Complete, Quad, 16-Bit, High Accuracy,

Serial Input, Bipolar Voltage Output DAC

Preliminary Technical Data

AD5764

Rev. PrC

21-Oct-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.

FEATURES

Complete quad 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

Closed-loop servo control, process control

Data acquisition systems

Automatic Test Equipment

Automotive test and measurement

High accuracy instrumentation

GENERAL DESCRIPTION

The AD5764 is a quad, 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 AD5764 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 AD5764 uses a serial interface that operates at clock rates 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 straight binary formats. The asynchronous

clear function clears all DAC registers to either bipolar zero or

zero-scale depending on the coding used. The AD5764 is ideal for

both closed-loop servo control and open-loop control

applications. The AD5764 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.