引脚可编程,超低噪声, 24位Σ-Δ型ADC,用于桥式传感器 Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors
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
电路数 1
通道数 3
位数 24
耗散功率 22.5 mW
分辨率Bits 24.0
模数转换数ADC 1
输入数 2
工作温度Max 105 ℃
工作温度Min -40 ℃
耗散功率Max 22.5 mW
输入通道数 2
安装方式 Surface Mount
引脚数 24
封装 TSSOP-24
长度 7.8 mm
宽度 4.4 mm
高度 1.05 mm
封装 TSSOP-24
工作温度 -40℃ ~ 105℃
产品生命周期 Active
包装方式 Tape & Reel TR
制造应用 ECG Patient Monitoring, Life Sciences & Medical Instrumentation, Clinical Monitoring, Spectrometer, Healthcare
RoHS标准 RoHS Compliant
含铅标准 Lead Free
军工级 No
ECCN代码 ECL99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
AD7191BRUZ-REEL ADI 亚德诺 | 当前型号 | 当前型号 |
AD7191BRUZ 亚德诺 | 类似代替 | AD7191BRUZ-REEL和AD7191BRUZ的区别 |