Datasheet > ADS7842

ADS7842

更新时间： 2024-11-26 02:58:51

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德州仪器 - TI		/
页数	文件大小	规格书
20页	864K
描述
ANALOG-TO-DIGITAL CONVERTER

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ADS7842 数据手册

ADS7842

SBAS103C – SEPTEMBER 2000 – REVISED OCTOBER 2006

12-Bit, 4-Channel Parallel Output Sampling

ANALOG-TO-DIGITAL CONVERTER

DESCRIPTION

FEATURES

ꢀ SINGLE SUPPLY: 2.7V to 5V

ꢀ 4-CHANNEL INPUT MULTIPLEXER

ꢀ UP TO 200kHz SAMPLING RATE

ꢀ FULL 12-BIT PARALLEL INTERFACE

ꢀ ±1LSB INL AND DNL

The ADS7842 is a complete, 4-channel, 12-bit Analog-to-

Digital Converter (ADC). It contains a 12-bit, capacitor-

based, Successive Approximation Register (SAR) ADC with

a sample-and-hold amplifier, interface for microprocessor

use, and parallel, 3-state output drivers. The ADS7842 is

specified at a 200kHz sampling rate while dissipating only

2mW of power. The reference voltage can be varied from

100mV to V_CCwith a corresponding LSB resolution from

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

operation.

ꢀ NO MISSING CODES

ꢀ 72dB SINAD

ꢀ LOW POWER: 2mW

ꢀ 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-

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

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

APPLICATIONS

ꢀ DATA ACQUISITION

ꢀ TEST AND MEASUREMENT

ꢀ INDUSTRIAL PROCESS CONTROL

ꢀ MEDICAL INSTRUMENTS

ꢀ LABORATORY EQUIPMENT

SAR

AIN0

AIN1

AIN2

AIN3

ADS7842

3-State

Parallel

Data Bus

4-Channel

MUX

Output

Latches

and

3-State

Drivers

CDAC

CLK

BUSY

Comparator

V_REF

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.

All trademarks are the property of their respective owners.

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.

www.ti.com

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