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Analog Devices Semiconductor Electronic Components Datasheet

AD5764R Datasheet

Bipolar Voltage Output DAC

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AD5764R pdf
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Complete Quad, 16-Bit, High Accuracy,
Serial Input, Bipolar Voltage Output DAC
Preliminary Technical Data
AD5764R
FEATURES
Complete quad, 16-bit digital-to-analog
converters (DACs)
Programmable output range: ±10 V, ±10.2564 V,
or ±10.5263 V
±1 LSB max INL error, ±1 LSB max DNL error
Low noise: 60 nV/√Hz
Settling time: 10 μs max
Integrated reference buffers
Internal reference: 10 ppm/°C
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
iCMOS™ process technology1
APPLICATIONS
Industrial automation
Open-/closed-loop servo control
Process control
Data acquisition systems
Automatic test equipment
Automotive test and measurement
High accuracy instrumentation
GENERAL DESCRIPTION
The AD5764R is a quad, 16-bit, serial input, bipolar voltage
output digital-to-analog converter that operates from supply
voltages of ±11.4 V up to ±16.5 V. Nominal full-scale output
range is ±10 V. The AD5764R provides integrated output
amplifiers, reference buffers and proprietary power-up/power-
down control circuitry. The parts also feature a digital I/O port,
which is programmed via the serial interface and an analog
temperature sensor. The part incorporates digital offset and
gain adjust registers per channel.
The AD5764R is a high performance converter that offers
guaranteed monotonicity, integral nonlinearity (INL) of ±1 LSB,
low noise, and 10 μs settling time. The AD5764R includes an
on-chip 5 V reference with a reference tempco of 10 ppm/°C
maximum. During power-up (when the supply voltages are
changing), VOUT is clamped to 0 V via a low impedance path.
The AD5764R 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 AD5764R is ideal for both closed-loop servo
control and open-loop control applications. The AD5764R is
available in a 32-lead TQFP, and offers guaranteed
specifications over the −40°C to +85°C industrial temperature
range. See Figure 1, the functional block diagram.
1 For analog systems designers within industrial/instrumentation equipment
OEMs who need high performance ICs at higher voltage levels, iCMOS is a
technology platform that enables the development of analog ICs capable of
30 V and operating at ±15 V supplies while allowing dramatic reductions in
power consumption and package size, and increased AC and DC
performance.
Rev. PrA
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD5764R Datasheet

Bipolar Voltage Output DAC

No Preview Available !

AD5764R pdf
AD5764R
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Functional Block Diagram .............................................................. 3
Specifications..................................................................................... 4
AC Performance Characteristic...................................................... 6
Timing Characteristics..................................................................... 7
Absolute Maximum Ratings.......................................................... 10
ESD Caution................................................................................ 10
Pin Configuration and Function Descriptions........................... 11
Terminology .................................................................................... 13
Typical Performance Characteristics ........................................... 15
Theory of Operation ...................................................................... 20
DAC Architecture....................................................................... 20
Reference Buffers........................................................................ 20
Serial Interface ............................................................................ 20
Simultaneous Updating via LDAC........................................... 21
Transfer Function ....................................................................... 22
Asynchronous Clear (CLR)....................................................... 22
Function Register ....................................................................... 23
REVISION HISTORY
3/06—Revision PrA
Preliminary Technical Data
Data Register............................................................................... 24
Coarse Gain Register ................................................................. 24
Fine Gain Register...................................................................... 24
Offset Register ............................................................................ 24
Offset and Gain Adjustment Worked Example...................... 26
AD5764R 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........................................................................... 29
Galvanically Isolated Interface ................................................. 29
Microprocessor Interfacing....................................................... 29
Evaluation Board ........................................................................ 31
Outline Dimensions ....................................................................... 32
Ordering Guide .......................................................................... 32
Rev. PrA | Page 2 of 32


Part Number AD5764R
Description Bipolar Voltage Output DAC
Maker Analog Devices
Total Page 30 Pages
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