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MAX4194, MAX4195, MAX4196, MAX4197
微功耗、单电源、满摆幅、精密仪表放大器


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状况:生产中。

概述
完整的数据资料 (PDF, 728kB)
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The MAX4194 is a variable-gain precision instrumentation amplifier that combines Rail-to-Rail; single-supply operation, outstanding precision specifications, and a high gain bandwidth. This amplifier is also offered in three fixed-gain versions: the MAX4195 (G = +1V/V), the MAX4196 (G = +10V/V), and the MAX4197 (G = +100V/V). The fixed-gain instrumentation amplifiers feature a shutdown function that reduces the quiescent current to 8µA. A traditional three operational amplifier configuration is used to achieve maximum DC precision.

The MAX4194–MAX4197 have rail-to-rail outputs and inputs that can swing to 200mV below the negative rail and to within 1.1V of the positive rail. All parts draw only 93µA and operate from a single +2.7V to +7.5V supply or from dual ±1.35V to ±3.75V supplies. These amplifiers are offered in 8-pin SO packages and are specified for the extended temperature range (-40°C to +85°C).

See the MAX4198/MAX4199 data sheet for single-supply, precision differential amplifiers.

关键特性   应用/使用
  • +2.7V Single-Supply Operation
  • Low Power Consumption
    • 93µA Supply Current
    • 8µA Shutdown Current (MAX4195/MAX4196/MAX4197)
  • High Common-Mode Rejection: 115dB (G = +10V/V)
  • Input Common-Mode Range Extends 200mV Below GND
  • Low 50µV Input Offset Voltage (G ≥ +100V/V)
  • Low ±0.01% Gain Error (G = +1V/V)
  • 250kHz -3dB Bandwidth (G = +1V/V, MAX4194)
  • Rail-to-Rail Outputs

 
  • 4mA至20mA环变送器
  • 电池供电/便携式设备
  • 桥式放大器
  • 数据采集系统
  • 医疗装置
  • 热电偶放大器
  • 变送器接口

    Key Specifications:  Differential/Instrumentation Amplifiers
    Part Number Architecture Amps. VCMVR Rail to Rail AV
    (V/V)
    VSUPPLY (Total)
    (V)
    VSUPPLY (Total)
    (V)
    ICC per Amp.
    (mA)
    ICC per Amp.
    (mA)
    VOS
    (µV)
    CMRR @DC
    (dB)
    PSRR @DC
    (dB)
    Input IBIAS
    (nA)
    Unity Gain BW
    (MHz)
    VCMVR
    (V)
    Price
    to Neg. Rail min max typ max max typ typ max typ See Notes
    MAX4194  Classic 3 Op. Amp. 1 No Output Only 1 to 10000 2.7 7.5 0.093 0.11 450 115 120 20 0.25 VEE+0.2 to VCC-1.1 $1.69 @1k
    MAX4195  1 95 0.22 VEE-0.2 to VCC-1.1 $1.69 @1k
    MAX4196  10 115 0.34 VEE+0.2 to VCC-1.1 $1.69 @1k
    MAX4197  100 115 0.003 VEE+0.2 to VCC-1.1 $1.69 @1k
    查看所有Differential/Instrumentation Amplifiers (15)

    图表
    MAX4194、MAX4195、MAX4196、MAX4197:引脚配置
    引脚配置

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    参考文献: 19-1468; Rev. 1; 2003-10-27
    本页最后一次更新: 2009-09-07


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