Datasheet > ADS1251_14

ADS1251_14

更新时间： 2024-11-06 02:58:51

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德州仪器 - TI		/
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描述
24-Bit, 20kHz, Low-Power ANALOG-TO-DIGITAL CONVERTER

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ADS1251_14 数据手册

ADS1251

SBAS184D – MARCH 2001 – REVISED JUNE 2009

24-Bit, 20kHz, Low-Power

ANALOG-TO-DIGITAL CONVERTER

DESCRIPTION

FEATURES

The ADS1251 is a precision, wide dynamic range, delta-

sigma, Analog-to-Digital (A/D) converter with 24-bit resolu-

tion operating from a single +5V supply. The delta-sigma

architecture features wide dynamic range, and 24 bits of no

missing code performance. Effective resolution of 19 bits

(1.5ppm of rms noise) is achieved at conversion rates up to

20kHz.

● 24 BITS—NO MISSING CODES

● 19 BITS EFFECTIVE RESOLUTION UP TO

20kHz DATA RATE

● LOW NOISE: 1.5ppm

● DIFFERENTIAL INPUTS

● INL: 15ppm (max)

The ADS1251 is designed for high-resolution measurement

applications in cardiac diagnostics, smart transmitters, indus-

trial process control, weigh scales, chromatography, and

portable instrumentation. The converter includes a flexible,

2-wire synchronous serial interface for low-cost isolation.

● EXTERNAL REFERENCE (0.5V to 5V)

● POWER-DOWN MODE

● SYNC MODE

● LOW POWER: 8mW at 20kHz

5mW at 10kHz

The ADS1251 is a single-channel converter and is offered in

an SO-8 package. It is pin-compatible with the faster ADS1252

(41.7kHz data rate).

APPLICATIONS

● CARDIAC DIAGNOSTICS

● DIRECT THERMOCOUPLE INTERFACES

● BLOOD ANALYSIS

● INFRARED PYROMETERS

● LIQUID/GAS CHROMATOGRAPHY

● PRECISION PROCESS CONTROL

ADS1251

V_REF

CLK

+V_IN

4th-Order

∆Σ

Modulator

SCLK

Serial

Digital

Filter

Interface

DOUT/DRDY

–V_IN

+V_DD

GND

Control

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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