36V, Precision, Low-Noise, Wide-Band Amplifier

Fast-Settling, High-Voltage Op Amp is Ideal for an ADC Buffer

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The MAX9632 is a low-noise, precision, wide-band operational amplifier that can operate in a very wide +4.5V to +36V supply voltage range. The IC operates in dual (±18V) or single-supply mode (36V).

The exceptionally fast settling time and low distortion make the IC an excellent solution for precision acquisition systems. The rail-to-rail output swing maximizes the dynamic range when driving high-resolution 24-bit ΣΔ ADCs even with low supply voltages.

The IC achieves 55MHz of gain-bandwidth product and ultra-low 0.94nV/ input voltage noise with only 3.9mA of quiescent current.

The IC is offered in 8-pin SO, µMAX®, and TDFN packages and is rated for operation over the -40°C to +125°C temperature range.
MAX9632: Typical Application Circuit MAX9632: Typical Application Circuit Enlarge+

Key Features

  • DC and AC Performance Ideal for High-Resolution ADC Driver Applications
    • 55MHz Gain-Bandwidth
    • 600ns Settling Time to 16-Bit Accuracy
    • THD of -128dB at 10kHz
    • Low Input Offset Voltage 125µV (max)
    • 0.94nV/√Hz Ultra-Low Input Voltage Noise
    • Low Input Offset Temperature Drift 0.5µV/°C (max)
    • Unity-Gain Stable
  • Wide Supply for High-Voltage Front-Ends
    • +4.5V to +36V Supply Range
  • Improved Reliability with ESD Protection
    • ±8kV HBM and ±1kV CDM ESD
  • Low Pin Count Packages Save Board Space
    • 8-Pin SO, µMAX, TDFN Packages


  • ATE
  • High-Resolution ADC Drivers
  • High-Resolution DAC Buffers
  • Low-Noise Signal Processing
  • Medical Imaging
  • Test and Measurement Systems
Product Reliability Reports: MAX9632.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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