AD5721 Datasheet PDF - Analog Devices
| Part Number | AD5721 | |
| Description | Voltage Output DAC | |
| Manufacturers | Analog Devices | |
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Data Sheet
Multiple Range, 16-/12-Bit,
Bipolar/Unipolar, Voltage Output DACs
AD5761/AD5721
FEATURES
8 software-programmable output ranges: 0 V to 5 V, 0 V to 10 V,
0 V to 16 V, 0 V to 20 V, ±3 V, ±5 V, ±10 V, −2.5 V to +7.5 V;
5% overrange
Total unadjusted error (TUE): 0.1% FSR maximum
16-bit resolution: ±2 LSB maximum INL
Guaranteed monotonicity: ±1 LSB maximum
Single channel, 16-/12-bit DACs
Settling time: 7.5 µs typical
Integrated reference buffers
Low noise: 35 nV/√Hz
Low glitch: 1 nV-sec
1.8 V logic compatibility
Asynchronous updating via LDAC
Asynchronous RESET to zero scale/midscale
DSP/microcontroller-compatible serial interface
Robust 4 kV HBM ESD rating
Available in 16-lead TSSOP and 16-lead LFCSP
Operating temperature range: −40°C to +125°C
APPLICATIONS
Industrial automation
Instrumentation, data acquisition
Open-/closed-loop servo control, process control
Programmable logic controllers
GENERAL DESCRIPTION
The AD5761/AD5721 are single channel, 16-/12-bit serial input,
voltage output, digital-to-analog converters (DACs). They operate
from single supply voltages from 4.75 V to 30 V or dual supply
voltages from −16.5 V to 0 V VSS and 4.75 V to 16.5 V VDD. The
integrated output amplifier and reference buffer provide a very
easy to use, universal solution.
The devices offer guaranteed monotonicity, integral nonlinearity
(INL) of ±2 LSB maximum, 35 nV/√Hz noise, and 7.5 µs settling
time on selected ranges.
The AD5761/AD5721 use a serial interface that operates at
clock rates of up to 50 MHz and are compatible with DSP and
microcontroller interface standards. Double buffering allows
the asynchronous updating of the DAC output. The input
coding is user-selectable twos complement or straight binary.
The asynchronous reset function resets all registers to their
default state. The output range is user selectable, via the
RA[2:0] bits in the control register.
The devices available in the 16-lead TSSOP and in the 16-lead
LFCSP offer guaranteed specifications over the −40°C to +125°C
industrial temperature range.
Table 1. Pin-Compatible Devices
Device
Description
AD5761R/AD5721R AD5761/AD5721 with internal reference
FUNCTIONAL BLOCK DIAGRAM
VDD
VREFIN
DVCC
ALERT
SDI
SCLK
SYNC
SDO
RESET
CLEAR
AD5761/AD5721
INPUT SHIFT
REGISTER
AND
CONTROL
LOGIC
12/16
INPUT
REG
REFERENCE
BUFFERS
DAC 12/16 12-BIT/
REG
16-BIT
DAC
DNC
DGND VSS
LDAC
AGND
NOTES
1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN.
Figure 1.
VOUT
0V TO 5V
0V TO 10V
0V TO 16V
0V TO 20V
±3V
±5V
±10V
−2.5V TO +7.5V
Rev. B
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Tel: 781.329.4700 ©2015–2016 Analog Devices, Inc. All rights reserved.
Technical Support
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Data Sheet
AD5761/AD5721
AC PERFORMANCE CHARACTERISTICS
VDD1 = 4.75 V to 30 V, VSS1= −16.5 V to 0 V, AGND = DGND = 0 V, VREFIN = 2.5 V external, DVCC = 1.7 V to 5.5 V, RLOAD = 1 kΩ for all
ranges except 0 V to 16 V and 0 V to 20 V for which RLOAD = 2 kΩ, CLOAD = 200 pF, all specifications TMIN to TMAX, unless otherwise noted.
Table 3.
Parameter2
DYNAMIC PERFORMANCE3
Output Voltage Settling Time
Digital-to-Analog Glitch Impulse
Glitch Impulse Peak Amplitude
Power-On Glitch
Digital Feedthrough
Output Noise
0.1 Hz to 10 Hz Bandwidth (BW)
100 kHz BW
Output Noise Spectral Density (at 10 kHz)
Total Harmonic Distortion (THD)4
Signal-to-Noise Ratio (SNR)
Peak Harmonic or Spurious Noise (SFDR)
Signal-to-Noise-and-Distortion
(SINAD) Ratio
Min Typ Max Unit
Test Conditions/Comments
9 12.5 µs
20 V step to 1 LSB at 16-bit resolution
7.5 8.5 µs
10 V step to 1 LSB at 16-bit resolution
5 µs
512 LSB step to 1 LSB at 16-bit resolution
8 nV-sec ±10 V range
1 nV-sec 0 V to 5 V range
15 mV ±10 V range
10 mV 0 V to 5 V range
100 mV p-p
0.6 nV-sec
15 µV p-p
45 µV rms 0 V to 20 V and 0 V to 16 V ranges, 2.5 V external reference
35 µV rms 0 V to 10 V, ±10 V, −2.5 V to +7.5 V ranges, 2.5 V external
reference
25 µV rms ±5 V range, 2.5 V external reference
15 µV rms +5 V, ±3 V ranges; 2.5 V external reference
80 nV/√Hz ±10 V range, 2.5 V external reference
35 nV/√Hz ±3 V range, 2.5 V external reference
70 nV/√Hz ±5 V, 0 V to 10 V, and −2.5 V to +7.5 V ranges; 2.5 V external
reference
110 nV/√Hz 0 V to 20 V range, 2.5 V external reference
90 nV/√Hz 0 V to 16 V range, 2.5 V external reference
45 nV/√Hz 0 V to 5 V range, 2.5 V external reference
−87 dB 2.5 V external reference, 1 kHz tone
92 dB At ambient, 2.5 V external reference, BW = 20 kHz, fOUT = 1 kHz
92 dB At ambient, 2.5 V external reference, BW = 20 kHz, fOUT = 1 kHz
85 dB At ambient, 2.5 V external reference, BW = 20 kHz, fOUT = 1 kHz
1 For specified performance, headroom requirement is 1 V.
2 Temperature range: −40°C to +125°C, typical at +25°C.
3 Guaranteed by design and characterization; not production tested.
4 Digitally generated sine wave at 1 kHz.
Rev. B | Page 5 of 31
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| Information | Total 30 Pages | |
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