Top

Low-Power, Precision Instrumentation Amplifier with Programmable Gain

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

Product Details

Key Features

Applications/Uses

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)
$0.95 @1k
View More

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Parameters

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)
$0.95 @1k

Key Features

  • 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

Applications/Uses

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

Description

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.

Simplified Block Diagram

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

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .