ADS1251UG4集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS1251UG4属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS1251UG4模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。

FEATURES

24 BITS—NO MISSING CODES

19 BITS EFFECTIVE RESOLUTION UP TO

20kHz DATA RATE

LOW NOISE: 1.5ppm

DIFFERENTIAL INPUTS

INL: 15ppm (max)

EXTERNAL REFERENCE (0.5V to 5V)

POWER-DOWN MODE

SYNC MODE

LOW POWER: 8mW at 20kHz

5mW at 10kHz

APPLICATIONS

CARDIAC DIAGNOSTICS

DIRECT THERMOCOUPLE INTERFACES

BLOOD ANALYSIS

INFRARED PYROMETERS

LIQUID/GAS CHROMATOGRAPHY

PRECISION PROCESS CONTROL

DESCRIPTION

The ADS1251 is a precision, wide dynamic range, deltasigma,

Analog-to-Digital (A/D) converter with 24-bit resolution

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.

The ADS1251 is designed for high-resolution measurement

applications in cardiac diagnostics, smart transmitters, industrial

process control, weigh scales, chromatography, and

portable instrumentation. The converter includes a flexible,

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

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).