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Low-Power, Precision Instrumentation Amplifier with Programmable Gain

Enhances Sensor System Accuracy by 4x and Extends Battery Life by 55%

产品详情

主要特征

应用/用途

Parametric specs for Instrumentation/Difference Amplifiers
Rail to Rail Input/Output
AV (V/V) Adj.
ICC per Amp. (mA) (typ) .065
VOS (µV) (max) 25
CMRR @DC (dB) (typ) 130
PSRR @DC (dB) (typ) 120
Input IBIAS (nA) (max) 0.01
Unity Gain BW (MHz) (typ) .3
Oper. Temp. (°C) -40 to +125
Package/Pins THIN WLP/9
Budgetary
Price (See Notes)
1.01
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参量

Parametric specs for Instrumentation/Difference Amplifiers
Rail to Rail Input/Output
AV (V/V) Adj.
ICC per Amp. (mA) (typ) .065
VOS (µV) (max) 25
CMRR @DC (dB) (typ) 130
PSRR @DC (dB) (typ) 120
Input IBIAS (nA) (max) 0.01
Unity Gain BW (MHz) (typ) .3
Oper. Temp. (°C) -40 to +125
Package/Pins THIN WLP/9
Budgetary
Price (See Notes)
1.01

主要特征

  • Supply Voltage Range: 1.7V to 3.6V
  • Very Low 25µV (max) Input Offset Voltage
  • Low 65µA Quiescent Current
  • Rail-to-Rail Inputs and Outputs
  • EMIRR
    • >100dB at 1800MHz, 2400MHz
    • >90dB at 400MHz, 900MHz
  • 28kHz, -3dB Bandwidth
  • Eight Input-Selectable Fixed-Gain Options
    • 10V/V, 20V/V, 40V/V, 80V/V, 100V/V, 150V/V, 200V/V, and 250V/V
  • Power-Saving Shutdown Mode
  • Available in Tiny 1.26mm x 1.23mm, 9-Bump WLP and 2.5mm x 2mm, 10-Pin TDFN

应用/用途

  • EKG Medical Devices
  • Insulin and Infusion Pumps
  • Low-Power Sensor Interface
  • Pressure, Weight, Force Sensors
  • RTD Temperature Sensors
  • Wearable Devices

描述

The MAX41400 is a low-power, high-precision instrumentation amplifier with programmable gain through input pins.

Available in a space-saving, 9-bump wafer-level package (WLP) with a 0.4mm bump pitch, it is designed for use in portable medical and industrial sensor applications. The device features internal EMI filters to protect from RF disturbances and EMI. The internal fixed gain can be selected from 10V/V to 250V/V. The gain-setting resistors are located inside the device, thus minimizing gain drift variations over the temperature range.

The MAX41400 features rail-to-rail CMOS inputs and outputs; a 28kHz, -3dB bandwidth at just 65µA (typ) supply current; and 25µV (max) zero-drift input offset voltage over time and temperature. The zero-drift feature eliminates the high 1/f noise typically found in CMOS input amplifiers, making it useful for a wide variety of low-frequency measurement applications.

The MAX41400 operates from a 1.7V to 3.6V power supply voltage and is specified over the -40°C to +125°C automotive temperature range.

简化框图

MAX41400: Simplified Block Diagram MAX41400: Simplified Block Diagram Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心