Quad Channel, Low Power, 16-Bit, Serial Input

DIGITAL-TO-ANALOG CONVERTER

APPLICATIONS

q PORTABLE INSTRUMENTATION

q CLOSED-LOOP SERVO-CONTROL

q PROCESS CONTROL

q DATA ACQUISITION SYSTEMS

q PROGRAMMABLE ATTENUATION

q PC PERIPHERALS

DESCRIPTION

The DAC8534 is a quad channel, 16-bit Digital-to-Analog

Converter (DAC) offering low-power operation and a flexible

serial host interface. Each on-chip precision output amplifier

allows rail-to-rail output swing to be achieved over the supply

range of 2.7V to 5.5V. The device supports a standard 3-wire

serial interface capable of operating with input data clock

The DAC8534 requires an external reference voltage to set

the output range of each DAC channel. Also incorporated

into the device is a power-on reset circuit which ensures that

the DAC outputs power up at zero-scale and remain there

until a valid write takes place. The DAC8534 provides a per

channel power-down feature, accessed over the serial inter-

face, that reduces the current consumption to 200nA per

channel at 5V.

The low-power consumption of this device in normal opera-

tion makes it ideally suited to portable battery-operated

equipment and other low-power applications. The power

consumption is 5mW at 5V, reducing to 4

µW in power-down

mode.

The DAC8534 is available in a TSSOP-16 package with a

specified operating temperature range of –40

°C to +105°C.

FEATURES

q POWER SUPPLY: +2.7V to +5.5V

q microPOWER OPERATION: 950

q 16-BIT MONOTONIC OVER TEMPERATURE

q SETTLING TIME: 10

q ULTRA-LOW AC CROSSTALK: –100dB typ

q POWER-ON RESET TO ZERO-SCALE

q ON-CHIP OUTPUT BUFFER AMPLIFIER WITH

RAIL-TO-RAIL OPERATION

q DOUBLE BUFFERED INPUT ARCHITECTURE

q SIMULTANEOUS OR SEQUENTIAL OUTPUT

UPDATE AND POWER-DOWN

q 16 CHANNEL BROADCAST CAPABILITY

q SCHMITT-TRIGGERED INPUTS

q TSSOP-16 PACKAGE

DAC8534

SBAS254D – SEPTEMBER 2002 – REVISED MARCH 2004

www.ti.com

Copyright © 2002-2004, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Buffer

Control

Register

Control

8

Data

Buffer D

DAC

Register D

18

DAC D

Power-Down

Control Logic

24-Bit

Serial-to-

Parallel

Shift

Register

Resistor

Network

AV

DD

IOV

DD

GND

V

V

V

V

Data

Buffer A

DAC

Register A

DAC A

V

SYNC

SCLK

D

IN

A0

A1

LDAC ENABLE

V

®

DAC8

534

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.

PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.