AD5686R-EP Data Sheet

FEATURES
FUNCTIONAL BLOCK DIAGRAM
VDD
GND
VREF
AD5686R-EP
VLOGIC
INPUT
REGISTER
2.5V
REFERENCE
DAC
REGISTER
STRING
DAC A
SCLK
SYNC
SDIN
SDO
VOUTA
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
VOUTB
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC C
VOUTC
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC D
VOUTD
BUFFER
LDAC RESET
POWER-ON
RESET
GAIN
×1/×2
RSTSEL
GAIN
POWERDOWN
LOGIC
12975-001
High relative accuracy (INL): ±4 LSB maximum at 16 bits
Low drift 2.5 V reference: 4 ppm/°C typical
Tiny package: 3 mm × 3 mm, 16-lead LFCSP
Total unadjusted error (TUE): ±0.1% of FSR maximum
Offset error: ±1.5 mV maximum
Gain error: ±0.1% of FSR maximum
High drive capability: 15 mA, 0.5 V from supply rails
User selectable gain of 1 or 2 (GAIN pin)
Reset to zero scale or midscale (RSTSEL pin)
1.8 V logic compatibility
50 MHz SPI with readback or daisy chain
Low glitch: 0.5 nV-sec
Robust 4 kV HBM and 1.5 kV FICDM ESD ratings
Low power: 3.3 mW at 3 V
2.7 V to 5.5 V power supply
INTERFACE LOGIC
Enhanced Product
Quad, 16-Bit nanoDAC+
with 4 ppm/°C Reference, SPI Interface
AD5686R-EP
Figure 1.
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC)
Temperature range: −55°C to +125°C
Controlled manufacturing baseline
1 assembly/test site
1 fabrication site
Enhanced product change notification
Qualification data available on request
APPLICATIONS
Optical transceivers
Base-station power amplifiers
Process control (PLC input/output cards)
Industrial automation
Data acquisition systems
GENERAL DESCRIPTION
The AD5686R-EP, a member of the nanoDAC+® family, is a low
power, quad, 16-bit buffered voltage output digital-to-analog
converter (DAC). The device includes a 2.5 V, 4 ppm/°C internal
reference (enabled by default) and a gain select pin giving a fullscale output of 2.5 V (gain = 1) or 5 V (gain = 2). The device
operates from a single 2.7 V to 5.5 V supply, is guaranteed
monotonic by design, and exhibits less than 0.1% FSR gain error
and 1.5 mV offset error performance. The device is available in
a 3 mm × 3 mm LFCSP package.
The AD5686R-EP also incorporates a power-on reset circuit and a
RSTSEL pin that ensures that the DAC outputs power up to zero
scale or midscale and remains there until a valid write occurs.
The device contains a per-channel power-down feature that
Rev. 0
reduces the current consumption of the device to 4 µA at 3 V
while in power-down mode.
The AD5686R-EP employs a versatile serial peripheral interface
(SPI) that operates at clock rates up to 50 MHz, and contains a
VLOGIC pin that is intended for 1.8 V/3 V/5 V logic.
Additional application and technical information can be found
in the AD5686R/AD5685R/AD5684R data sheet.
PRODUCT HIGHLIGHTS
1.
2.
High Relative Accuracy (INL).
±4 LSB maximum
Low Drift 2.5 V On-Chip Reference.
4 ppm/°C typical temperature coefficient
13 ppm/°C maximum temperature coefficient
Document Feedback
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
©2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
AD5686R-EP
Enhanced Product
TABLE OF CONTENTS
Features .............................................................................................. 1
Timing Characteristics .................................................................6
Enhanced Product Features ............................................................ 1
Daisy-Chain and Readback Timing Characteristics ................7
Applications ....................................................................................... 1
Absolute Maximum Ratings ............................................................9
Functional Block Diagram .............................................................. 1
ESD Caution...................................................................................9
General Description ......................................................................... 1
Pin Configuration and Function Descriptions........................... 10
Product Highlights ........................................................................... 1
Typical Performance Characteristics ........................................... 11
Revision History ............................................................................... 2
Outline Dimensions ....................................................................... 17
Specifications..................................................................................... 3
Ordering Guide .......................................................................... 17
AC Characteristics........................................................................ 5
REVISION HISTORY
7/15—Revision 0: Initial Version
Rev. 0 | Page 2 of 17
Enhanced Product
AD5686R-EP
SPECIFICATIONS
VDD = 2.7 V to 5.5 V; 1.8 V ≤ VLOGIC ≤ 5.5 V; all specifications TMIN to TMAX, unless otherwise noted. RL = 2 kΩ; CL = 200 pF.
Table 1.
Parameter
STATIC PERFORMANCE 1
Resolution
Relative Accuracy
Min
Offset Error Drift 2
Gain Temperature Coefficient (TC)2
DC Power Supply Rejection Ratio2
DC Crosstalk2
LOGIC INPUTS2
Input Current
Input Voltage
Low (VINL)
High (VINH)
Pin Capacitance
±4
±5
±1
1.5
±1.5
±0.1
±0.1
±0.15
±0.1
±0.2
Unit
Test Conditions/Comments
±1
±1
0.15
Bits
LSB
LSB
LSB
mV
mV
% of FSR
% of FSR
% of FSR
% of FSR
% of FSR
µV/°C
ppm
mV/V
±2
±3
±2
µV
µV/mA
µV
Due to single channel, full-scale output change
Due to load current change
Due to powering down (per channel)
V
V
nF
nF
kΩ
µV/mA
µV/mA
mA
Ω
µs
Gain = 1
Gain = 2, see Figure 27
RL = ∞
RL = 1 kΩ
V
ppm/°C
Ω
µV p-p
nV/√Hz
µV/mA
µV/mA
mA
µV/V
ppm
ppm
At ambient
0.1 Hz to 10 Hz
At ambient; f = 10 kHz, CL = 10 nF
At ambient
At ambient
VDD ≥ 3 V
At ambient
First cycle
Additional cycles
±2
µA
Per pin
0.3 × VLOGIC
V
V
pF
0
0
Capacitive Load Stability
Short-Circuit Current 4
Load Impedance at Rails 5
Power-Up Time
REFERENCE OUTPUT
Output Voltage 6
Reference TC 7, 8
Output Impedance2
Output Voltage Noise2
Output Voltage Noise Density2
Load Regulation Sourcing2
Load Regulation Sinking2
Output Current Load Capability2
Line Regulation2
Thermal Hysteresis2
±1
±1
0.4
+0.1
+0.01
±0.02
±0.02
±0.01
Total Unadjusted Error
Resistive Load 3
Load Regulation
Max
16
Differential Nonlinearity (DNL)
Zero-Code Error
Offset Error
Full-Scale Error
Gain Error
OUTPUT CHARACTERISTICS2
Output Voltage Range
Typ
VREF
2 × VREF
2
10
1
80
80
40
25
2.5
2.4975
4
0.04
12
240
20
40
±5
100
125
25
0.7 × VLOGIC
2
2.5025
13
Rev. 0 | Page 3 of 17
Gain = 2
Gain = 1
Guaranteed monotonic by design
All zeros loaded to DAC register
All ones loaded to DAC register
Gain = 2
Gain = 1
External reference; gain = 2
Internal reference; gain = 1
Of FSR/°C
DAC code = midscale; VDD = 5 V ± 10%
5 V ± 10%, DAC code = midscale; −30 mA ≤ IOUT ≤ 30 mA
3 V ± 10%, DAC code = midscale; −20 mA ≤ IOUT ≤ 20 mA
See Figure 27
Coming out of power-down mode; VDD = 5 V
AD5686R-EP
Parameter
LOGIC OUTPUTS (SDO)2
Output Voltage
Low (VOL)
High (VOH)
Floating State Output
Capacitance
POWER REQUIREMENTS
VLOGIC
ILOGIC
VDD
VDD
IDD
Normal Mode 9
All Power-Down Modes 10
Enhanced Product
Min
Typ
Max
Unit
Test Conditions/Comments
0.4
V
V
pF
ISINK = 200 μA
ISOURCE = 200 μA
5.5
3
5.5
5.5
V
µA
V
V
0.7
1.3
4
6
mA
mA
µA
µA
VLOGIC − 0.4
4
1.8
2.7
VREF + 1.5
0.59
1.1
1
Gain = 1
Gain = 2
VIH = VDD, VIL = GND, VDD = 2.7 V to 5.5 V
Internal reference off
Internal reference on, at full scale
−40°C to +85°C
−55°C to +125°C
DC specifications tested with the outputs unloaded, unless otherwise noted. Upper dead band = 10 mV and exists only when VREF = VDD with gain = 1 or when VREF/2 =
VDD with gain = 2. Linearity calculated using a reduced code range of 256 to 65,280.
Guaranteed by design and characterization; not production tested.
3
Channel A and Channel B can have a combined output current of up to 15 mA. Similarly, Channel C and Channel D can have a combined output current of up to
15 mA up to a junction temperature of 135°C.
4
VDD = 5 V. The device includes current limiting that is intended to protect the device during temporary overload conditions. Junction temperature can be exceeded
during current limit. Operation above the specified maximum operation junction temperature may impair device reliability.
5
When drawing a load current at either rail, the output voltage headroom, with respect to that rail, is limited by the 25 Ω typical channel resistance of the output
device. For example, when sinking 1 mA, the minimum output voltage = 25 Ω × 1 mA = 25 mV (see Figure 27).
6
Initial accuracy presolder reflow is ±750 µV; output voltage includes the effects of preconditioning drift. See the AD5686R/AD5685R/AD5684R data sheet for more
information.
7
Reference is trimmed and tested at two temperatures and is characterized from −55°C to +125°C.
8
Reference temperature coefficient calculated as per the box method. See the AD5686R/AD5685R/AD5684R data sheet for further information.
9
Interface inactive. All DACs active. DAC outputs unloaded.
10
All DACs powered down.
1
2
Rev. 0 | Page 4 of 17
Enhanced Product
AD5686R-EP
AC CHARACTERISTICS
VDD = 2.7 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; 1.8 V ≤ VLOGIC ≤ 5.5 V; all specifications TMIN to TMAX, unless otherwise noted. 1
Table 2.
Parameter 2
Output Voltage Settling Time
Slew Rate
Digital-to-Analog Glitch Impulse
Digital Feedthrough
Digital Crosstalk
Analog Crosstalk
DAC-to-DAC Crosstalk
Total Harmonic Distortion (THD) 4
Output Noise Spectral Density (NSD)
Output Noise
Signal-to-Noise Ratio (SNR)
Spurious Free Dynamic Range (SFDR)
Signal-to-Noise-and-Distortion Ratio (SINAD)
Min
Typ
5
0.8
0.5
0.13
0.1
0.2
0.3
−80
300
6
90
83
80
Max
8
Unit
µs
V/µs
nV-sec
nV-sec
nV-sec
nV-sec
nV-sec
dB
nV/√Hz
µV p-p
dB
dB
dB
Guaranteed by design and characterization, not production tested.
See the AD5686R/AD5685R/AD5684R data sheet.
3
Temperature range is −55°C to +125°C, typical at 25°C.
4
Digitally generated sine wave at 1 kHz.
1
2
Rev. 0 | Page 5 of 17
Test Conditions/Comments 3
¼ to ¾ scale settling to ±2 LSB
1 LSB change around major carry
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
DAC code = midscale, 10 kHz; gain = 2
0.1 Hz to 10 Hz
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
AD5686R-EP
Enhanced Product
TIMING CHARACTERISTICS
All input signals are specified with tR = tF = 1 ns/V (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2. See Figure 2.
VDD = 2.7 V to 5.5 V, 1.8 V ≤ VLOGIC ≤ 5.5 V; VREF = 2.5 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 3.
Parameter1
SCLK Cycle Time
SCLK High Time
SCLK Low Time
SYNC to SCLK Falling Edge Setup Time
Data Setup Time
Data Hold Time
SCLK Falling Edge to SYNC Rising Edge
Minimum SYNC High Time
SYNC Rising Edge to SYNC Rising Edge (DAC Register Update/s)
SYNC Falling Edge to SCLK Fall Ignore
LDAC Pulse Width Low
SYNC Rising Edge to LDAC Rising Edge
SYNC Rising Edge to LDAC Falling Edge
LDAC Falling Edge to SYNC Rising Edge
Minimum Pulse Width Low
Pulse Activation Time
Power-Up Time2
2
2.7 V ≤ VLOGIC ≤ 5.5 V
Min
Max
20
10
10
10
5
5
10
20
1.8
10
15
20
30
1.5
30
30
4.5
Maximum SCLK frequency is 50 MHz at VDD = 2.7 V to 5.5 V, 1.8 V ≤ VLOGIC ≤ VDD. Guaranteed by design and characterization; not production tested.
Time to exit power-down to normal mode of AD5686R-EP operation, 32nd clock edge to 90% of DAC midscale value, with output unloaded.
t10
t1
SCLK
t8
t3
t4
t2
t7
t14
SYNC
t5
SDIN
t6
DB23
t9
DB0
t11
t13
LDAC1
t12
LDAC2
RESET
VOUT
t15
t16
12975-002
1
1.8 V ≤ VLOGIC < 2.7 V
Min
Max
33
16
16
15
5
5
15
20
2.2
16
25
50
30
1.9
30
30
4.5
Symbol
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
t13
t14
t15
t16
1ASYNCHRONOUS LDAC UPDATE MODE.
2SYNCHRONOUS LDAC UPDATE MODE.
Figure 2. Serial Write Operation
Rev. 0 | Page 6 of 17
Unit
ns
ns
ns
ns
ns
ns
ns
ns
μs
ns
ns
ns
ns
μs
ns
ns
μs
Enhanced Product
AD5686R-EP
DAISY-CHAIN AND READBACK TIMING CHARACTERISTICS
All input signals are specified with tR = tF = 1 ns/V (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2. See Figure 4
and Figure 5. VDD = 2.7 V to 5.5 V, 1.8 V ≤ VLOGIC ≤ 5.5 V; VREF = 2.5 V. All specifications TMIN to TMAX, unless otherwise noted. VDD =
2.7 V to 5.5 V.
Table 4.
1.8 V ≤ VLOGIC < 2.7 V
Max
Symbol
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
Min
66
33
33
33
5
5
15
60
60
15
10
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
SYNC Rising Edge to SCLK Rising Edge
t12
15
10
ns
1
Min
40
20
20
20
5
5
10
30
30
2.7 V ≤ VLOGIC ≤ 5.5 V
Max
Parameter 1
SCLK Cycle Time
SCLK High Time
SCLK Low Time
SYNC to SCLK Falling Edge
Data Setup Time
Data Hold Time
SCLK Falling Edge to SYNC Rising Edge
Minimum SYNC High Time
Minimum SYNC High Time
SDO Data Valid from SCLK Rising Edge
SCLK Falling Edge to SYNC Rising Edge
40
29
Maximum SCLK frequency is 25 MHz or 15 MHz at VDD = 2.7 V to 5.5 V, 1.8 V ≤ VLOGIC ≤ VDD. Guaranteed by design and characterization; not production tested.
Circuit and Timing Diagrams
200µA
VOH (MIN)
CL
20pF
200µA
12975-003
TO OUTPUT
PIN
IOL
IOH
Figure 3. Load Circuit for Digital Output (SDO) Timing Specifications
SCLK
24
48
t11
t8
t12
t4
SYNC
SDIN
t6
DB23
DB0
INPUT WORD FOR DAC N
DB23
DB0
t10
INPUT WORD FOR DAC N + 1
DB23
SDO
UNDEFINED
DB0
INPUT WORD FOR DAC N
Figure 4. Daisy-Chain Timing Diagram
Rev. 0 | Page 7 of 17
10797-004
t5
AD5686R-EP
Enhanced Product
t1
SCLK
24
1
t8
t4
t3
24
1
t7
t2
t9
SYNC
t6
t5
DB23
DB0
DB23
INPUT WORD SPECIFIES
REGISTER TO BE READ
SDO
DB23
DB0
NOP CONDITION
t10
DB0
DB23
UNDEFINED
DB0
SELECTED REGISTER DATA
CLOCKED OUT
Figure 5. Readback Timing Diagram
Rev. 0 | Page 8 of 17
10797-005
SDIN
Enhanced Product
AD5686R-EP
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 5.
Parameter
VDD to GND
VLOGIC to GND
VOUT to GND
VREF to GND
Digital Input Voltage to GND
Operating Temperature Range
Storage Temperature Range
Junction Temperature
16-Lead LFCSP, θJA Thermal
Impedance, 0 Airflow (4-Layer Board)
Reflow Soldering Peak
Temperature, Pb Free (J-STD-020)
ESD 1
FICDM
1
Rating
−0.3 V to +7 V
−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 VLOGIC + 0.3 V
−55°C to +125°C
−65°C to +150°C
135°C
70°C/W
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ESD CAUTION
260°C
4 kV
1.5 kV
Human body model (HBM) classification.
Rev. 0 | Page 9 of 17
AD5686R-EP
Enhanced Product
13 RESET
14 RSTSEL
16 VOUTB
15 VREF
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VOUTA 1
GND 2
VDD 3
12 SDIN
AD5686R-EP
11 SYNC
10 SCLK
9 VLOGIC
GAIN 8
LDAC 7
SDO 6
VOUTD 5
VOUTC 4
NOTES
1. THE EXPOSED PAD MUST BE TIED TO GND.
12975-006
TOP VIEW
(Not to Scale)
Figure 6. 16-Lead LFCSP Pin Configuration
Table 6. Pin Function Descriptions
Pin No.
1
2
3
Mnemonic
VOUTA
GND
VDD
4
5
6
VOUTC
VOUTD
SDO
7
LDAC
8
GAIN
9
10
VLOGIC
SCLK
11
SYNC
12
SDIN
13
RESET
14
RSTSEL
15
VREF
16
17
VOUTB
EPAD
Description
Analog Output Voltage from DAC A. The output amplifier has rail-to-rail operation.
Ground Reference Point for All Circuitry on the Device.
Power Supply Input. The AD5686R-EP can be operated from 2.7 V to 5.5 V, and the supply must be decoupled
with a 10 µF capacitor in parallel with a 0.1 µF capacitor to GND.
Analog Output Voltage from DAC C. The output amplifier has rail-to-rail operation.
Analog Output Voltage from DAC D. The output amplifier has rail-to-rail operation.
Serial Data Output. SDO can be used to daisy-chain a number of AD5686R-EP devices together, or it can be used for
readback. The serial data is transferred on the rising edge of SCLK and is valid on the falling edge of the clock.
LDAC can be operated in two modes, asynchronously and synchronously. Pulsing this pin low allows any or all
DAC registers to be updated if the input registers have new data. This allows all DAC outputs to update
simultaneously. This pin can also be tied permanently low.
Span Set Pin. When this pin is tied to GND, all four DAC outputs have a span from 0 V to VREF. If this pin is tied to
VLOGIC, all four DACs output a span of 0 V to 2 × VREF.
Digital Power Supply. Voltage ranges from 1.8 V to 5.5 V.
Serial Clock Input. Data is clocked into the input shift register on the falling edge of the serial clock input. Data
can be transferred at rates of up to 50 MHz.
Active Low Control Input. This is the frame synchronization signal for the input data. When SYNC goes low,
data is transferred in on the falling edges of the next 24 clocks.
Serial Data Input. This device has a 24-bit input shift register. Data is clocked into the register on the falling
edge of the serial clock input.
Asynchronous Reset Input. The RESET input is falling edge sensitive. When RESET is low, all LDAC pulses are
ignored. When RESET is activated, the input register and the DAC register are updated with zero scale or midscale,
depending on the state of the RSTSEL pin.
Power-On Reset Pin. Tying this pin to GND powers up all four DACs to zero scale. Tying this pin to VLOGIC powers
up all four DACs to midscale.
Reference Voltage. The AD5686R-EP has a common reference pin. 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 output.
Analog Output Voltage from DAC B. The output amplifier has rail-to-rail operation.
Exposed Pad. The exposed pad must be tied to GND.
Rev. 0 | Page 10 of 17
Enhanced Product
AD5686R-EP
TYPICAL PERFORMANCE CHARACTERISTICS
2.5020
VDD = 5V
DEVICE 1
DEVICE 2
DEVICE 3
DEVICE 4
DEVICE 5
2.5015
2.5010
VDD = 5V
TA = 25°C
T
VREF (V)
2.5005
2.5000
1
2.4995
2.4990
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
CH1 2µV
M1.0s
A CH1
160mV
12975-112
2.4980
–40
12975-212
2.4985
Figure 10. Internal Reference Noise, 0.1 Hz to 10 Hz
Figure 7. Internal Reference Voltage (VREF) vs. Temperature
2.5000
90
VDD = 5V
VDD = 5V
TA = 25°C
80
2.4999
70
VREF (V)
NUMBER OF UNITS
2.4998
60
50
40
30
2.4997
2.4996
2.4995
20
2.4994
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
TEMPERATURE DRIFT (ppm/°C)
2.4993
–0.005
12975-250
0
0.001
–0.001
0.003
0.005
ILOAD (A)
Figure 11. VREF vs. Load Current (ILOAD)
Figure 8. Reference Output Temperature Drift Histogram
1600
–0.003
12975-113
10
2.5002
TA = 25°C
VDD = 5V
TA = 25°C
D1
1400
2.5000
1200
VREF (V)
NSD (nV/ Hz)
2.4998
1000
800
600
D3
2.4996
2.4994
400
2.4992
100
1k
10k
FREQUENCY (MHz)
100k
1M
12975-111
0
10
Figure 9. Internal Reference Noise Spectral Density (NSD) vs. Frequency
Rev. 0 | Page 11 of 17
2.4990
2.5
3.0
3.5
4.0
4.5
5.0
VDD (V)
Figure 12. VREF vs. Supply Voltage (VDD)
5.5
12975-117
D2
200
Enhanced Product
10
10
8
8
6
6
4
4
ERROR (LSB)
2
0
–2
2
INL
0
DNL
–2
–4
–4
–6
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
–10
0
10000
20000
30000
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
–8
40000
50000
60000
CODE
–10
12975-118
–8
0
0.5
1.0
10
0.8
8
0.6
6
0.4
4
ERROR (LSB)
2.5
3.0
3.5
4.0
4.5
5.0
0.2
0
–0.2
2
INL
0
DNL
–2
–4
–6
–0.6
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
–1.0
0
10000
20000
30000
–8
40000
50000
60000
CODE
3.2
3.7
4.2
4.7
5.2
SUPPLY VOLTAGE (V)
Figure 17. INL Error and DNL Error vs. Supply Voltage
Figure 14. Differential Nonlinearity (DNL) vs. Code
0.10
8
0.08
6
0.06
4
0.04
ERROR (% of FSR)
10
2
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
–10
2.7
12975-121
–0.8
12975-126
DNL (LSB)
2.0
Figure 16. INL Error and DNL Error vs. VREF
–0.4
INL
0
DNL
–2
–4
0.02
0
FULL-SCALE ERROR
GAIN ERROR
–0.02
–0.04
–0.06
–6
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
–10
–40
10
60
110
TEMPERATURE (°C)
12975-124
ERROR (LSB)
1.5
VREF (V)
Figure 13. Integral Nonlinearity (INL) vs. Code
–8
1.0
12975-125
–6
VDD = 5V
–0.08 T = 25°C
A
INTERNAL REFERENCE = 2.5V
–0.10
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
Figure 18. Gain Error and Full-Scale Error vs. Temperature
Figure 15. INL Error and DNL Error vs. Temperature
Rev. 0 | Page 12 of 17
12975-127
INL (LSB)
AD5686R-EP
Enhanced Product
AD5686R-EP
0.10
1.2
0.8
0.6
ZERO-CODE ERROR
0.2
0
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
0.05
0.04
0.03
0.02
0.01
0
–40
12975-128
OFFSET ERROR
0.06
0.08
0.08
TOTAL UNADJUSTED ERROR (% of FSR)
0.10
ERROR (% of FSR)
0.06
0.04
0.02
GAIN ERROR
0
FULL-SCALE ERROR
–0.04
4.7
5.2
12975-129
–0.06
SUPPLY VOLTAGE (V)
60
80
100
120
0.04
0.02
0
–0.02
–0.04
–0.06
VDD = 5V
–0.08 T = 25°C
A
INTERNAL REFERENCE = 2.5V
–0.10
2.7
3.2
3.7
4.2
4.7
5.2
SUPPLY VOLTAGE (V)
Figure 23. TUE vs. Supply, Gain = 1
0
TOTAL UNADJUSTED ERROR (% of FSR)
1.5
1.0
0.5
ZERO-CODE ERROR
0
OFFSET ERROR
–0.5
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
–1.5
2.7
3.2
3.7
4.2
4.7
5.2
SUPPLY VOLTAGE (V)
12975-130
ERROR (mV)
40
0.06
Figure 20. Gain Error and Full-Scale Error vs. Supply
–1.0
20
Figure 22. TUE vs. Temperature
0.10
VDD = 5V
–0.08 T = 25°C
A
INTERNAL REFERENCE = 2.5V
–0.10
2.7
3.2
3.7
4.2
0
TEMPERATURE (°C)
Figure 19. Zero-Code Error and Offset Error vs. Temperature
–0.02
–20
12975-132
0.4
0.07
–0.01
–0.02
–0.03
–0.04
–0.05
–0.06
–0.07
–0.08
VDD = 5V
–0.09 T = 25°C
A
INTERNAL REFERENCE = 2.5V
–0.10
0
10000
20000
30000
40000
CODE
Figure 24. TUE vs. Code
Figure 21. Zero-Code Error and Offset Error vs. Supply
Rev. 0 | Page 13 of 17
50000
60000 65535
12975-133
ERROR (mV)
1.0
VDD = 5V
0.09 TA = 25°C
INTERNAL REFERENCE = 2.5V
0.08
12975-131
TOTAL UNADJUSTED ERROR (% of FSR)
VDD = 5V
1.4 T = 25°C
A
INTERNAL REFERENCE = 2.5V
AD5686R-EP
Enhanced Product
7
VDD = 5V
TA = 25°C
EXTERNAL
REFERENCE = 2.5V
25
VDD = 5V
6 TA = 25°C
GAIN = 2
INTERNAL
5 REFERENCE = 2.5V
20
0xFFFF
15
VOUT (V)
HITS
4
10
0xC000
3
0x8000
2
0x4000
1
0x0000
0
5
560
580
600
620
640
IDD (V)
–2
–0.06
12975-135
540
–0.04
–0.02
Figure 25. IDD Histogram with External Reference, 5 V
0.02
0.04
0.06
Figure 28. Source and Sink Capability at 5 V
5
VDD = 5V
30 T = 25°C
A
INTERNAL
REFERENCE = 2.5V
25
VDD = 3V
TA = 25°C
4 EXTERNAL REFERENCE = 2.5V
GAIN = 1
0xFFFF
3
0xC000
VOUT (V)
20
HITS
0
LOAD CURRENT (A)
12975-138
–1
0
15
2
0x8000
1
0x4000
10
0
5
0x0000
1000
1020
1040
1060
1080
1100
1120
1140
IDD FULLSCALE (V)
–2
–0.06
12975-136
0
–0.04
–0.02
0
0.02
0.04
0.06
LOAD CURRENT (A)
12975-139
–1
Figure 29. Source and Sink Capability at 3 V
Figure 26. IDD Histogram with Internal Reference, VREFOUT = 2.5 V, Gain = 2
1.0
1.4
0.8
0.6
1.2
0.4
CURRENT (mA)
SINKING 5V
0
–0.2
SOURCING 5V
–0.4
1.0
ZERO CODE
0.8
0.6
EXTERNAL REFERENCE, FULL-SCALE
0.4
–0.6
SOURCING 2.7V
0.2
–1.0
0
5
10
15
20
25
LOAD CURRENT (mA)
30
0
–40
10
60
TEMPERATURE (°C)
Figure 30. Supply Current vs. Temperature
Figure 27. Headroom/Footroom vs. Load Current
Rev. 0 | Page 14 of 17
110
12975-140
–0.8
12975-200
∆VOUT (V)
SINKING 2.7V
0.2
FULL SCALE
Enhanced Product
AD5686R-EP
2.5008
4.0
3.5
DAC A
DAC B
DAC C
DAC D
2.5003
3.0
VOUT (V)
VOUT (V)
2.5
2.0
2.4998
1.5
80
160
2.4988
12975-141
VDD = 5V
0.5 TA = 25°C
INTERNAL REFERENCE = 2.5V
¼ TO ¾ SCALE
0
20
10
40
320
TIME (µs)
0
12
10
Figure 34. Digital-to-Analog Glitch Impulse
6
0.06
CH A
CH B
CH C
CH D
VDD
0.003
CH B
CH C
CH D
5
0.03
3
0.02
2
0.01
1
0
0
VDD (V)
4
VOUT AC-COUPLED (V)
0.002
0.04
0.001
0
–0.001
–1
15
10
–0.002
TIME (µs)
0
5
10
15
20
12975-145
5
12975-142
TA = 25°C
INTERNAL REFERENCE = 2.5V
–0.01
–5
0
–10
25
TIME (µs)
Figure 32. Power-On Reset to 0 V
Figure 35. Analog Crosstalk, Channel A
3
CH A
CH B
CH C
CH D
SYNC
T
GAIN = 2
2
VOUT (V)
GAIN = 1
1
0
–5
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
0
5
TIME (µs)
10
Figure 33. Exiting Power-Down to Midscale
VDD = 5V
TA = 25°C
EXTERNAL REFERENCE = 2.5V
CH1 10µV
M1.0s
A CH1
802mV
Figure 36. 0.1 Hz to 10 Hz Output Noise Plot, External Reference
Rev. 0 | Page 15 of 17
12975-146
1
12975-143
VOUT (V)
8
6
TIME (µs)
Figure 31. Settling Time, 5.25 V
0.05
4
2
12975-144
CHANNEL B
TA = 25°C
VDD = 5.25V
INTERNAL REFERENCE
CODE = 7FFF TO 8000
ENERGY = 0.227206nV-sec
2.4993
1.0
AD5686R-EP
Enhanced Product
4.0
T
0nF
0.1nF
10nF
0.22nF
4.7nF
3.9
3.8
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
VOUT (V)
3.7
1
3.6
3.5
3.4
3.3
3.2
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
A CH1
802mV
1.595
1.600
1.605
1.610
1.615
1.620
1.625
1.630
TIME (ms)
Figure 37. 0.1 Hz to 10 Hz Output Noise Plot, 2.5 V Internal Reference
12975-150
M1.0s
3.0
1.590
12975-147
CH1 10µV
3.1
Figure 40. Settling Time for Various Capacitive Loads
1600
0
VDD = 5V
TA = 25°C
1400 INTERNAL REFERENCE = 2.5V
FULL-SCALE
MIDSCALE
ZERO-SCALE
–10
BANDWIDTH (dB)
NSD (nV/ Hz)
1200
1000
800
600
–20
–30
–40
400
100
1k
10k
100k
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
0
–20
–60
–80
–100
–120
–140
–160
0
2000 4000 6000 8000 10000 12000 14000 16000 18000 20000
FREQUENCY (Hz)
12975-149
THD (dBV)
–40
–180
100k
1M
10M
Figure 41. Multiplying Bandwidth, External Reference = 2.5 V, ±0.1 V p-p,
10 kHz to 10 MHz
Figure 38. Noise Spectral Density (NSD)
20
–60
10k
12975-148
0
10
VDD = 5V
TA = 25°C
EXTERNAL REFERENCE = 2.5V, ±0.1V p-p
12975-151
–50
200
Figure 39. Total Harmonic Distortion at 1 kHz
Rev. 0 | Page 16 of 17
Enhanced Product
AD5686R-EP
OUTLINE DIMENSIONS
0.30
0.23
0.18
0.50
BSC
13
PIN 1
INDICATOR
16
1
12
EXPOSED
PAD
1.75
1.60 SQ
1.45
9
TOP VIEW
0.80
0.75
0.70
0.50
0.40
0.30
4
8
0.25 MIN
BOTTOM VIEW
0.05 MAX
0.02 NOM
COPLANARITY
0.08
0.20 REF
SEATING
PLANE
5
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
SECTION OF THIS DATA SHEET.
COMPLIANT TO JEDEC STANDARDS MO-220-WEED-6.
08-16-2010-E
PIN 1
INDICATOR
3.10
3.00 SQ
2.90
Figure 42. 16-Lead Lead Frame Chip Scale Package [LFCSP_WQ]
3 mm × 3 mm Body, Very Very Thin Quad
(CP-16-22)
Dimensions shown in millimeters
ORDERING GUIDE
Model 1
AD5686RTCPZ-EP-RL7
1
Resolution
16 Bits
Temperature Range
−55°C to +125°C
Package Description
16-Lead LFCSP_WQ
Z = RoHS Compliant Part.
©2015 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D12975-0-7/15(0)
Rev. 0 | Page 17 of 17
Package Option
CP-16-22
Branding
DNG
Similar pages