仪表放大器 Zero Drift Digitally Programmable
Product Details
The AD8231 is a low drift, rail-to-rail, instrumentation amplifier with software-programmable gains of 1, 2, 4, 8, 16, 32, 64, or 128. The gains are programmed via digital logic or pin strapping.
The AD8231 is ideal for applications that require precision performance over a wide temperature range, such as industrial temperature sensing and data logging. Because the gain setting resistors are internal, maximum gain drift is only 10 ppm/°C for gains of 1 to 32. Because of the auto-zero input stage, maximum input offset is 15 μV and maximum input offset drift is just 50 nV/°C. CMRR is 80 dB for G = 1, increasing to 110 dB at higher gains.
The AD8231 also includes an uncommitted op amp that can be used for additional gain, differential signal driving, or filtering. Like the in-amp, the op amp has an auto-zero architecture, rail-to-rail input, and rail-to-rail output.
The AD8231 includes a shutdown feature that reduces current to a maximum of 1 μA. In shutdown, both amplifiers also have a high output impedance, which allows easy multiplexing of multiple amplifiers without additional switches.
The AD8231 is specified over the extended industrial tempera-ture range of −40°C to +125°C. It is available in a 4 mm × 4 mm 16-lead LFCSP.
**Applications**
### Features and Benefits
AD8231-EP supports defense and aerospace applications AQEC standard
供电电流 4 mA
电路数 2
共模抑制比 100 dB
带宽 700 kHz
增益频宽积 7 MHz
输入补偿电压 4 µV
输入偏置电流 250 pA
工作温度Max 125 ℃
工作温度Min -40 ℃
增益带宽 7 MHz
共模抑制比Min 80 dB
电源电压Max 5V ~ 7V
安装方式 Surface Mount
引脚数 16
封装 VQFN-16
长度 4 mm
宽度 4 mm
高度 0.83 mm
封装 VQFN-16
工作温度 -55℃ ~ 125℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Contains Lead
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
AD8231TCPZ-EP-R7 ADI 亚德诺 | 当前型号 | 当前型号 |
AD8231WACPZ-RL 亚德诺 | 完全替代 | AD8231TCPZ-EP-R7和AD8231WACPZ-RL的区别 |
AD8231ACPZ-RL 亚德诺 | 完全替代 | AD8231TCPZ-EP-R7和AD8231ACPZ-RL的区别 |
AD8231ACPZ-R7 亚德诺 | 功能相似 | AD8231TCPZ-EP-R7和AD8231ACPZ-R7的区别 |