REV. 0

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. 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

© 2003 Analog Devices, Inc. All rights reserved.

8-/10-/12-Bit, High Bandwidth,

Multiplying DACs with Parallel Interface

*U.S. Patent No. 5,689,257

FEATURES

2.5 V to 5.5 V Supply Operation

Fast Parallel Interface (17 ns Write Cycle)

10 MHz Multiplying Bandwidth

10 V Reference Input

Extended Temperature Range –40 C to +125 C

20-Lead TSSOP and Chip Scale (4 mm

4 mm) Packages

8-, 10-, and 12-Bit Current Output DACs

Upgrades to AD7524/AD7533/AD7545

Pin Compatible 8-, 10-, and 12-Bit DACs in Chip Scale

Guaranteed Monotonic

4-Quadrant Multiplication

Power-On Reset with Brownout Detection

Readback Function

0.4

A Typical Power Consumption

APPLICATIONS

Portable Battery-Powered Applications

Waveform Generators

Analog Processing

Instrumentation Applications

Programmable Amplifiers and Attenuators

Digitally-Controlled Calibration

Programmable Filters and Oscillators

Composite Video

Ultrasound

Gain, Offset, and Voltage Trimming

GENERAL DESCRIPTION

The AD5424/AD5433/AD5445 are CMOS 8-, 10-, and 12-bit

current output digital-to-analog converters (DACs), respectively.

These devices operate from a 2.5 V to 5.5 V power supply,

making them suited to battery-powered applications and many

other applications.

These DACs utilize data readback allowing the user to read the

contents of the DAC register via the DB pins. On power-up, the

internal register and latches are filled with 0s and the DAC

outputs are at zero scale.

As a result of manufacture on a CMOS submicron process, they

offer excellent 4-quadrant multiplication characteristics, with

large signal multiplying bandwidths of up to 10 MHz.

the full-scale output current. An integrated feedback resistor

when combined with an external I-to-V precision amplifier.

While these devices are upgrades of AD7524/AD7533/AD7545

in multiplying bandwidth performance, they have a latched

interface and cannot be used in transparent mode.

The AD5424 is available in small 20-lead LFCSP and 16-lead

TSSOP packages, while the AD5433/AD5445 DACs are avail-

able in small 20-lead LFCSP and TSSOP packages.

FUNCTIONAL BLOCK DIAGRAM

R/

W

CS

AD5424/

AD5433/

AD5445

R

8-/10-/12-BIT

R-2R DAC

DAC REGISTER

INPUT LATCH

POWER-ON

RESET

DB0

DB7/DB9/DB11

DATA

INPUTS

GND