1 ppm 20-Bit,
1 LSB INL, Voltage Output DAC
Data Sheet
AD5791
FEATURES
FUNCTIONAL BLOCK DIAGRAM
V
V
V
V
CC
DD
REFPF REFPS
1 ppm resolution
1 ppm INL
6.8kΩ 6.8kΩ
R1
AD5791
7.5 nV/√Hz noise spectral density
0.19 LSB long-term linearity stability
<0.05 ppm/°C temperature drift
1 µs settling time
A1
R
IOV
CC
FB
R
FB
INV
SDIN
SCLK
SYNC
SDO
INPUT
SHIFT
20
20
20-BIT
DAC
DAC
REG
V
OUT
REGISTER
AND
CONTROL
LOGIC
1.4 nV-sec glitch impulse
Operating temperature range: −40°C to +125°C
20-lead TSSOP package
Wide power supply range up to 16.5 V
35 MHz Schmitt triggered digital interface
1.8 V compatible digital interface
6kΩ
LDAC
CLR
POWER-ON-RESET
AND CLEAR LOGIC
RESET
DGND
V
AGND
V
V
SS
REFNF REFNS
Figure 1.
APPLICATIONS
Table 1. Complementary Devices
Medical instrumentation
Test and measurement
Industrial control
High end scientific and aerospace instrumentation
Part No.
Description
AD8675
Ultra precision, 36 V, 2.8 nV/√Hz rail-to-rail
output op amp
AD8676
Ultra precision, 36 V, 2.8 nV/√Hz dual rail-to-
rail output op amp
ADA4898-1
High voltage, low noise, low distortion, unity
gain stable, high speed op amp
Table 2. Related Device
Part No.
Description
AD5781
18-bit, 0.5 LSB INL, voltage output DAC
GENERAL DESCRIPTION
The AD57911 is a single 20-bit, unbuffered voltage-output DAC
that operates from a bipolar supply of up to 33 V. The AD5791
accepts a positive reference input in the range 5 V to VDD − 2.5 V
and a negative reference input in the range VSS + 2.5 V to 0 V.
The AD5791 offers a relative accuracy specification of 1 LSB
max, and operation is guaranteed monotonic with a 1 LSB
DNL maximum specification.
output powers up to 0 V and in a known output impedance
state and remains in this state until a valid write to the device
takes place. The part provides an output clamp feature that
places the output in a defined load state.
PRODUCT HIGHLIGHTS
1. 1 ppm Accuracy.
2. Wide Power Supply Range up to 16.5 V.
3. Operating Temperature Range: −40°C to +125°C.
4. Low 7.5 nV/√Hz Noise Spectral Density.
5. Low 0.05 ppm/°C Temperature Drift.
The part uses a versatile 3-wire serial interface that operates at
clock rates up to 35 MHz and that is compatible with standard
SPI, QSPI™, MICROWIRE™, and DSP interface standards. The
part incorporates a power-on reset circuit that ensures the DAC
1 Protected by U.S. Patent No. 7,884,747. Other patents pending.
Rev. D
Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rightsof third parties that may result fromits 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 andregisteredtrademarks 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 ©2010–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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