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Micropower, Single-Supply, Rail-to-Rail Precision Differential Amplifiers

Product Details

Key Features

Applications/Uses

Parametric specs for Instrumentation/Difference Amplifiers
Architecture Differential Amp.
# Amplifiers 1
VCMVR (to Neg. Rail) Yes
Rail to Rail Output Only
AV (V/V) 10
ICC per Amp. (mA) (typ) 0.042
VOS (µV) (max) 500
CMRR @DC (dB) (typ) 90
PSRR @DC (dB) (typ) 120
Unity Gain BW (MHz) (typ) 0.045
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.89
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Simplified Block Diagram

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Parameters

Parametric specs for Instrumentation/Difference Amplifiers
Architecture Differential Amp.
# Amplifiers 1
VCMVR (to Neg. Rail) Yes
Rail to Rail Output Only
AV (V/V) 10
ICC per Amp. (mA) (typ) 0.042
VOS (µV) (max) 500
CMRR @DC (dB) (typ) 90
PSRR @DC (dB) (typ) 120
Unity Gain BW (MHz) (typ) 0.045
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.89

Key Features

  • Low 0.01% Gain Error
  • High Common-Mode Rejection: 110dB (MAX4199)
  • 10µV Input Offset Voltage (MAX4199)
  • 30µV Input Offset Voltage (MAX4198)
  • +2.7V to +7.5V Single-Supply Operation
  • 42µA Supply Current
  • 175kHz (MAX4198) and 45kHz (MAX4199) -3dB Bandwidth
  • 6.5µA Shutdown Current
  • Rail-to-Rail Outputs Drive 5kΩ Loads
  • Input Voltage Range Extends 100mV Beyond-the-Rails (MAX4198)
  • Available in Space-Saving 8-Pin µMAX Package

Applications/Uses

  • Current-Sense Amplifiers
  • Data Acquisition
  • Differential Voltage Amplification
  • Instrumentation Amplifier Building Block
  • Portable Battery-Powered Equipment
  • Transducer Interface

Description

The MAX4198/MAX4199 low-power, rail-to-rail differential amplifiers are ideal for single-supply applications that benefit from a low 0.01% gain error. The MAX4198 is factory trimmed to a fixed gain of +1V/V, and the MAX4199 is trimmed to a fixed gain of +10V/V. Capable of operating from a single +2.7V to +7.5V supply or from dual ±1.35V to ±3.75V supplies, they consume only 42µA while achieving -3dB bandwidths of 175kHz (MAX4198) and 45kHz (MAX4199). These amplifiers feature a shutdown mode that reduces the supply current to 6.5µA.

The MAX4198/MAX4199 can drive 5kΩ loads to within 100mV from each rail. The standard differential amplifier configurations provide common-mode rejection of 90dB for the MAX4198 and 110dB for the MAX4199. The input common-mode voltage range for the MAX4198 extends 100mV Beyond-the-Rails™.

The MAX4198/MAX4199 are offered in a space-saving 8-pin µMAX® package. For complete micropower, rail-to-rail instrumentation amplifiers, see the MAX4194-MAX4197 data sheet.

Simplified Block Diagram

MAX4198, MAX4199: Functional Diagram MAX4198, MAX4199: Functional 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 .