768A – DAC, 16 Bit, 30 MSPS

768A
16-BIT, 30 MSPS
DIGITAL-TO-ANALOG CONVERTER
768A
Memory
Functional Block Diagram
FEATURES:
DESCRIPTION:
• Total dose hardness:
> 100 krad (Si), depending upon space mission
Excellent Single Event Effects
- Immune to SEL LET > 83MeV-cm2/mg at 125C
• 30 MSPS Update Rate
• 16-Bit Resolution
• Linearity: 1/2 LSB DNL at 14 Bits
1/2 LSB INL at 14 Bits
• Fast Settling: 25ns Full-scale Settling to 0.025%
• SFDR at 1 MHz Output: 86 dBc
• THD at 1 MHZ Output: 71 dBc
• Low Glitch Impulse: 35 pV-s
• Power Dissipation: 465 mW
• On-chip Reference: 2.5 V
Maxwell Technologies’ 768A 16-Bit DAC microcircuit features a greater than 100 krad (Si) total dose
tolerance, depending upon space mission.
The 768A is manufactured on an Advance Bipolar
process, combining the speed of bipolar transistors, the accuracy of laser-trimmable thin film resistors, and the efficencyof CMOS logic.
This product is available with screening up to Maxwell Technologies’ Self-Defined Class S.
09.25.14 Rev 1
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
All data sheets are subject to change without notice
1
©2014 Maxwell Technologies
All rights reserved.
768A
16-BIT, 30 MSPS DIGITAL-TO-ANALOG Converter
TABLE 1. PINOUT DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1
IOUTA
2
NR
3
REFOUT
4
NC
5
REFCOM
6
IREFIN
7
DB0
Data Bit 0
8
DB1
Data Bit 1
9
DB2
Data Bit 2
10
DB3
Data Bit 3
11
DB4
Data Bit 4
12
DB5
Data Bit 5
13
DB6
Data Bit 6
14
DB7
Data Bit 7
15
DCOM
Digital Ground.
16
CLOCK
Clock Input. Data latched on positive edge of clock.
17
DB8
Data Bit 8
18
DB9
Data Bit 9
19
DB10
Data Bit 10
20
DB11
Data Bit 11
21
DB12
Data Bit 12
22
DB13
Data Bit 13
23
DB14
Data Bit 14
24
DB15
Data Bit 15
25
VDD
Positive Supply Voltage. Nominasl is +5V.
26
VEE
Negative Supply Voltage. Nominasl is -5V
27
IOUTB
28
LADCOM
DAC Current Output. Full-scale current when all data bits are 1.
Noise Reduction Node. add capacitor for noise reduction.
Reference Output Voltage. Nominal value is 2.5V.
No Connection. Reserved for internal use.
Reference Ground.
Reference Input Current. Nominal is 5 mA. DAC full-scale is 4X this current.
Memory
Complementary DAC Current Output. Full-scale current when all data bits are 0s.
DAC Ladder Common.
09.25.14 Rev 1
All data sheets are subject to change without notice
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©2014 Maxwell Technologies
All rights reserved.
768A
16-BIT, 30 MSPS DIGITAL-TO-ANALOG Converter
TABLE 2. 768A ABSOLUTE MAXIMUM RATINGS 1
MIN
MAX
UNIT
Positive Supply Voltage (VDD)
-0.5
+6.0
V
Negative Supply Voltage(VEE)
-6.0
+0.5
V
Analog Ground to Other Grounds (REFCOM)
-0.5
+0.5
V
Digital Ground to Other Grounds (DCOM)
-0.5
+0.5
V
Reference Output (REFOUT)
--
VDD + 0.5
V
Reference Input Current (IREFIN)
--
+7.5
mA
Digital Inputs (DB0 - DB15, CLOCK)
-0.5
VDD + 0.5
V
Analog Outputs (IOUTA, IOUTB)
-2.0
+5.0
V
Weight
--
2
grams
Thermal Resistance ( Tjc )
--
12.5
°C/W
MAX Junction Temperature
--
+150
°C
Operating Temperature
-55
+85
°C
Storage Tempurature
-65
+150
°C
Memory
PARAMETER
1. Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
TABLE 3. DELTA LIMITS1
PARAMETER
VARIATION
IDD
±10% of specified value in Table 4
IEE
±10% of specified value in Table 4
Vref
±10 mV
1) Parameters are measured and recorded as Deltas per MIL-STD-883 for Class S Devices
TABLE 4. 768A ELECTRICAL SPECIFICATIONS
(TMIN TO TMAX, VDD = +5.0V +/- 5%, VEE = -5.0V +/- 5%, LADCOM, REFCOM, DCOM = 0V, IREFIN = 5MA,
CLOCK = 10MHZ, UNLESS OTHERWISE NOTED)
PARAMETER
RESOLUTION1
DC
SUBGROUPS
MIN
TYP
MAX
UNITS
1, 2, 3
16
--
--
Bits
1
2, 3
-8
-8
±4
--
+8
+8
LSB
ACCURACY1
Linearity Error
TA = 25°C
TMIN to TMAX
09.25.14 Rev 1
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©2014 Maxwell Technologies
All rights reserved.
768A
16-BIT, 30 MSPS DIGITAL-TO-ANALOG Converter
TABLE 4. 768A ELECTRICAL SPECIFICATIONS
(TMIN TO TMAX, VDD = +5.0V +/- 5%, VEE = -5.0V +/- 5%, LADCOM, REFCOM, DCOM = 0V, IREFIN = 5MA,
CLOCK = 10MHZ, UNLESS OTHERWISE NOTED)
PARAMETER
Differential Non-Linearity
TA = 25°C
TMIN to TMAX
Monotonicity
SUBGROUPS
MIN
TYP
MAX
UNITS
1
2, 3
-6
-8
±2
--
+6
+8
LSB
Guarenteed over Specified Temp Range
ANALOG OUTPUT
Offset Error
1, 2, 3
-0.2
--
+0.2
% of FSR
Gain Error
1, 2, 3
-1.0
--
+1.0
% of FSR
Full-scale Output Current2
1, 2, 3
--
20
--
mA
Output Compliance Range
1, 2, 3
-1.2
--
+5.0
V
Output Resistance
1, 2, 3
0.8
1.0
1.2
kW
Output Capacitance
1, 2, 3
--
3
--
pF
Reference Voltage (Vref)
1, 2, 3
2.475
2.5
2.525
V
Reference Output Current3, 7
1, 2, 3
--
+5.0
+15
mA
Reference Input Current
1, 2, 3
1
5
7
mA
Reference Bandwidth4
Small Signal, IREF = 5mA ± 0.1mA
Large Signal, IREF= 4 mA ± 2mA
1, 2, 3
---
28
9
---
MHz
Memory
REFERNCE OUTPUT
REFERNCE INPUT
TEMPERATURE COEFFICIENTS6
Unipolar Offset Drift
1, 2, 3
-5
--
+5
ppm of FSR/°C
Gain Drift (Excludes Internal Reference Drift)
1, 2, 3
-20
--
+20
ppm of FSR/°C
Gain Drift (Includes Internal Reference Drift)
1, 2, 3
-40
--
+40
ppm of FSR/°C
Reference Voltage Drift
1, 2, 3
-30
--
+30
ppm/°C
Maximum Output Update Rate6
9,10,11
30
40
Output Settling Time (tST) (to 0.025%)6
1, 2, 3
--
25
35
ns
Output Propagation Delay(tPD)
1, 2, 3
--
10
--
ns
Glitch Impulse
1, 2, 3
--
35
--
pV-s
Output Rise Time (10% to 90%)
1, 2, 3
--
5
--
ns
Output Fall Time (10% to 90%)
1, 2, 3
--
5
--
ns
Output Noise (DB0 to DB15 High into 50W)
1, 2, 3
--
3
--
nV/Hz-2
Diffrerential Gain Error
1, 2, 3
--
0.01
--
%
Differential Phase Error
1, 2, 3
--
0.01
--
Degree
7, 8
3.5
--
--
V
DYNAMIC PERFOMANCE5
MSPS
DIGITAL INPUTS
Logic “1” Voltage7
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768A
16-BIT, 30 MSPS DIGITAL-TO-ANALOG Converter
TABLE 4. 768A ELECTRICAL SPECIFICATIONS
(TMIN TO TMAX, VDD = +5.0V +/- 5%, VEE = -5.0V +/- 5%, LADCOM, REFCOM, DCOM = 0V, IREFIN = 5MA,
CLOCK = 10MHZ, UNLESS OTHERWISE NOTED)
PARAMETER
SUBGROUPS
MIN
TYP
MAX
UNITS
Logic “0” Voltage7
7, 8
--
--
1.5
V
Logic “1” Current
1, 2, 3
-10
--
+10
uA
Logic “0” Current
1, 2, 3
-10
--
+10
uA
--
20
--
pF
Input Capacitance
Input Set-up Time (tS)7
7, 8
10
--
--
ns
Input Hold Time (tH)7
7, 8
5
--
--
ns
Latch Pulse Width7 (tLPW)
7, 8
10
--
--
ns
----
86
85
78
79
--
dB
----
74
73
67
70
---
dB
----
-71
-66
-61
-68
--
dB
AC LINEARITY8
4, 5, 6
Spurious-Free Dynamic Range (SDFR to Nyquist)
FOUT = 1.002 MHz, Clock = 10MHz
FOUT = 1.002 MHz, Clock = 20MHz
FOUT = 5.002 MHz, Clock = 30MHz
4, 5, 6
Total Harmonic Distortion (THD)
4, 5, 6
FOUT = 1.002 MHz, Clock = 10MHz
FOUT = 1.002 MHz, Clock = 20MHz
FOUT = 5.002 MHz, Clock = 30MHz
Memory
Spurious-Free Dynamic Range (SDFR Within a Window)
FOUT = 1.002 MHz, Clock = 10MHz, 2MHz Span)
FOUT = 1.002 MHz, Clock = 20MHz, 2MHz Span)
FOUT = 5.002 MHz, Clock = 30MHz, 10MHz Span)
POWER SUPPLY
Positive Voltage Range
1, 2, 3
4.75
5
5.25
V
Negative Voltage Supply
1, 2, 3
-5.25
-5
-4.75
V
Positive Supply Current ( IDD )
1, 2, 3
--
30
40
mA
Negative Supply Current ( IEE )
1, 2, 3
--
63
73
mA
Nominal Power Dissipation
1, 2, 3
--
465
600
mW
Power SupplyRejection Ratio (PSRR)
1, 2, 3
-0.2
--
+0.2
% of FSR/V
1. Measured at IOUTA, driving a virtual ground.
2. Nominal FS current is 4X the current at IREFIN. Therefore, nominal FS current is 20mA when IREFIN = 5mA.
3. Output current is defined as total output current avalable for IREFIN and any external load.
4. Reference bandwidth is a function of external cap at NR pin.
5. Measured as unbuffered voltage output ( 1V Range ) with FS current into 50W load at IOUTB.
6. Guaranteed by Design
7. Application of Signal
8. Not Tested
09.25.14 Rev 1
All data sheets are subject to change without notice
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©2014 Maxwell Technologies
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768A
16-BIT, 30 MSPS DIGITAL-TO-ANALOG Converter
POD
Memory
TABLE 5. 28 PIN FLAT PACKAGE
SYMBOL
DIMENSIONS
A
Min
0.090
Nom
0.109
MAX
0.143
b
0.015
0.017
0.022
c
0.004
0.005
0.009
D
--
0.720
0.740
E
0.380
0.410
0.420
E1
--
--
0.440
E2
0.180
0.280
--
E3
0.030
0.065
--
e
0.050 BSC
L
0.390
0.400
0.410
Q
0.021
0.035
0.045
S1
0.000
0.027
--
N
28
Note: All dimensions in inches
Top and Bottom of the package are internally tied to ground.
09.25.14 Rev 1
All data sheets are subject to change without notice
6
©2014 Maxwell Technologies
All rights reserved.
16-BIT, 30 MSPS DIGITAL-TO-ANALOG Converter
768A
Important Notice:
These data sheets are created using the chip manufacturer’s published specifications. Maxwell
Technologies verifies functionality by testing key parameters either by 100% testing, sample testing or characterization.
The specifications presented within these data sheets represent the latest and most accurate
information available to date. However, these specifications are subject to change without notice
and Maxwell Technologies assumes no responsibility for the use of this information.
Maxwell Technologies’ products are not authorized for use as critical components in life support
devices or systems without express written approval from Maxwell Technologies.
Any claim against Maxwell Technologies must be made within 90 days from the date of shipment
from Maxwell Technologies. Maxwell Technologies’ liability shall be limited to replacement of
defective parts.
Memory
09.25.14 Rev 1
All data sheets are subject to change without notice
7
©2014 Maxwell Technologies
All rights reserved.
768A
16-BIT, 30 MSPS DIGITAL-TO-ANALOG Converter
Product Ordering Options
Model Number
768A
RT
F
X
Option Details
Feature
Screening Flow
Radiation Feature
Base Product
Nomenclature
Memory
Package
Monolithic1
S = Maxwell Class S
B = Maxwell Class B
I = Industrial (testing @ -55°C, +25°C, +85°C)
E = Engineering (testing @ +25°C)
F = Flat Pack
RT = RAD TOLERANT Package (100kRad)
16-Bit DAC
1) Products are screened to Maxwell Technolgies Self-Defined Class B and Class S flows.
09.25.14 Rev 1
All data sheets are subject to change without notice
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©2014 Maxwell Technologies
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