Texas Instruments ADS7842 Data Sheet Manual

ADS7842

ADS7842

SBAS103B – SEPTEMBER 2000 – REVISED MAY 2002

12-Bit, 4-Channel Parallel Output Sampling ANALOG-TO-DIGITAL CONVERTER

FEATURES DESCRIPTION

SINGLE SUPPLY: 2.7V to 5V

The ADS7842 is a complete, 4-channel, 12-bit Analog-to- 4-CHANNEL INPUT MULTIPLEXER Digital Converter (ADC). It contains a 12-bit, capacitor- based, Successive Approximation Register (SAR) ADC with

UP TO 200k Hz SAMPLING RATE

a sample-and-hold amplifier, interface for microprocessor

FULL 12-BIT PARALLEL INTERFACE

use, and parallel, 3-state output drivers. The ADS7842 is ±1LSB INL AND DNL specified at a 200k Hz sampling rate while dissipating only 2m W of power. The reference voltage can be varied from

NO MISSING CODES

100m V to VCC with a corresponding LSB resolution from

72d B SINAD

24µV to 1.22m V. The ADS7842 is tested down to 2.7V

LOW POWER: 2m W

operation.

SSOP-28 PACKAGE

Low power, high speed, and an onboard multiplexer make the ADS7842 ideal for battery-operated systems such as portable, multi-channel dataloggers and measurement equip-

APPLICATIONS

ment. The ADS7842 is available in an SSOP-28 package

DATA ACQUISITION

and is tested over the –40°C to +85°C temperature range.

TEST AND MEASUREMENT INDUSTRIAL PROCESS CONTROL MEDICAL INSTRUMENTS LABORATORY EQUIPMENT

ADS7842 3-State

4-Channel Parallel

MUX Data Bus

Output

Latches

CDAC CLK

3-State BUSY

Drivers

Comparator

VREF CS

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 © 2000, Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

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