一般描述
Analog Devices AD8422 是一款高精密、低功耗、低噪声轨到轨仪表放大器。Analog Devices AD8422以超低失真性能处理信号，在整个输出范围内负载不影响性能。AD8422具有极低的偏置电流，高源阻抗时不会产生误差，允许多个传感器多路复用至输入端。低电压噪声和低电流噪声特性使AD8422成为测量惠斯登电桥的理想选择。AD8422具有鲁棒的输入保护，能够确保稳定性，并且不牺牲噪声性能。AD8422具有高ESD抑制能力和针对来自相反供电轨、高达40V的连续电压输入保护。通过一个电阻可将增益设置为1至1000。基准引脚可用来向输出电压施加精确失调。AD8422的额定工作温度范围为 −40℃至+85℃，可在高达125℃时保证典型性能曲线。共有8引脚MSOP和8引脚SOIC两种封装。
The AD8422 uses robust input protection that ensures reliability without sacrificing noise performance. The AD8422 has high ESD immunity, and the inputs are protected from continuous voltages up to 40 V from the opposite supply rail. A single resistor sets the gain from 1 to 1000. The reference pin can be used to apply a precise offset to the output voltage. The AD8422 is specified from −40°C to +85°C and has typical performance curves to 125°C. It is available in 8-lead MSOP and 8-lead SOIC packages.
参数
Mouser编号：584-AD8422ARZ-R7
制造商编号：AD8422ARZ-R7
制造商：Analog Devices
说明：仪表放大器 High Performance InAmp
制造商: Analog Devices Inc.
产品种类: 仪表放大器
系列: AD8422
通道数量: 1 Channel
3dB带宽: 2.2 MHz
SR - 转换速率 : 800 mV/us
CMRR - 共模抑制比: 86 dB
Ib - 输入偏流: 1 nA
Vos - 输入偏置电压 : 60 uV
电源电压-最大: 36 V
电源电压-最小: 4.6 V
工作电源电流: 300 uA
最小工作温度: - 40 C
最大工作温度: + 85 C
安装风格: SMD/SMT
封装 / 箱体: SOIC-8
封装: Reel
封装: Cut Tape
封装: MouseReel
放大器类型: Instrumentation Amplifier
带宽: 2.2 MHz
商标: Analog Devices
双重电源电压: +/- 1.8 V to +/- 2.3 V
增益V/V: 1 V/V to 1000 V/V
工作电源电压: 4.6 V to 36 V
每个通道的输出电流: 20 mA
输出类型: Rail-to-Rail
产品: Instrumentation Amplifiers
产品类型: Instrumentation Amplifiers
关闭: No Shutdown
工厂包装数量: 1000
子类别: Amplifier ICs
单位重量: 540 mg
特性
330μA maximum quiescent current
Rail-to-rail output
Low noise and distortion
8nV/√Hz maximum input voltage noise at 1kHz
0.15μV p-p RTI noise (G=100)
0.5ppm nonlinearity with 2kΩ load (G = 1)
Excellent ac specifications
80dB minimum CMRR at 7kHz (G = 1)
2.2MHz bandwidth (G = 1)
High precision dc performance (AD8422BRZ)
150dB minimum CMRR (G = 1000)
0.04% maximum gain error (G = 1000)
0.3μV/°C maximum input offset drift
0.5nA maximum input bias current
Wide supply range
3.6V to 36V single supply
±1.8V to ±18V dual supply
40V from opposite supply Input overvoltage protection
1 to 1000 Gain range
应用
Medical instrumentation
Industrial process controls
Strain gauges
Transducer interfaces
Precision data acquisition systems
Channel-isolated systems
Portable instrumentation
