AD7191BRUZ: Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors
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.
For ease-of-use, all the features of the AD7191 are controlled by dedicated pins. The on-chip PGA has a gain of 1, 8, 64, or 128, supporting a full-scale differential input of ±5 V, ±625 mV, ±78 mV, or ±39 mV. The output data rate can be programmed to 10 Hz, 50 Hz, 60 Hz, or 120 Hz. Simultaneous 50 Hz and 60 Hz rejection is obtained when the output data rate is set to 10 Hz or 50 Hz; 60 Hz only rejection is obtained when the output data rate is set to 60 Hz. The AD7191 can be operated with the internal clock, or an external clock can be used.
The part operates with a power supply of 3 V to 5.25 V. It consumes a current of 4.35 mA. It is available in a 24-lead TSSOP package
Applications
- Weigh scales
- Strain gauge transducers
- Pressure measurement
- Medical and scientific instrumentation
AD7191BRUZ 特点
- 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)
- Please see data sheet for additional features
AD7191BRUZ 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7191BRUZ | 量产 | 24 ld TSSOP | 24 | 工业 |
| AD7191BRUZ-REEL | 量产 | 24 ld TSSOP | 24 | 工业 |
AD7191BRUZ 应用技术支持与电子电路设计开发资源下载
- AD7191 数据手册DataSheet下载 . pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
- ADC模数转换器选型指南 . pdf
