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Resistor

Network

8

18

Data

Buffer A

DAC

Register A

Data

Buffer D

DAC

Register D

DAC A

DAC D

Buffer

Control

Register

Control

Power−Down

Control Logic

A0

A1

A2

A3

GND

SCL

SDA

LDAC

DAC7573

SLAS398 – SEPTEMBER 2003

QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT,

FEATURES

DESCRIPTION

•

The DAC7573 is a low-power, quad channel, 12-bit

•

Power-On Reset to Zero

buffered voltage output DAC. Its on-chip precision out-

put amplifier allows rail-to-rail output swing to be

•

+2.7 V to +5.5 V Analog Power Supply

•

12-Bit Monotonic

wire serial interface supporting high-speed interface

•

mode with address support of up to sixteen DAC7573s

for a total of 64 channels on the bus.

•

Data Transmit Capability

•

On-Chip Output Buffer Amplifier, Rail-to-Rail

The DAC7573 requires an external reference voltage

Operation

to set the output range of the DAC. The DAC7573

•

Double-Buffered Input Register

incorporates a power-on-reset circuit that ensures that

the DAC output powers up at zero volts and remains

•

Address Support for up to Sixteen DAC7573s

there until a valid write takes place to the device. The

•

Synchronous Update Support for up to 64

DAC7573 contains a power-down feature, accessed

Channels

via the internal control register, that reduces the current

•

Operation From -40

°C to 105°C

consumption of the device to 200 nA at 5 V.

•

Small 16 Lead TSSOP Package

The low power consumption of this part in normal

operation makes it ideally suited to portable battery

APPLICATIONS

operated equipment. The power consumption is less

•

Process Control

mode.

•

Data Acquisition Systems

The DAC7573 is available in a 16-lead TSSOP pack-

•

Closed-Loop Servo Control

age.

•

PC Peripherals

•

Portable Instrumentation

I2C is a trademark of Philips Corporation.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2003, Texas Instruments Incorporated

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily in-

clude testing of all parameters.