SAR

Control

D

OUT

Comparator

S/H Amp

CS/SHDN

DCLOCK

+In

V

REF

–In

CDAC

Serial

Interface

ADS7826

ADS7827

ADS7829

SLAS388 – JUNE 2003

10/8/12-BIT HIGH SPEED 2.7 V microPOWER™ SAMPLING

ANALOG-TO-DIGITAL CONVERTER

FEATURES

DESCRIPTION

•

High Throughput at Low Supply Voltage

The ADS7826/27/29 is a family of 10/8/12-bit sampling

analog-to-digital converters (A/D) with assured specifi-

– ADS7829: 12-bit 125 KSPS

cations at 2.7-V supply voltage. It requires very little

– ADS7826: 10-bit 200 KSPS

power even when operating at the full sample rate. At

– ADS7827: 8-bit 250 KSPS

lower conversion rates, the high speed of the device

enables it to spend most of its time in the power down

•

Very Wide Operating Supply VoltageL:

mode— the power dissipation is less than 60 µW at 7.5

2.7 V to 5.25 V (as Low as 2.0 V With Reduced

kHz.

Performance)

The ADS7826/27/29 also features operation from 2.0 V

•

Rail-to-Rail, Pseudo Differential Input

to 5 V, a synchronous serial interface, and a differential

•

input. The reference voltage can be set to any level

•

Micropower Auto Power-Down:

Ultra-low power and small package size make the

ADS7826/27/29 family ideal for battery operated sys-

•

Low Power Down Current: 3 µA Max

tems. It is also a perfect fit for remote data acquisition

•

Ultra Small Chip Scale Package:

modules, simultaneous multichannel systems, and iso-

8-pin 3 x 3 PDSO (SON, Same Size as QFN)

lated data acquisition. The ADS7826/27/29 family is

available in a 3 x 3 8-pin PDSO (SON, same size as

•

SPI™ Compatible Serial Interface

QFN) package.

APPLICATIONS

•

Battery Operated Systems

•

Remote Data Acquisition

•

Isolated Data Acquisition

•

Simultaneous Sampling, Multichannel

Systems

microPOWER is a trademark of Texas Instruments.

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.