DESCRIPTION

The ADS7852 is an 8-channel, 12-bit Analog-to-Digital

(A/D) converter complete with sample-and-hold, internal 2.5V

reference and a full 12-bit parallel output interface. Typical

power dissipation is 13mW at 500kHz throughput rate. The

ADS7852 features both a nap mode and a sleep mode, further

reducing the power consumption to 2mW. The input range is

from 0V to twice the reference voltage. The reference voltage

can be overdriven by an external voltage.

The ADS7852 is ideal for multi-channel applications where

low power and small size are critical. Medical instrumenta-

tion, high-speed data acquisition and laboratory equipment

are just a few of the applications that would take advantage of

the special features offered by the ADS7852. The ADS7852

is available in an TQFP-32 package and is fully specified and

ensured over the –40

°C to +85°C temperature range.

12-Bit, 8-Channel, Parallel Output

ANALOG-TO-DIGITAL CONVERTER

FEATURES

q 2.5V INTERNAL REFERENCE

q 8 INPUT CHANNELS

q 500kHz SAMPLING RATE

q SINGLE 5V SUPPLY

q

q NO MISSING CODES

q 70dB SINAD

q LOW POWER: 13mW

q TQFP-32 PACKAGE

APPLICATIONS

q DATA ACQUISITION

q TEST AND MEASUREMENT

q INDUSTRIAL PROCESS CONTROL

q MEDICAL INSTRUMENTS

ADS7

852

®

SAR

CDAC

ADS7852

Output

Latches

and

3-State

Drivers

Comparator

CLK

BUSY

WR

CS

RD

A0

A1

A2

8-Channel

MUX

Internal

+2.5V Ref

Buffer

V

REF

10k

Ω

AIN0

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

AIN7

3-State

Parallel

Data Bus

ADS7852

SBAS111C – JANUARY 1998 – REVISED JULY 2004

www.ti.com

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.

Copyright © 1998-2004, Texas Instruments Incorporated

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.

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