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微功耗、单电源、满摆幅、精密仪表放大器

产品详情

主要特征

应用/用途

Parametric specs for Instrumentation/Difference Amplifiers
Architecture Classic 3 Op. Amp.
# Amplifiers 1
VCMVR (to Neg. Rail) No
Rail to Rail Output Only
AV (V/V) 100
ICC per Amp. (mA) (typ) 0.093
VOS (µV) (max) 450
CMRR @DC (dB) (typ) 115
PSRR @DC (dB) (typ) 120
Input IBIAS (nA) (max) 20
Unity Gain BW (MHz) (typ) 0.003
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
2.71
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参量

Parametric specs for Instrumentation/Difference Amplifiers
Architecture Classic 3 Op. Amp.
# Amplifiers 1
VCMVR (to Neg. Rail) No
Rail to Rail Output Only
AV (V/V) 100
ICC per Amp. (mA) (typ) 0.093
VOS (µV) (max) 450
CMRR @DC (dB) (typ) 115
PSRR @DC (dB) (typ) 120
Input IBIAS (nA) (max) 20
Unity Gain BW (MHz) (typ) 0.003
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
2.71

主要特征

  • Low Power Consumption Is Ideal for Remote-Sensing and Battery-Powered Applications
    • +2.7V Single-Supply Operation
    • Low Power Consumption
      • 93µA Supply Current
      • 8µA Shutdown Current (MAX4195/MAX4196/MAX4197)
  • Precision Specifications Maximize Sensor Peformance
    • 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

应用/用途

  • 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

描述

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.

简化框图

MAX4194、MAX4195、MAX4196、MAX4197:引脚配置 MAX4194、MAX4195、MAX4196、MAX4197:引脚配置 Zoom icon

技术文档

支持和培训

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