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Analog Devices Semiconductor Electronic Components Datasheet

AD5744 Datasheet

(AD5744 / AD5764) Bipolar Voltage Output DAC

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iCMOSTM
Complete, Quad, 14/16-Bit, High Accuracy,
Serial Input, Bipolar Voltage Output DAC
Preliminary Technical Data
AD5744/AD5764
FEATURES
Complete quad 14/16-bit D/A converter
Programmable output range: ±10 V, ±10.25 V, or ±10.5 V
±1 LSB max INL error, ±1 LSB max DNL error
Low noise : 60 nV/√Hz
Settling time: 10µs max
Integrated reference buffers
Internal reference, 10 ppm/°C
On-chip temp sensor, ±5°C accuracy
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 Technology
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 AD5744/64 is a quad, 14/16-bit serial input, voltage output
digital-to analog converter that operates from supply voltages of
±12 V up to ±15 V. Nominal full-scale output range is ±10 V,
provided are integrated output amplifiers, reference buffers,
internal reference, and proprietary power-up/power-down
control circuitry. It also features a digital I/O port that may be
programmed via the serial interface, and an analog temperature
sensor. The part incorporates digital offset and gain adjust
registers per channel.
The AD5744/64 is a high performance converter that offers
guaranteed monotonicity, integral nonlinearity (INL) of ±1 LSB,
low noise and 10 µs settling time and includes an on-chip 5 V
reference with a reference tempco of 10 ppm/°C max. During
power-up (when the supply voltages are changing), Vout is
clamped to 0V via a low impedance path.
The AD5744/64 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 AD5744/64 is ideal
for both closed-loop servo control and open-loop control
applications. The AD5744/64 is available in a 32-lead TQFP
package, and offers guaranteed specifications over the −40°C to
+85°C industrial temperature range. See functional block
diagram, Figure 1.
iCMOS™ Process Technology
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 30V and operating at +/-15V supplies while allowing dramatic reductions in
power consumption and package size, and increased AC and DC performance.
Rev. PrA
15-Nov-04
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. Trademarks and
registered trademarks 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
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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Analog Devices Semiconductor Electronic Components Datasheet

AD5744 Datasheet

(AD5744 / AD5764) Bipolar Voltage Output DAC

No Preview Available !

AD5744 pdf
www.DataSheet4U.com
AD5744/AD5764
TABLE OF CONTENTS
Functional Block Diagram .............................................................. 3
Specifications..................................................................................... 4
AC Performance Characteristics ................................................ 6
Timing Characteristics ................................................................ 7
Absolute Maximum Ratings.......................................................... 10
ESD Caution................................................................................ 10
Pin Configuration and Function Descriptions........................... 11
Terminology .................................................................................... 13
typical performance characteristics ............................................. 15
General Description ....................................................................... 16
dac architecture........................................................................... 16
Reference Buffers........................................................................ 16
Serial interface ............................................................................ 16
Simultaneous Updating Via LDAC .......................................... 17
transfer function ......................................................................... 18
Asynchronous Clear (CLR)....................................................... 18
Function Register ....................................................................... 19
DAta register ............................................................................... 20
REVISION HISTORY
Revision PrA 15-Nov-04: Preliminary Version
Preliminary Technical Data
Coarse gain register.................................................................... 20
Fine gain register ........................................................................ 21
offset register............................................................................... 21
AD5744/64 Features....................................................................... 22
Analog Output Control ............................................................. 22
Digital Offset and Gain Control............................................... 22
Programmable Short-Circuit protection................................. 22
Digital I/O Port........................................................................... 22
Temperature Sensor ................................................................... 22
Local ground offset adjust......................................................... 22
applications information ............................................................... 23
typical operating circuit............................................................. 23
layout guidelines......................................................................... 24
Isolated interface ........................................................................ 24
microprocessor interfacing ....................................................... 24
Evaluation board ........................................................................ 26
Outline Dimensions ....................................................................... 27
Ordering Guide .......................................................................... 27
DataSheet4 U .com
Rev. PrA 15-Nov-04| Page 2 of 27


Part Number AD5744
Description (AD5744 / AD5764) Bipolar Voltage Output DAC
Maker Analog Devices
Total Page 27 Pages
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