DAC8802

www.ti.com

FEATURES

DESCRIPTION

APPLICATIONS

14

DAC

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

A0

A1

EN

A

B

Decode

SDI

CS

CLK

DGND

RS

MSB

LDAC

R A

FB

V

A B

REF

R B

FB

I

A

OUT

A

A

GND

A

B

GND

I

B

OUT

Input

Register

Input

Register

DAC A

Register

DAC B

Register

R

R

Power-On

Reset

R

R

DAC A

DAC B

DAC8802

SBAS351A – AUGUST 2005 – REVISED DECEMBER 2005

Dual, Serial Input 14-Bit Multiplying Digital-to-Analog Converter

•

Relative Accuracy: 1 LSB Max

The DAC8802 is a dual, 14-bit, current-output

•

Differential Nonlinearity: 1 LSB Max

digital-to-analog converter (DAC) designed to operate

from a single +2.7 V to 5.5 V supply.

•

2-mA Full-Scale Current

±20%,

•

0.5

µs Settling Time

determines the full-scale output current. An internal

•

Midscale or Zero-Scale Reset

for the full-scale output when combined with an

•

Separate 4Q Multiplying Reference Inputs

external I-to-V precision amplifier.

•

Reference Bandwidth: 10 MHz

A

doubled-buffered,

serial

data

interface

offers

•

Reference Dynamics: –105 dB THD

high-speed,

3-wire,

SPI

and

microcontroller

•

SPI™-Compatible 3-Wire Interface:

compatible inputs using serial data in (SDI), clock

50 MHz

(CLK),

and

a

chip-select

(CS).

A

common

•

Double Buffered Registers Enable

level-sensitive load DAC strobe (LDAC) input allows

simultaneous

update

of

all

DAC

outputs

from

•

Simultaneous Multichannel Change

previously loaded input registers. Additionally, an

•

Internal Power-On Reset

internal power-on reset forces the output voltage to

•

Industry-Standard Pin Configuration

zero at system turn-on. An MSB pin allows system

reset assertion (RS) to force all registers to zero code

when MSB = 0, or to half-scale code when MSB = 1.

•

Automatic Test Equipment

The DAC8802 is available in an TSSOP-16 package.

•

Instrumentation

•

Digitally Controlled Calibration

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.

SPI is a trademark of Motorola, Inc.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.