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FEATURES

DESCRIPTION

APPLICATIONS

16

DAC

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

A0

A1

EN

A

B

C

D

2:4

Decode

SDO

SDI

CS

CLK

DGND

RS

MSB

LDAC

A B C D

Input

Register

R

Input

Register

R

Input

Register

R

Input

Register

R

Power-on

Reset

DAC A

Register

R

DAC B

Register

R

DAC C

Register

R

DAC D

Register

R

DAC A

DAC B

DAC C

DAC D

DAC8814

SBAS338 – JANUARY 2005

Quad, Serial Input 16-Bit Multiplying Digital-to-Analog Converter

•

Relative Accuracy: 1 LSB Max

The DAC8814 is a quad, 16-bit, current-output digi-

•

Differential Nonlinearity: 1 LSB Max

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

from a single +2.7 V to 5.0 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

•

Four Separate 4Q Multiplying Reference

external I-to-V precision amplifier.

Inputs

A doubled buffered serial data interface offers

•

Reference Bandwidth: 10 MHz

high-speed, 3-wire, SPI and microcontroller compat-

•

Reference Dynamics: -105 dB THD

ible inputs using serial data in (SDI), clock (CLK), and

•

SPI™-Compatible 3-Wire Interface:

a chip-select (CS). In addition, a serial data out pin

50 MHz

(SDO) allows for daisy-chaining when multiple pack-

•

Double Buffered Registers Enable

ages are used. A common level-sensitive load DAC

strobe (LDAC) input allows simultaneous update of all

•

Simultaneous Multichannel Change

DAC outputs from previously loaded input registers.

•

Internal Power On Reset

Additionally, an internal power on reset forces the

•

Industry-standard Pin Configuration

output voltage to zero at system turn on. An MSB pin

allows system reset assertion (RS) to force all regis-

ters to zero code when MSB = 0, or to half-scale

code when MSB = 1.

•

Automatic Test Equipment

•

Instrumentation

The DAC8814 is available in an SSOP package.

•

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.

PRODUCT PREVIEW information concerns products in the forma-

Copyright © 2005, Texas Instruments Incorporated

tive or design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the

right to change or discontinue these products without notice.