AD5762R DAC Datasheet

AD5762R Datasheet, PDF, Equivalent


Part Number

AD5762R

Description

Bipolar Voltage Output DAC

Manufacture

Analog Devices

Total Page 30 Pages
Datasheet
Download AD5762R Datasheet


AD5762R
Data Sheet
Complete Dual, 16-Bit, High Accuracy,
Serial Input, Bipolar Voltage Output DAC
AD5762R
FEATURES
Complete dual, 16-bit, digital-to-analog converter (DAC)
Programmable output range: ±10 V, ±10.2564 V, or ±10.5263 V
±1 LSB maximum INL error, ±1 LSB maximum DNL error
Low noise: 60 nV/√Hz
Settling time: 10 µs maximum
Integrated reference buffers
Internal reference: 10 ppm/°C maximum
On-chip die temperature sensor
Output control during power-up/brownout
Programmable short-circuit protection
Simultaneous updating via LDAC
Asynchronous CLR to zero code
Digital offset and gain adjust
Logic output control pins
DSP-/microcontroller-compatible serial interface
Temperature range: −40°C to +85°C
Industrial complementary metal-oxide semiconductor
(iCMOS) process technology
APPLICATIONS
Industrial automation
Open-loop/closed-loop servo control
Process control
Data acquisition systems
Automatic test equipment
Automotive test and measurement
High accuracy instrumentation
GENERAL DESCRIPTION
The AD5762R is a dual, 16-bit, serial input, bipolar voltage output
DAC that operates from supply voltages of ±11.4 V to ±16.5 V.
Nominal full-scale output range is ±10 V. The AD5762R provides
integrated output amplifiers, reference buffers, and proprietary
power-up/power-down control circuitry. The device also features a
digital input/output port, programmed via the serial interface,
and an analog temperature sensor. The device incorporates
digital offset and gain adjust registers per channel.
The AD5762R is a high performance converter that provides
guaranteed monotonicity, an integral nonlinearity (INL) of
±1 LSB, low noise, and a 10 µs settling time. The AD5762R
includes an on-chip 5 V reference with a reference temperature
coefficient of 10 ppm/°C maximum. During power-up when the
supply voltages are changing, VOUTx is clamped to 0 V via a low
impedance path.
The AD5762R is based on the iCMOS® technology platform, which
is designed for analog systems designers within industrial/instru-
mentation equipment original equipment manufacturers (OEMs)
who need high performance ICs at higher voltage levels. iCMOS
enables the development of analog ICs capable of 30 V and
operation at ±15 V supplies, while allowing reductions in power
consumption and package size coupled with increased ac and dc
performance.
The AD5762R uses a serial interface that operates at clock rates
of up to 30 MHz and is compatible with DSP and microcontroller
interface standards. Double buffering allows the simultaneous
updating of all DACs. The input coding is programmable to either
twos complement or offset binary formats. The asynchronous
clear function clears all DAC registers to either bipolar zero or
zero scale, depending on the coding used. The AD5762R is
ideal for both closed-loop servo control and open-loop control
applications. The AD5762R is available in a 32-lead TQFP and
offers guaranteed specifications over the −40°C to +85°C
industrial temperature range (see Figure 1 for the functional
block diagram).
Rev. D
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AD5762R
AD5762R
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Functional Block Diagram .............................................................. 3
Specifications..................................................................................... 4
AC Performance Characteristics ................................................ 6
Timing Characteristics ................................................................ 7
Absolute Maximum Ratings.......................................................... 10
Thermal Resistance .................................................................... 10
ESD Caution................................................................................ 10
Pin Configuration and Function Descriptions........................... 11
Typical Performance Characteristics ........................................... 13
Terminology .................................................................................... 19
Theory of Operation ...................................................................... 21
DAC Architecture....................................................................... 21
Reference Buffers........................................................................ 21
Serial Interface ............................................................................ 21
Simultaneous Updating via LDAC........................................... 22
Transfer Function ....................................................................... 23
Asynchronous Clear (CLR)....................................................... 23
Registers ........................................................................................... 24
REVISION HISTORY
6/2016—Rev. C to Rev. D
Changes to Table 7 and Table 8..................................................... 23
9/2011—Rev. B to Rev. C
Changed 50 MHz to 30 MHz Throughout.................................... 1
Changes to t1, t2, and t3 Parameters, Table 3.................................. 7
7/2011—Rev. A to Rev. B
Changed 30 MHz to 50 MHz Throughout.................................... 1
Changes to t1, t2, and t3 Parameters, Table 3.................................. 7
Data Sheet
Function Register ....................................................................... 24
Data Register............................................................................... 25
Coarse Gain Register ................................................................. 25
Fine Gain Register...................................................................... 25
Offset Register ............................................................................ 26
Offset and Gain Adjustment Worked Example ......................... 26
Design Features............................................................................... 27
Analog Output Control ............................................................. 27
Digital Offset and Gain Control............................................... 27
Programmable Short-Circuit Protection ................................ 27
Digital I/O Port........................................................................... 27
Die Temperature Sensor ............................................................ 27
Local Ground Offset Adjust...................................................... 27
Applications Information .............................................................. 28
Typical Operating Circuit ......................................................... 28
Layout Guidelines........................................................................... 30
Galvanically Isolated Interface ................................................. 30
Microprocessor Interfacing....................................................... 30
Evaluation Board ........................................................................ 31
Outline Dimensions ....................................................................... 32
Ordering Guide .......................................................................... 32
8/2009—Rev. 0 to Rev. A
Deleted Endnote 1, Table 1 ..............................................................4
Deleted Endnote 1, Table 2 ..............................................................6
Deleted Endnote 1, Table 3 ..............................................................7
Changes to t6 Parameter, Table 3 .....................................................7
12/2008—Revision 0: Initial Version
Rev. D | Page 2 of 32


Features www.DataSheet4U.com Preliminary Technic al Data FEATURES Complete Dual, 16-Bit , High Accuracy, Serial Input, Bipolar Voltage Output DACs AD5762R GENERAL DES CRIPTION The AD5762R is a dual, 16-bit, serial input, bipolar voltage output d igital-to-analog converter that operate s from supply voltages of ±11.4 V up t o ±16.5 V. Nominal full-scale output r ange is ±10 V. The AD5762R provides in tegrated output amplifiers, reference b uffers and proprietary power-up/powerdo wn control circuitry. The parts also fe ature a digital I/O port, which is prog rammed via the serial interface and an analog temperature sensor. The part inc orporates digital offset and gain adjus t registers per channel. The AD5762R is a high performance converter that offe rs guaranteed monotonicity, integral no nlinearity (INL) of ±1 LSB, low noise, and 10 µs settling time. The AD5762R includes an on-chip 5 V reference with a reference tempco of 10 ppm/°C maximu m. During power-up (when the supply voltages are changing), VOUT is c.
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