AD7191BRUZ-REEL集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

AD7191BRUZ-REEL属于集成电路（IC）的模数转换器（ADC）。由亚德诺半导体技术有限公司制造生产的AD7191BRUZ-REEL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。

GENERAL DESCRIPTION

The AD7191 is a low noise, complete analog front end for high precision measurement applications. It contains a low noise, 24-bit sigma-delta (Σ-Δ) ADC. The on-chip low noise gain stage means that signals of small amplitude can be interfaced directly to the ADC. It contains two differential analog inputs. The part also includes a temperature sensor that can be used for temperature compensation.

FEATURES

Pin-programmable output rate

Output data rate: 10 Hz, 50 Hz, 60 Hz, 120 Hz

Pin-programmable PGA

Gain: 1, 8, 64, 128

Pin-programmable power-down and reset

RMS noise: 15 nV @ 10 Hz (gain = 128)

Up to 21.5 noise free bits (gain = 1)

Internal or external clock

Bridge power-down switch

Offset drift: 5 nV/°C

Gain drift: 1 ppm/°C

Specified drift over time

Simultaneous 50 Hz/60 Hz rejection

Internal temperature sensor

Power supply: 3 V to 5.25 V

Current: 4.35 mA

Temperature range: –40°C to +105°C

Package: 24-lead TSSOP

INTERFACE

2-wire serial

SPI, QSPI™, and MICROWIRE™ compatible

Schmitt trigger on SCLK

APPLICATIONS

Weigh scales

Strain gauge transducers

Pressure measurement

Medical and scientific instrumentation