®

DAC853

4

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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

DAC8574

SLAS377A – JANUARY 2003 – REVISED JUNE 2003

QUAD, 16-BIT, LOW-POWER, VOLTAGE OUTPUT,

FEATURES

DESCRIPTION

•

The DAC8574 is a low-power, quad channel, 16-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

•

16-Bit Monotonic

wire serial interface supporting high-speed interface

•

Settling Time: 10µs to

±0.003% FSR

mode with address support of up to sixteen DAC8574’s

•

for a total of 64 channels on the bus.

•

Data Transmit Capability

The DAC8574 requires an external reference voltage

•

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

to set the output range of the DAC. The DAC8574

Operation

incorporates a power-on-reset circuit that ensures that

the DAC output powers up at zero volts and remains

•

Double-Buffered Input Register

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

•

Address Support for up to Sixteen DAC8574s

DAC8574 contains a power-down feature, accessed

•

Synchronous Update Support for up to 64

via the internal control register, that reduces the current

Channels

consumption of the device to 200 nA at 5 V.

•

Operation From -40

°C to 105°C

The low power consumption of this part in normal

•

Small 16 Lead TSSOP Package

operation makes it ideally suited to portable battery

operated equipment. The power consumption is less

APPLICATIONS

power-down mode.

•

Process Control

The DAC8574 is available in a 16-lead TSSOP pack-

•

Data Acquisition Systems

age.

•

Closed-Loop Servo Control

•

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.