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

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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.
MAX4198, MAX4199: Functional Diagram MAX4198, MAX4199: Functional Diagram Enlarge+

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


  • Current-Sense Amplifiers
  • Data Acquisition
  • Differential Voltage Amplification
  • Instrumentation Amplifier Building Block
  • Portable Battery-Powered Equipment
  • Transducer Interface
Part NumberArchitectureAmps.VCMVRRail to RailAV
ICC per Amp.
ICC per Amp.
Unity Gain BW
Slew Rate
Noise Spec'd @Low Pwr. ShutdnOper. Temp.
to Neg. Railminmaxtypmaxmaxtyptyptyptyp<See Notes
MAX4198 Differential Amp.1YesInput/Output12.77.50.0420.055500901200.1750.07VEE-0.1 to VCC+0.15810kHzNo-40 to +85
SOIC (N)/8
$1.90 @1k
MAX4199 Output Only100.0450.1VEE-0.1 to VCC-1.038
SOIC (N)/8
$1.89 @1k
See All Instrumentation/Difference Amplifiers (11)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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