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

CLK

DGND

MSB

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

DACB

Register

R

R

Power-On

Reset

R

R

DAC A

DACB

CS

RS

LDAC

DAC8802

SBAS351B – AUGUST 2005 – REVISED FEBRUARY 2007

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

• Relative Accuracy: 1 LSB Max

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

digital-to-analog

converter

(DAC)

designed

to

• Differential Nonlinearity: 1 LSB Max

operate from a single 2.7 V to 5.5 V supply.

• 2-mA Full-Scale Current ±20%,

with VREF = ±10 V

The applied external reference input voltage VREF

determines the full-scale output current. An internal

• 0.5 µs Settling Time

feedback

resistor

(RFB)

provides

temperature

• Midscale or Zero-Scale Reset

tracking for the full-scale output when combined with

• Separate 4Q Multiplying Reference Inputs

an 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

compatible inputs using serial data in (SDI), clock

• SPI™-Compatible 3-Wire Interface:

(CLK),

and

a

chip-select

(CS).

A

common

50 MHz

level-sensitive load DAC strobe (LDAC) input allows

• Double Buffered Registers to Enable

simultaneous update of

all

DAC

outputs

from

Simultaneous Multichannel Update

previously loaded input registers. Additionally, an

internal power-on reset forces the output voltage to

• Internal Power-On Reset

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

• Industry-Standard Pin Configuration

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 other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005–2007, 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.