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AD5697R Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD5697R
Beschreibung Dual 12-Bit nanoDAC+
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 28 Seiten
AD5697R Datasheet, Funktion
Data Sheet
Dual, 12-Bit nanoDAC+
with 2 ppm/°C Reference, I2C Interface
AD5697R
FEATURES
Low drift 2.5 V reference: 2 ppm/°C typical
Tiny package: 3 mm × 3 mm, 16-lead LFCSP
Total unadjusted error (TUE): ±0.1% of full-scale range (FSR)
maximum
Offset error: ±1.5 mV maximum
Gain error: ±0.1% of FSR maximum
High drive capability: 20 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
Low glitch: 0.5 nV-sec
400 kHz I2C-compatible serial interface
Low power: 3.3 mW at 3 V
2.7 V to 5.5 V power supply
−40°C to +105°C temperature range
APPLICATIONS
Base station power amplifiers
Process controls (programmable logic controller [PLC] I/O cards)
Industrial automation
Data acquisition systems
GENERAL DESCRIPTION
The AD5697R, a member of the nanoDAC+™ family, is a low power,
dual, 12-bit buffered voltage output digital-to-analog converter
(DAC). The device includes a 2.5 V, 2 ppm/°C internal reference
(enabled by default) and a gain select pin giving a full-scale output
of 2.5 V (gain = 1) or 5 V (gain = 2). The AD5697R 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 and a TSSOP package.
The AD5697R also incorporates a power-on reset circuit and a
RSTSEL pin that ensure that the DAC outputs power up to zero
scale or midscale and remain there until a valid write takes
place. It contains a per channel power-down feature that reduces
the current consumption of the device to 4 µA at 3 V while in
power-down mode.
The AD5697R uses a versatile 2-wire serial interface that operates
at clock rates up to 400 kHz and includes a VLOGIC pin intended
for 1.8 V/3 V/5 V logic.
FUNCTIONAL BLOCK DIAGRAM
VDD
GND
VREF
VLOGIC
SCL
AD5697R
SDA
INPUT
REGISTER
A1 INPUT
REGISTER
A0
2.5V
REFERENCE
DAC
REGISTER
STRING
DAC A
DAC
STRING
REGISTER DAC B
BUFFER
BUFFER
VOUTA
VOUTB
LDAC RESET
POWER-ON
RESET
GAIN =
×1/×2
RSTSEL
GAIN
Figure 1.
POWER-
DOWN
LOGIC
Table 1. Dual nanoDAC+ Devices
Interface
Reference
16-Bit
SPI
Internal
AD5689R
External
AD5689
I2C Internal
12-Bit
AD5687R
AD5687
AD5697R
PRODUCT HIGHLIGHTS
1. Precision DC Performance.
TUE: ±0.1% of FSR maximum
Offset error: ±1.5 mV maximum
Gain error: ±0.1% of FSR maximum
2. Low Drift 2.5 V On-Chip Reference.
2 ppm/°C typical temperature coefficient
5 ppm/°C maximum temperature coefficient
3. Two Package Options.
3 mm × 3 mm, 16-lead LFCSP
16-lead TSSOP
Rev. B
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2013–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com






AD5697R Datasheet, Funktion
Data Sheet
AD5697R
AC CHARACTERISTICS
VDD = 2.7 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; 1.62 V ≤ VLOGIC ≤ 5.5 V; all specifications TMIN to TMAX, unless otherwise
noted. Guaranteed by design and characterization; not production tested.
Table 3.
Parameter1
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)3
Output Noise Spectral Density
Output Noise
Signal-to-Noise Ratio (SNR)
Spurious-Free Dynamic Range (SFDR)
Signal-to-Noise-and-Distortion Ratio (SINAD)
Min Typ Max Unit
Test Conditions/Comments2
5 7 µs
¼ to ¾ scale settling to ±2 LSB
0.8 V/µs
0.5 nV-sec 1 LSB change around major carry
0.13 nV-sec
0.1 nV-sec
0.2 nV-sec
0.3 nV-sec
−80 dB At ambient, bandwidth = 20 kHz, VDD = 5 V, fOUT = 1 kHz
300 nV/√Hz DAC code = midscale, 10 kHz; gain = 2, internal reference
6 µV p-p 0.1 Hz to 10 Hz
90 dB At ambient, bandwidth = 20 kHz, VDD = 5 V, fOUT = 1 kHz
83 dB At ambient, bandwidth = 20 kHz, VDD = 5 V, fOUT = 1 kHz
80 dB At ambient, bandwidth = 20 kHz, VDD = 5 V, fOUT = 1 kHz
1 See the Terminology section.
2 Temperature range is −40°C to +105°C, typical at 25°C.
3 Digitally generated sine wave at 1 kHz.
Rev. B | Page 5 of 27

6 Page









AD5697R pdf, datenblatt
Data Sheet
1.4
VDD = 5V
INTERNAL REFERENCE = 2.5V
1.2
1.0
0.8
0.6
0.4 ZERO-CODE ERROR
0.2
OFFSET ERROR
0
–40 –20
0
20 40 60 80 100 120
TEMPERATURE (°C)
Figure 17. Zero-Code Error and Offset Error vs. Temperature
0.10
0.08
0.06
0.04
0.02
0
–0.02
GAIN ERROR
FULL-SCALE ERROR
–0.04
–0.06
–0.08 TA = 25°C
–0.10 INTERNAL REFERENCE = 2.5V
2.7 3.2 3.7 4.2
4.7
SUPPLY VOLTAGE (V)
5.2
Figure 18. Gain Error and Full-Scale Error vs. Supply
1.5
1.0
0.5
ZERO-CODE ERROR
0
–0.5
OFFSET ERROR
–1.0
TA = 25°C
INTERNAL REFERENCE = 2.5V
–1.5
2.7 3.2 3.7 4.2
4.7
SUPPLY VOLTAGE (V)
5.2
Figure 19. Zero-Code Error and Offset Error vs. Supply Voltage
AD5697R
0.10
VDD = 5V
0.09 INTERNAL REFERENCE = 2.5V
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
–40 –20
0
20 40 60 80 100
TEMPERATURE (°C)
Figure 20. Total Unadjusted Error vs. Temperature
120
0.10
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08 TA = 25°C
INTERNAL REFERENCE = 2.5V
–0.10
2.7 3.2 3.7 4.2
4.7
SUPPLY VOLTAGE (V)
5.2
Figure 21. Total Unadjusted Error vs. Supply Voltage, Gain = 1
0
–0.01
–0.02
–0.03
–0.04
–0.05
–0.06
–0.07
–0.08
–0.09
–0.10
VDD = 5V
TA = 25°C
INTERNAL REFERENCE = 2.5V
0 10000 20000 30000
40000
CODE
50000 60000 65535
Figure 22. Total Unadjusted Error vs. Code
Rev. B | Page 11 of 27

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