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Multiple Range, 16-/12-Bit, Bipolar/Unipolar
Voltage Output DACs with 2 ppm/°C Reference
Data Sheet
AD5761R/AD5721R
Rev. B Document Feedback
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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.
Verzeichnis
- ・ Konfiguration des Pinbelegungsdiagramms on Seite 10 Seite 11 Seite 35
- ・ Abmessungen des Paketumrisses on Seite 35
- ・ Teilenummerierungssystem on Seite 35
- ・ Blockdiagramm on Seite 1 Seite 26
- ・ Beschreibung der Funktionen on Seite 1 Seite 10 Seite 11 Seite 35
- ・ Technische Daten on Seite 1 Seite 3 Seite 9
- ・ Anwendungsbereich on Seite 1 Seite 34
- ・ Elektrische Spezifikation on Seite 6
