frequency at
which the output amplitude falls to 3 dB below the input.
Total Harmonic Distortion (THD)
This is the difference between an ideal sine wave and its
attenuated version using the DAC. The sine wave is used as the
reference for the DAC, and the THD is a measurement of the
harmonics present on the DAC output. It is measured in dB.
Rev. PrA. | Page 19 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
THEORY OF OPERATION
D/A SECTION
R
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 DACs
are fabricated on a CMOS process. The architecture consists of
a string DAC followed by an output buffer amplifier. Figure 50
shows a block diagram of the DAC architecture.
R
TO OUTPUT
AMPLIFIER
R
V DD
REF (+)
DAC
REGISTER
OUTPUT
AMPLIFIER
GAIN = +2
RESISTOR
STRING
REF (-)
V OUT
R
GND
Figure 50. DAC Architecture
R
Because the input coding to the DAC is straight binary, the ideal
output voltage when using an external reference is given by
VOUT = VREFIN
Figure 51. Resistor String
D
× ⎛⎜ N ⎞⎟
⎝2 ⎠
INTERNAL REFERENCE
The ideal output voltage when using the internal reference is
given by
D
VOUT = 2 × V REFOUT × ⎛⎜ N ⎞⎟
⎝2 ⎠
where:
D is the decimal equivalent of the binary code that is loaded to
the DAC register:
0 to 4095 for AD5627R/AD5627 (12 bit).
0 to 16,383 for AD5647R (14 bit).
0 to 65,535 for AD5667R/AD5667 (16 bit).
N is the DAC resolution.
RESISTOR STRING
The resistor string is shown in Figure 51. It is simply a string of
resistors, each of value R. The code loaded to the DAC register
determines at which node on the string the voltage is tapped off
to be fed into the output amplifier. The voltage is tapped off by
closing one of the switches connecting the string to the
amplifier. Because it is a string of resistors, it is guaranteed
monotonic.
OUTPUT AMPLIFIER
The output buffer amplifier can generate rail-to-rail voltages on
its output, which gives an output range of 0 V to VDD. It can drive
a load of 2 kΩ in parallel with 1000 pF to GND. The source and
sink capabilities of the output amplifier can be seen in Figure and
Figure. The slew rate is 1.8 V/µs with a ¼ to ¾ full-scale settling
time of 7 µs.
The AD5627R/AD5647R/AD5667R feature an on-chip
reference. Versions without the –R suffix require an external
reference. The on-chip reference is off at power-up and is
enabled via a write to a control register. See the Internal
Reference Setup section for details.
Versions packaged in 10-lead LFCSP package have a 1.25 V
reference, giving a full scale output of 2.5 V. These parts can be
operated with a VDD supply of 2.7V to 5.5V. Versions packaged
in 10-lead MSOP package have a 2.5 V reference, giving a fullscale output of 5 V. Parts are functional with a VDD supply of
2.7V to 5.5V but for VDD supply of less than 5V, the output will
be clamped to VDD. See the Ordering Information on the back
page for a full list of models. The internal reference associated
with each part is available at the VREFOUT pin.
A buffer is required if the reference output is used to drive
external loads. When using the internal reference, it is
recommended that a 100 nF capacitor is placed between
reference output and GND for reference stability.
EXTERNAL REFERENCE
The VREFIN pin on the AD56x7R allows the use of an external
reference if the application requires it. The default condition of
the on-chip reference is off at power-up. All devices can be
operated from a single 2.7 V to 5.5 V supply.
SERIAL INTERFACE
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 have 2wire I2C-compatible serial interfaces (refer to I2C-Bus
Specification, Version 2.1, January 2000, available from Philips
Semiconductor). The AD5627R/AD5647R/AD5667R,
AD5627/AD5667 can be connected to an I2C bus as a slave
device, under the control of a master device. See Figure 2 for a
timing diagram of a typical write sequence.
Rev. PrA. | Page 20 of 30
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 support
standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz)
data transfer modes. High-speed operation is only available on
selected models. See the Ordering Information on the back
page for a full list of models. Support is not provided for 10-bit
addressing and general call addressing.
1. The master initiates data transfer by establishing a start
condition, which is when a high-to-low transition on the
SDA line occurs while SCL is high. The following byte is the
address byte, which consists of the 7-bit slave address. The
slave address corresponding to the transmitted address
responds by pulling SDA low during the ninth clock pulse
(this is termed the acknowledge bit). At this stage, all other
devices on the bus remain idle while the selected device waits
for data to be written to, or read from, its shift register.
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 each
have a 7-bit slave address. The two LSBs are set by the state of
the ADDR address pin, which determines the state of the A0
and A1 address bits.
2. Data is transmitted over the serial bus in sequences of nine clock
pulses (eight data bits followed by an acknowledge bit). The
transitions on the SDA line must occur during the low period of
SCL and remain stable during the high period of SCL.
3. When all data bits have been read or written, a stop
condition is established. In write mode, the master pulls the
SDA line high during the 10th clock pulse to establish a
stop condition. In read mode, the master issues a no
acknowledge for the ninth clock pulse (that is, the SDA line
remains high). The master then brings the SDA line low
before the 10th clock pulse, and then high during the 10th
clock pulse to establish a stop condition.
The ADDR pin is three-state, and can be set as shown in Table
8 to give three different addresses.
Table 8. ADDR Pin Settings
ADDR PIN CONNECTION
A1
A0
VDD
0
0
No Connection
1
0
GND
1
1
The 2-wire serial bus protocol operates as follows:
1
9
1
9
SCL
SDA
0
0
0
1
1
A1
A0
START BY
MASTER
DB23 D B22 DB2 1 D B20 DB19 DB 18 D B17 DB1 6
R/W
ACK. BY
AD56x7
ACK. BY
AD56x7
FRAME 2
COMMAND BYTE
FRAME 1
SLAVE ADDRESS
1
9
1
9
SCL
(CONTINUED)
SDA
(CONTINUED)
DB15 DB14 DB 13 D B12 DB 11 D B10
DB 9
D B8
D B7
DB6
ACK. BY
AD56x7
FRAME 3
MOST SIGNIFICANT
DATA BYTE
DB5
D B4
D B3
D B2
FRAME 4
LEAST SIGNIFICANT
DATA BYTE
DB 1
DB0
ACK. BY
AD56x7
STOP BY
MASTER
Figure 52. I2C Write Operation
WRITE OPERATION
READ OPERATION
When writing to the AD5627R/AD5647R/AD5667R,
AD5627/AD5667, the user must begin with a start command
followed by an address byte (R/W = 0), after which the DAC
acknowledges that it is prepared to receive data by pulling SDA
low. The AD5667 requires two bytes of data for the DAC and a
command byte that controls various DAC functions. Three
bytes of data must therefore written to the DAC, the command
byte followed by the most significant data byte and the least
significant data byte, as shown in Figure 52. All these data
bytes are acknowledged by the AD5627R/AD5647R/AD5667R,
AD5627/AD5667. A stop condition follows.
When reading data back from the
AD5627R/AD5647R/AD5667R, AD5627/AD5667, the user
begins with a start command followed by an address byte (R/W
= 1), after which the DAC acknowledges that it is prepared to
transmit data by pulling SDA low. Two bytes of data are then
read from the DAC, which are both acknowledged by the
master as shown in Figure 53. A stop condition follows.
Note that the only data that can be read back from the AD56x7
is the contents of the input shift register (see section on Control
Register).
Rev. PrA. | Page 21 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
1
9
Preliminary Technical Data
9
1
SCL
0
SDA
0
0
1
1
A1
DB23 DB 22 D B21 DB 20 DB1 9 DB 18 D B17 DB 16
R/W
A0
ACK. BY
AD56x7
START BY
MASTER
ACK. BY
MASTER
FRAME 2
COMMAND BYTE
FRAME 1
SLAVE ADDRESS
1
9
1
9
SCL
(CONTINUED)
SDA
(CONTINUED)
DB15 DB14 D B13 DB12 D B11 DB1 0
DB 9
DB7
D B8
DB6
DB 5
ACK. BY
MASTER
FRAME 3
MOST SIGNIFICANT
DATA BYTE
D B4
D B3
DB 2
D B1
DB 0
NO ACK.
FRAME 4
LEAST SIGNIFICANT
DATA BYTE
STOP BY
MASTER
Figure 53. I2C Read Operation
HIGH SPEED MODE
Some models offer high-speed serial communication with a
clock frequency of 3.4 MHz. See the Ordering Information on
the back page for a full list of models.
acknowledge the high speed master code, therefore, the code is
followed by a no acknowledge. The master must then issue a
repeated start followed by the device address. The selected
device then acknowledges its address. All devices continue to
operate in high speed mode until the master issues a stop
condition. When the stop condition is issued, the devices
return to standard/fast mode. The part will also exit high speed
mode when CLR is activated.
High speed mode communication commences after the master
addresses all devices connected to the bus with the Master Code
00001XXX to indicate that a high speed mode transfer is to
begin. No device connected to the bus is permitted to
HIGH-SPEED MODE
FAST MODE
1
9
1
9
SCL
SDA
0
0
0
0
1
X
X
X
0
NACK
START BY
MASTER
0
0
1
1
A1
SR
A0
R/W
ACK. BY
AD56x7
SERIAL BUS ADDRESS BYTE*
HS-MODE MASTER CODE
Figure 54. Placing the AD56x7 in High-Speed Mode
MULTIPLE BYTE WRITE
Once an AD56x7 has been addressed, one or more three-byte
blocks of command and data can be sent to the device, until a
stop condition is received. The device must then be readdressed. For this type of operation, the “S” bit in the
command byte is set to zero.
For some types of application such as waveform generation, it
may be required to update a DAC or DACs as fast as possible
without changing the command byte. In this case the “S” bit in
the initial command byte is set to 1. This sets the command
parameters for all subsequent data. Thereafter, multiple twobyte blocks of data high byte and data low byte can be sent,
without sending a further command byte, until a stop condition
is received.
The “S” bit is only active in the first command byte following
the device slave address. Therefore, even if the “S” bit is 0 and
three-byte blocks of command and data are being sent, it is not
possible to alter the multi-byte mode by changing the “S” bit to
1 “on-the-fly” during any subsequent command byte.
BLOCK 1
BLOCK 2
S=0
S=0
SLAVE
COMMAND MOST SIGNIFICANT LEAST SIGNIFICANT COMMAND MOST SIGNIFICANT LEAST SIGNIFICANT
ADDRESS
BYTE
DATA BYTE
DATA BYTE
BYTE
DATA BYTE
DATA BYTE
BLOCK n
S=0
COMMAND MOST SIGNIFICANT LEAST SIGNIFICANT
STOP
BYTE
DATA BYTE
DATA BYTE
Figure 55. Multiple Block Write With Command Byte in Each Block (S=0)
Rev. PrA. | Page 22 of 30
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
BLOCK 1
BLOCK 2
S=1
S=1
SLAVE
COMMAND MOST SIGNIFICANT LEAST SIGNIFICANT MOST SIGNIFICANT LEAST SIGNIFICANT
ADDRESS
BYTE
DATA BYTE
DATA BYTE
DATA BYTE
DATA BYTE
BLOCK n
S=1
MOST SIGNIFICANT LEAST SIGNIFICANT
STOP
DATA BYTE
DATA BYTE
Figure 56. Multiple Block Write With Initial Command Byte Only (S=1)
BROADCAST MODE
- a three-bit address that tells the device to which DAC or
DACs the command applies.
In addition to the unique slave address for each device, which is
set by the address pin(s), The AD56x7 has a broadcast address
to which any AD56x7 will respond, irrespective of the state of
the address pin(s). This address is 0001000(Write). Where
several AD56x7 devices are connected to a bus, they can all be
sent the same data using the broadcast address. The broadcast
address only works for write operations. It is not possible to
read back data from several devices at the same time, due to bus
contention.
- 16 bits of data, which, depending on the command may be
written to a DAC or used to define the parameters of a
command operation.
Bit 23 of the input shift register is reserved, and should always
be set to 0 when writing to the device.
- One bit to select multiple byte operation.
The command and address are contained in the command byte,
the 8 MSBs of the input register. The middle 8 bits are the high
byte of the DAC data, while the 8 least significant bits are the
low byte of the DAC data or command data. DAC data is left
justified, so the two LSBs are unused for the 14 bit AD5647R,
and the four LSBs are unused for the 12-bit AD5627R (but they
are still used for command data in these devices.
- a three bit command that tells the device what operation to
perform.
The AD56x7 has seven different commands that can be written
to it.
INPUT SHIFT REGISTER
The input shift register is 24 bits wide to store the 3 data bytes
written to the device of the serial interface. Data written to the
device is split into four sections:
R
S
RESERVED
BYTE
SELECTION
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10
C2
C1
C0
COMMAND
A2
A1
A0
D15
D14
D13
DAC ADDRESS
COMMAND BYTE
D12
D11
D10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
DAC DATA
DAC OR COMMAND DATA
DATA HIGH BYTE
DATA LOW BYTE
Figure 57. AD5667R/AD5667 Input Shift Register (16-Bit DAC)
R
S
RESERVED
BYTE
SELECTION
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10
C2
C1
C0
COMMAND
COMMAND BYTE
A2
A1
A0
DAC ADDRESS
D13
D12
D11
D10
D9
D8
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
D7
D6
D5
D4
D3
D2
D1
D0
X
X
DAC DATA
DAC OR COMMAND DATA
DATA HIGH BYTE
DATA LOW BYTE
Figure 58. AD5647R Input Shift Register (14-Bit DAC)
Rev. PrA. | Page 23 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
R
S
RESERVED
BYTE
SELECTION
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10
C2
C1
C0
COMMAND
A2
A1
A0
D11
D10
D9
D8
DAC ADDRESS
COMMAND BYTE
D7
D6
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
D5
D4
D3
D2
D1
D0
X
X
X
X
DAC DATA
DAC OR COMMAND DATA
DATA HIGH BYTE
DATA LOW BYTE
Figure59. AD5627R/AD5627 Input Shift Register (12-Bit DAC)
WRITE COMMANDS AND LDAC
Table 9.
Command Definition
C2
0
0
0
C1
0
0
1
C0
0
1
0
0
1
1
1
1
1
0
0
1
1
1
0
1
0
1
Command
Write to input register n
Update DAC register n
Write to input register n, update all (software
LDAC)
Write to and update DAC channel n
Power up/power down
Reset
LDAC register setup
Internal reference setup (on/off )
Table 9 is the truth table for the command bits. The DAC or
DACs on which a command is performed is/are defined by n,
which is the DAC address shown in table 10. Some commands
required additional data which is defined in the low data byte.
Table 11. DAC Address Command
A2
0
0
1
A1
0
0
1
A0
0
1
1
ADDRESS (n)
DAC A
DAC B
Both DACs
commands and the LDAC pin operate and interact with each
other, in order to ensure that the desired result is obtained.
The first four commands are used for writing to and updating
the DACs.
Command 000 writes to input register n, without updating the
DAC registers, where n is the input register defined by the A2 --A0 bits in the command byte. Depending on the value of A2 --A0, this can be any one of the input registers or both input
registers, as defined b y the DAC address.
Command 001 does not write to the input registers, but
(depending on the value of A2 --- A0) updates a DAC register or
both DAC registers.
Command 010 writes to input register n, and updates both
DAC registers.
Command 011 writes to input register n and updates DAC
register n. Since n can be all DACs (A2 --- A0 = 111) commands
010 and 011 are equivalent if A2 --- A0 = 111.
LDAC SETUP
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 DACs
have double-buffered interfaces consisting of two banks of
registers: input registers and DAC registers. The input registers
are connected directly to the input shift register and the digital
code is transferred to the relevant input register on completion
of a valid write sequence. The DAC registers contain the digital
code used by the resistor strings.
The double-buffered interface is useful if the user requires
simultaneous updating of all DAC outputs. For example, the
user could write to three of the input registers individually and
then write to the remaining input register and, updating both
DAC registers, the outputs will update simultaneously.
The AD56x7 has a powerful set of commands for writing to and
updating the DACs. There is also has a hardware load DAC
(LDAC) pin. It is important to understand how these
In addition to the write commands, the LDAC setup command
(110) can also determine which DACs are updated at the end of
a write operation (this command does not update the DACs
when it is implemented). It also affects the operation of the
LDAC pin on the 14-pin device (see below). When this
command is sent to the device, data bits DB1 and DB0
determine which of DAC registers B and A are updated at the
end of write. If a bit is set to 1, the corresponding DAC is
updated. Note that, during the LDAC setup command, the
DAC address bits A2 – A0 are ignored. It is only DB1 and DB0
that determine which DAC will be updated.
As far as DAC updating is concerned, the write command and
the LDAC setup command are combined (OR’d together).
For example, if the LDAC setup command is set to update
DACs B, and command 011 is sent to write to and update DAC
A, then DAC A will be written to, but DACs A and B will be
updated.
Rev. PrA. | Page 24 of 30
Preliminary Technical Data
R
S
C2
C1
C0
A2
A1
A0
0
X
1
1
0
A2
A1
A0
RES
DON’T
CARE
AD5627R/AD5647R/AD5667R, AD5627/AD5667
DB15 DB14 DB13 DB12 DB11
X
X
X
X
DAC ADDRESS
(DON’T CARE)
COMMAND
X
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
X
X
X
X
X
X
X
X
X
DON’T CARE
DB1
DB0
DACB DACA
DON’T CARE
DAC SELECT
(0 = LDAC PIN ENABLED)
Figure 60. LDAC Setup Command
LDAC PIN
Updating of the DAC registers may also be controlled by the
LDAC pin. This can operate either synchronously or
asynchronously. Whenever LDAC is brought low, the DAC
registers are updated with the contents of the input registers. If
LDAC is held low, update takes place synchronously at the end
of every write operation.
Which DAC registers are updated when LDAC is brought low
is determined by the LDAC setup command. It is the inverse of
those registers that are set to update at the end of write. If one
of bits DB1 or DB0 is a 0, then the corresponding DAC is
updated when LDAC is taken low. If it is a 1, the DAC is
updated at the end of a write operation. This allows one DACs
to be updated automatically at the end of write, and the other to
be updated asynchronously using the LDAC pin.
If LDAC is permanently held low for synchronous update, then
both DACs will be updated irrespective of the DAC address in
the write command or the bit settings in the LDAC setup
command.
This is because the DAC whose bit is 0 in
LDAC setup will be updated due to the LDAC pin being low,
and the DACs whose bit is 1 will be updated due to the LDAC
setup command.
If DAC update is to be controlled solely by the write and LDAC
setup commands, the LDAC pin must be tied high (or use the
10-pin device which does not have this pin). If DAC update is
to be controlled solely by the LDAC pin, then use only
command 000 and set DB3 to DB0 to 0 in the LDAC setup
command.
These parts each contain an extra feature whereby a DAC
register is not updated unless its input register has been
updated since the last time LDAC was brought low. Normally,
when LDAC is brought low, the DAC registers are filled with
the contents of the input registers. In the case of the AD56X7,
the DAC register updates only if the input register has changed
since the last time the DAC register was updated, thereby
removing unnecessary digital crosstalk.
POWER-DOWN MODES
R
S
C2
C1
C0
A2
A1
A0
0
X
1
0
0
A2
A1
A0
DON’T
RES
CARE
COMMAND
DAC ADDRESS
(DON’T CARE)
DB15 DB14 DB13 DB12 DB11
X
X
X
X
X
DB10
DB9
DB8
DB7
DB6
X
X
X
X
X
DB5
PD1
DB4
DB3
DB2
PD0
X
X
DB1
DB0
DACB DACA
POWER
DON’T CARE
DON’T CARE
DOWN MODE
DON’T CARE
DAC SELECT
(1 = DAC SELECTED)
Figure 61. Power Up/down Command
Command 100 is the power up/down function. The parameters
of the power up/down function are programmed by bits DB5
and DB4. This defines the output state of the DAC amplifier, as
shown in Table 11. Bits DB3 to DB0 determine to which DAC
or DACs the power up/down command is applied. Setting the
one of these bits to 1 applies the power up/down state defined
by DB5 and DB4 to the corresponding DAC. If a bit is 0, the
state of the DAC is unchanged.
In power-down mode, the amplifier is disconnected from the
output pin, and the output pin is either open-circuit or
connected ground via a 10kΩ or 100kΩ resistor, depending on
the setting of DB5 and DB4.
Table 11. Modes of Operation for the
AD5627R/AD5647R/AD5667R, AD5627/AD5667
DB5
0
DB4
0
0
1
1
1
0
1
Rev. PrA. | Page 25 of 30
Operating Mode
Normal operation
Power-down modes
1 kΩ pulldown to GND
100 kΩ pulldown to GND
Three-state, high impedance
AD5627R/AD5647R/AD5667R, AD5627/AD5667
AMPLIFIER
There is also a software reset function. Command 101 is the
software reset command. The software reset command contains
two reset modes that are software programmable by setting bit
DB0 in the input shift register.
VOUT
POWER-DOWN
CIRCUITRY
RESISTOR
NETWORK
Table 12 shows how the state of the bit corresponds to the
software reset modes of operation of the devices. Figure 64
shows the contents of the input shift register during the
software reset mode of operation.
05856-038
RESISTOR
STRING DAC
Preliminary Technical Data
Figure 62. Output Stage During Power-Down
Table 12. Software Reset Modes for the
AD5627R/AD5647R/AD5667R, AD5627/AD5667
The bias generator, the output amplifier, the resistor string, and
other associated linear circuitry are shutdown when powerdown mode is activated. However, the contents of the DAC
register are unaffected when in power-down. The time to exit
power-down is typically 4 µs for VDD = 5 V and for VDD = 3 V.
Figure 61 shows the format of the power up/down command.
Note that, during the power up/down command, the DAC
address bits A2 – A0 are ignored.
DB0
0
Registers reset to zero
DAC register
Input shift register
DAC register
Input shift register
LDAC register
Power-down register
Internal reference setup register
1 (Power-On Reset)
POWER-ON-RESET AND SOFTWARE RESET
The AD56x7 contains a power-on reset circuit that controls the
output voltage during power-up. The device powers up to 0V
and the output remains powered up at this level until a valid
write sequence is made to the DAC. This is useful in
applications where it is important to know the state of the
output of the DAC while it is in the process of powering up.
Any events on LDAC or CLR during power-on reset are
ignored.
X
S
C2
C1
C0
A2
A1
A0
0
X
1
0
1
X
X
X
RES
DON’T
CARE
The AD56x7 has an asynchronous clear input. The CLR input is
falling edge sensitive. While CLR is low, all LDAC pulses are
ignored. When CLR is activated, zero scale is loaded to all input
and DAC registers. This clears the output to 0 V. The part exits
clear code mode on the 24th falling edge of the next write to the
part. If CLR is activated during a write sequence, the write is
aborted. If CLR is activated during high speed mode the part
will exit high speed mode to fast mode.
DB15 DB14 DB13 DB12 DB11 DB10
X
X
X
DAC ADDRESS
(DON’T CARE)
COMMAND
CLEAR PIN (CLR)
X
X
X
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
X
X
X
X
X
X
X
X
X
RST
RESET
MODE
DON’T CARE
DON’T CARE
Figure 63. Reset Command
INTERNAL REFERENCE SETUP (-R VERSIONS)
Table 14. Reference Setup Command
The on-chip reference is off at power-up by default. It can be
turned on by sending the reference setup command (111) and
setting DB0 in the input shift register. Table 14 shows how the
state of the bit corresponds to the mode of operation.
R
S
C2
C1
C0
A2
A1
A0
0
X
1
1
1
X
X
X
RES
DON’T
CARE
COMMAND
DAC ADDRESS
(DON’T CARE)
(DB0)
0
Internal reference off (default)
1
Internal reference on
DB15 DB14 DB13 DB12 DB11 DB10
X
X
X
X
X
Action
X
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
X
X
X
X
X
X
X
X
X
REF
DON’T CARE
Figure 64. Reference Setup Command
Rev. PrA. | Page 26 of 30
DON’T CARE
REF.
MODE
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
APPLICATIONS
USING A REFERENCE AS A POWER SUPPLY FOR
THE AD5627R/AD5647R/AD5667R,
AD5627/AD5667
Because the supply current required by the
AD5627R/AD5647R/AD5667R, AD5627/AD5667is extremely
low, an alternative option is to use a voltage reference to supply
the required voltage to the part (see Figure). This is especially
useful if the power supply is quite noisy, or if the system supply
voltages are at some value other than 5 V or 3 V, for example,
15 V. The voltage reference outputs a steady supply voltage for
the AD5627R/AD5647R/AD5667R, AD5627/AD5667. If the low
dropout REF195 is used, it must supply 450 µA of current to the
AD5627R/AD5647R/AD5667R, AD5627/AD5667 with no load
on the output of the DAC. When the DAC output is loaded, the
REF195 also needs to supply the current to the load. The total
current required (with a 5 kΩ load on the DAC output) is
This is an output voltage range of ±5 V, with 0x0000 corresponding to a −5 V output, and 0xFFFF corresponding to a
+5 V output.
R2 = 10kΩ
+5V
R1 = 10kΩ
+5V
10µF
AD820/
V OUT OP295
V DD
0.1µF
AD5627(R)/
AD5647R/
AD5667(R)
±5V
-5V
GND
SCL SDA
2-WIRE
SERIAL
INTERFACE
Figure 66. Bipolar Operation with the AD5627R/AD5647R/AD5667R,
AD5627/AD5667
POWER SUPPLY BYPASSING AND GROUNDING
450 µA + (5 V/5 kΩ) = 1.45 mA
The load regulation of the REF195 is typically 2 ppm/mA,
resulting in a 2.9 ppm (14.5 µV) error for the 1.45 mA current
drawn from it. This corresponds to a 0.191 LSB error.
15V
REF195
5V
V DD
2-WIRE SCL
SERIAL
INTERFACE SDA
AD5627(R)/
AD5647R/ V OUT = 0V TO 5V
AD5667(R)
GND
Figure 65. REF195 as Power Supply to the AD5627R/AD5647R/AD5667R,
AD5627/AD5667
BIPOLAR OPERATION USING THE
AD5627R/AD5647R/AD5667R, AD5627/AD5667
The AD5627R/AD5647R/AD5667R, AD5627/AD5667 has been
designed for single-supply operation, but a bipolar output range
is also possible using the circuit in Figure 67. The circuit gives
an output voltage range of ±5 V. Rail-to-rail operation at the
amplifier output is achievable using an AD820 or an OP295 as
the output amplifier.
The output voltage for any input code can be calculated as
follows:
⎡
⎛ D ⎞ ⎛ R1 + R2 ⎞
⎛ R2 ⎞ ⎤
VO = ⎢VDD × ⎜
⎟×⎜
⎟ − VDD × ⎜
⎟⎥
R1
65
,
536
⎝
⎠
⎝ R1 ⎠ ⎦
⎝
⎠
⎣
where D represents the input code in decimal (0 to 65535).
With VDD = 5 V, R1 = R2 = 10 kΩ,
⎛ 10 × D ⎞
VO = ⎜
⎟−5 V
⎝ 65,536 ⎠
When accuracy is important in a circuit, it is helpful to carefully
consider the power supply and ground return layout on the
board. The printed circuit board containing the
AD5627R/AD5647R/AD5667R, AD5627/AD5667 should have
separate analog and digital sections, each having its own area of
the board. If the AD5627R/AD5647R/AD5667R,
AD5627/AD5667 are in a system where other devices require an
AGND-to-DGND connection, the connection should be made at
one point only. This ground point should be as close as possible
to the AD5627R/AD5647R/AD5667R, AD5627/AD5667.
The power supply to the AD5627R/AD5647R/AD5667R,
AD5627/AD5667 should be bypassed with 10 µF and 0.1 µF
capacitors. The capacitors should be located as close as possible
to the device, with the 0.1 µF capacitor ideally right up against
the device. The 10 µF capacitor is the tantalum bead type. It is
important that the 0.1 µF capacitor have low effective series
resistance (ESR) and effective series inductance (ESI), for
example, common ceramic types of capacitors. This 0.1 µF
capacitor provides a low impedance path to ground for high
frequencies caused by transient currents due to internal logic
switching.
The power supply line itself should have as large a trace as
possible to provide a low impedance path and to reduce glitch
effects on the supply line. Clocks and other fast switching
digital signals should be shielded from other parts of the board
by digital ground. Avoid crossover of digital and analog signals
if possible. When traces cross on opposite sides of the board,
ensure that they run at right angles to each other to reduce
feedthrough effects through the board. The best board layout
technique is the microstrip technique where the component
side of the board is dedicated to the ground plane only and the
signal traces are placed on the solder side. However, this is not
always possible with a 2-layer board.
Rev. PrA. | Page 27 of 30
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Rev. PrA. | Page 28 of 30
Preliminary Technical Data
Preliminary Technical Data
AD5627R/AD5647R/AD5667R, AD5627/AD5667
OUTLINE DIMENSIONS
INDEX
AREA
PIN 1
INDICATOR
3.00
BSC SQ
10
1.50
BCS SQ
0.50
BSC
1
(BOTTOM VIEW)
6
0.80 MAX
0.55 TYP
0.80
0.75
0.70
5
0.50
0.40
0.30
1.74
1.64
1.49
0.05 MAX
0.02 NOM
SIDE VIEW
SEATING
PLANE
2.48
2.38
2.23
EXPOSED
PAD
TOP VIEW
0.30
0.23
0.18
0.20 REF
Figure 67. 10-Lead Lead Frame Chip Scale Package [LFCSP_WD]
3 mm x 3 mm Body, Very Very Thin, Dual Lead
(CP-10-9)
Dimensions shown in millimeters
3.10
3.00
2.90
10
3.10
3.00
2.90
1
6
5
5.15
4.90
4.65
PIN 1
0.50 BSC
0.95
0.85
0.75
0.15
0.05
1.10 MAX
0.33
0.17
SEATING
PLANE
0.23
0.08
8°
0°
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187-BA
Figure68. 10-Lead Mini Small Outline Package [MSOP]
(RM-10)
Dimensions shown in millimeters
Rev. PrA. | Page 29 of 30
0.80
0.60
0.40
AD5627R/AD5647R/AD5667R, AD5627/AD5667
Preliminary Technical Data
Model
AD5627BCPZ-250RL71
AD5627BCPZ-REEL71
AD5627BRMZ1
AD5627BRMZ-REEL71
AD5627RBCPZ-250RL71
AD5627RBCPZ-REEL71
AD5627RBRMZ-11
AD5627RBRMZ-1REEL71
AD5627RBRMZ-21
AD5627RBRMZ-2REEL71
AD5647RBCPZ-250RL71
AD5647RBCPZ-REEL71
AD5647RBRMZ1
AD5647RBRMZ-REEL71
AD5667BCPZ-250RL71
AD5667BCPZ-REEL71
AD5667BRMZ1
AD5667BRMZ-REEL71
AD5667RBCPZ-250RL71
AD5667RBCPZ-REEL71
AD5667RBRMZ-11
AD5667RBRMZ-1REEL71
AD5667-RBRMZ-21
AD5667RBRMZ-2REEL71
1
Temperature
Range
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
−40°C to +105°C
Accuracy
±1 LSB INL
±1 LSB INL
±1 LSB INL
±1 LSB INL
±1 LSB INL
±1 LSB INL
±1 LSB INL
±1 LSB INL
±1 LSB INL
±1 LSB INL
±4 LSB INL
±4 LSB INL
±4 LSB INL
±4 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
On-Chip
Reference
None
None
None
None
1.25 V
1.25 V
2.5 V
2.5 V
2.5 V
2.5 V
1.25 V
1.25 V
2.5 V
2.5 V
None
None
None
None
1.25 V
1.25 V
2.5 V
2.5 V
2.5 V
2.5 V
Max I2C
Speed
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
3.4 MHz
3.4 MHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
3.4 MHz
3.4 MHz
Z = Pb-free part.
Rev. PrA. | Page 30 of 30
Package
Description
10-Lead LFCSP_WD
10-Lead LFCSP_WD
10-Lead MSOP
10-Lead MSOP
10-Lead LFCSP_WD
10-Lead LFCSP_WD
10-Lead MSOP
10-Lead MSOP
10-Lead MSOP
10-Lead MSOP
10-Lead LFCSP_WD
10-Lead LFCSP_WD
10-Lead MSOP
10-Lead MSOP
10-Lead LFCSP_WD
10-Lead LFCSP_WD
10-Lead MSOP
10-Lead MSOP
10-Lead LFCSP_WD
10-Lead LFCSP_WD
10-Lead MSOP
10-Lead MSOP
10-Lead MSOP
10-Lead MSOP
Package
Option
CP-10 -9
CP-10-9
RM-10
RM-10
CP-10-9
CP-10-9
RM-10
RM-10
RM-10
RM-10
RU-14
RU-14
RM-10
RM-10
CP-10-9
CP-10-9
RM-10
RM-10
CP-10-9
CP-10-9
RM-10
RM-10
RM-10
RM-10
Branding
DA1
DA1
DA1
DA1
D9J
D9J
DA1
DA1
DA1
DA1
D9G
D9G
D9G
D9G
D9Z
D9Z
D9Z
D9Z
D8X
D8X
DA5
DA5
DA5
DA5
PR06342-0-8/06(PrA)
ORDERING GUIDE

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