下载
Multiple Range, 16-/12-Bit, Bipolar/Unipolar
Voltage Output DACs with 2 ppm/°C Reference
Data Sheet
AD5761R/AD5721R
Rev. B 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 ©2014–2016 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
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, and −2.5 V to +7.5 V;
5% overrange
Low drift 2.5 V reference: ±2 ppm/°C typical
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 (0 V to 5 V range)
1.7 V to 5.5 V digital supply range
Asynchronous updating via
LDAC
Asynchronous
RESET
to zero scale/midscale
DSP-/microcontroller-compatible serial interface
Robust 4 kV HBM ESD rating
16-lead, 3 mm × 3 mm LFCSP package
16-lead TSSOP package
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 AD5761R/AD5721R 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 V
SS
and 4.75 V to
16.5 V V
DD
. The integrated output amplifier, reference buffer,
and reference 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 AD5761R/AD5721R 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 a 3 mm × 3 mm LFCSP package and a
16-lead TSSOP package offer guaranteed specifications over the
−40°C to +125°C industrial temperature range.
FUNCTIONAL BLOCK DIAGRAM
12-BIT/
16-B
IT
DAC
L
DAC
V
OUT
RE
FERENCE
BUFFERS
SDI
SCLK
SYNC
SDO
RESET
V
DD
V
SS
DV
CC
INPUT SHIFT
R
EGISTER
AND
CONT
ROL
LOGIC
DGN
D AGND
AD5761R/AD5721R
CL
EAR
I
NPUT
REG
DAC
REG
12/16
12/16
2.
5V
REF
ERE
NCE
ALERT
V
R
EFI
N
/V
REF
OUT
DNC
NOTES
1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN.
12355-001
0V TO 5V
0V TO 10V
0V
TO 16V
0V TO 20V
±3V
±5V
±10V
−2.5V
TO +7.5
V
Figure 1.
页面指南
