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Analog Devices Semiconductor Electronic Components Datasheet

AD5721R Datasheet

Bipolar/Unipolar Voltage Output DACs

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AD5721R pdf
Data Sheet
Multiple Range, 16-/12-Bit, Bipolar/Unipolar
Voltage Output DACs with 2 ppm/°C Reference
AD5761R/AD5721R
FEATURES
GENERAL 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, 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 accuracy: ±2 LSB maximum
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
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 VSS and 4.75 V to
16.5 V VDD. 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.
Industrial automation
Instrumentation, data acquisition
Open-/closed-loop servo control, process control
Programmable logic controllers
FUNCTIONAL BLOCK DIAGRAM
VDD
VREFIN/VREFOUT
DVCC
ALERT
SDI
SCLK
SYNC
SDO
RESET
CLEAR
AD5761R/AD5721R
2.5V
REFERENCE
REFERENCE
BUFFERS
INPUT SHIFT
REGISTER
AND
CONTROL
LOGIC
12/16
INPUT
REG
DAC 12/16
REG
12-BIT/
16-BIT
DAC
NOTES
DNC
DGND VSS
LDAC
AGND
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. A
Document Feedback
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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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2014–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


Analog Devices Semiconductor Electronic Components Datasheet

AD5721R Datasheet

Bipolar/Unipolar Voltage Output DACs

No Preview Available !

AD5721R pdf
AD5761R/AD5721R
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AC Performance Characteristics ................................................ 6
Timing Characteristics ................................................................ 7
Timing Diagrams.......................................................................... 7
Absolute Maximum Ratings............................................................ 9
ESD Caution.................................................................................. 9
Pin Configurations and Function Descriptions ......................... 10
Typical Performance Characterstics............................................. 12
Terminology .................................................................................... 23
Theory of Operation ...................................................................... 25
Digital-to-Analog Converter .................................................... 25
Transfer Function ....................................................................... 25
DAC Architecture....................................................................... 25
Serial Interface ............................................................................ 26
Hardware Control Pins .............................................................. 26
REVISION HISTORY
5/15—Rev. 0 to Rev. A
Added LFCSP Package.......................................................Universal
Changes to Table 1............................................................................ 3
Changes to Table 2............................................................................ 6
Changes to Table 4............................................................................ 9
Added Figure 6 and Table 6; Renumbered Sequentially ........... 11
Changes to Figure 21 to Figure 24................................................ 14
Changes to Figure 35...................................................................... 16
Changes to Figure 37...................................................................... 17
Changes to Figure 50...................................................................... 19
Changes to Figure 58 to Figure 60................................................ 20
Changes to Figure 61 to Figure 66................................................ 21
Changes to Figure 69...................................................................... 22
Data Sheet
Thermal Hysteresis .................................................................... 27
Register Details ............................................................................... 28
Input Shift Register .................................................................... 28
Control Register ......................................................................... 29
Readback Control Register ....................................................... 30
Update DAC Register from Input Register............................. 31
Readback DAC Register ............................................................ 31
Write and Update DAC Register .............................................. 31
Readback Input Register............................................................ 32
Disable Daisy-Chain Functionality.......................................... 32
Software Data Reset ................................................................... 32
Software Full Reset..................................................................... 33
No Operation Registers ............................................................. 33
Applications Information .............................................................. 34
Typical Operating Circuit ......................................................... 34
Power Supply Considerations ................................................... 34
Evaluation Board ........................................................................ 34
Outline Dimensions ....................................................................... 35
Ordering Guide .......................................................................... 35
Added Figure 71 ............................................................................. 22
Changes to Terminology Section ................................................. 23
Changes to Digital-to-Analog Converter Section and Internal
Reference Section ........................................................................... 25
Changes to Asynchronous Clear Function (CLEAR) Section...... 27
Changes to Table 12 ....................................................................... 29
Changes to Power Supply Considerations Section and
Figure 77 .......................................................................................... 34
Added Figure 79 ............................................................................. 35
Updated Outline Dimensions....................................................... 35
Changes to Ordering Guide .......................................................... 35
11/14—Revision 0: Initial Version
Rev. A | Page 2 of 35


Part Number AD5721R
Description Bipolar/Unipolar Voltage Output DACs
Maker Analog Devices
Total Page 30 Pages
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