英语翻译FEATURESLow input currents10 pA maximum input bias curre

英语翻译
FEATURES
Low input currents
10 pA maximum input bias current (B grade)
0.6 pA maximum input offset current (B grade)
High CMRR
100 dB CMRR (minimum),G = 10 (B grade)
80 dB CMRR (minimum) to 5 kHz,G = 1 (B grade)
Excellent ac specifications and low power
1.5 MHz bandwidth (G = 1)
14 nV/√Hz input noise (1 kHz)
Slew rate 2 V/μs
750 μA quiescent supply current (maximum)
Versatile
MSOP package
Rail-to-rail output
Input voltage range to below negative supply rail
4 kV ESD protection
4.5 V to 36 V single supply
±2.25 V to ±18 V dual supply
Gain set with single resistor (G = 1 to 1000)
APPLICATIONS
Medical instrumentation
Precision data acquisition
Transducer interface
GENERAL DESCRIPTION
The AD8220 is the first single-supply JFET input instrumentation amplifier available in an MSOP package.Designed to meet the needs of high performance,portable instrumentation,the AD8220 has a minimum common-mode rejection ratio (CMRR) of 86 dB at dc and a minimum CMRR of 80 dB at 5 kHz for G = 1.Maximum input bias current is 10 pA and typically remains below 300 pA over the entire industrial temperature range.Despite the JFET inputs,the AD8220 typically has a noise corner of only 10 Hz.
With the proliferation of mixed-signal processing,the number of power supplies required in each system has grown.The AD8220 is designed to alleviate this problem.The AD8220 can operate on a ±18 V dual supply,as well as on a single +5 V supply.Its rail-to-rail output stage maximizes dynamic range on the low voltage supplies common in portable applications.Its ability to run on a single 5 V supply eliminates the need to use higher voltage,dual supplies.The AD8220 draws a maximum of 750 μA of quiescent current,making it ideal for battery-powered devices.
Gain is set from 1 to 1000 with a single resistor.Increasing the gain increases the common-mode rejection.Measurements that need higher CMRR when reading small signals benefit when the AD8220 is set for large gains.
A reference pin allows the user to offset the output voltage.This feature is useful when interfacing with analog-to-digital converters.
The AD8220 is available in an MSOP that takes roughly half the board area of an SOIC.Performance is specified over the industrial temperature range of 40°C to +85°C.（请准确翻译）
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特征
输入电流低
最大输入偏置电流10 pA (B级)
最大补偿电流0.6 pA(B级)
共态抑制比
G=10时,共态抑制比最小100dB(B级)
G=1时,5kHz时共态抑制比最小80dB(B级)
交流特性好,耗能低
带宽1.5 MHz (G = 1时)
输入噪声14 nV/√Hz(1 kHz时)
回转速率2 V/μs
最大供应静态电流750 μA
通用
MSOP封装
Rail-to-rail输出
输入电压振幅低于负供应电压
静电保护4 kV
单一供应电压4.5 V～36 V
双重供应电压±2.25 V ～ ±18 V
单电阻增益(G = 1 to 1000)
应用
医用仪器
获取精密数据
传感器界面

概括描述
第一个单供JFET输入放大器采用MSOP封装的AD8220.根据高性能、便携性仪器的需要设计,AD8220 的最小直流共态抑制比86dB,G=1、5kHz时交流共态抑制比80dB.最大输入偏置电流10pA,工业温度范围内代表值低于300pA.不论JFET输入多少,AD8220仅有10Hz的噪声角.由于混合信号处理的增强效应,各个系统需要的能量需求增加.AD8220是为了减轻这个问题设计的.AD8220可以在±18 V双电压供应或+5 V 电压供应.它的rail-to-rail输出在便携设备低电压供应下获得最大动态范围.在没有双电压供应时能在单边5V电压下工作.AD8220最大静态电流750μA,对电池供电的设备来说很理想.
单电阻时增益1～1000.增益增大会增加 common-mode rejection.需要更高共态抑制比的测量 当AD8220设为大增益时有益于阅读小信号.相关针脚允许用户补偿输出电压.这个特征有利于模数转换器界面.MSOP封装的AD8220使SOIC面板面积减少约一半.可工作于工业温度范围?40°C到85°C.