Multiple Range, 16-/12-Bit,
Bipolar/Unipolar, Voltage Output DACs
Data Sheet
AD5761/AD5721
FEATURES
GENERAꢀ DESCRIPTION
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 ꢀSB maximum INꢀ
Guaranteed monotonicity: 1 ꢀSB maximum
Single channel, 16-/12-bit DACs
Settling time: 7.5 μs typical
Integrated reference buffers
ꢀow noise: 35 nV/√Hz
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
V
DD. 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.
ꢀow glitch: 1 nV-sec
1.8 V logic compatibility
Asynchronous updating via ꢀDAC
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 ꢀFCSP
Operating temperature range: −40°C to +125°C
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.
APPꢀICATIONS
Industrial automation
Instrumentation, data acquisition
Open-/closed-loop servo control, process control
Programmable logic controllers
Table 1. Pin-Compatible Devices
Device
Description
AD5761R/AD5721R AD5761/AD5721 with internal reference
FUNCTIONAꢀ BꢀOCK DIAGRAM
V
V
REFIN
DD
AD5761/AD5721
REFERENCE
BUFFERS
DV
CC
0V TO 5V
0V TO 10V
0V TO 16V
0V TO 20V
±3V
ALERT
SDI
SCLK
INPUT SHIFT
REGISTER
AND
CONTROL
LOGIC
12/16
12/16
12-BIT/
16-BIT
DAC
INPUT
REG
DAC
REG
V
OUT
SYNC
SDO
±5V
±10V
−2.5V TO +7.5V
RESET
CLEAR
DNC
DGND
V
LDAC
AGND
SS
NOTES
1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN.
Figure 1.
Rev. C
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