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Dual 36V Op Amp for 18-Bit SAR ADC Front-End

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

Product Details

The MAX9633 is a low-noise, low-distortion operational amplifier that is optimized to drive ADCs for use in applications from DC to a few MHz. The MAX9633 features low noise (3nV/ at 1kHz and 3.5nV/ at 100Hz) and low distortion (130dB at 10kHz), making it suitable for industrial, medical, and test applications.

The exceptionally fast settling-time and low input offset voltage makes the IC an excellent solution to drive high-resolution 12-bit to 18-bit SAR ADCs.

The IC operates from a wide supply voltage range up to 36V with only 3.5mA of quiescent current per amplifier.

The IC is offered in an 8-pin, 3mm x 3mm TDFN package for operation over the -40°C to +125°C temperature range.

Key Features

  • High-Resolution ADC Driver
    • 27MHz Gain Bandwidth
    • 750ns Settling Time to 16-Bit Accuracy
    • THD of 130dB at 10kHz
    • Low Input Voltage Offset 200µV (max)
    • 3nV/√Hz Ultra-Low Input Voltage Noise
    • Low Input Offset Temperature Drift 0.9µV/°C (max)
    • Unity Gain Stable
  • Support a Wide Range of Industrial Applications
    • 4.5V to 36V Wide Supply Range
  • Improved Reliability
    • ±5kV ESD Protection HBM
  • Saves Board Space
    • 8-Pin TDFN and SO Packages

Applications/Uses

  • ADC Drivers
  • Data Acquisition and Instrumentation
  • High-Performance Audio Circuitry
  • Imaging Systems
  • Motor Control
  • Power Grid Systems
  • Test and Measurement Equipments

Simplified Block Diagram

MAX9633: Typical Application Circuit MAX9633: Typical Application Circuit Zoom icon

Technical Docs

Design & Development

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SIMULATION MODELS

MAX9633 Orcad Library

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Support & Training

Search our knowledge base for answers to your technical questions.

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

Parameters

Key Features

  • High-Resolution ADC Driver
    • 27MHz Gain Bandwidth
    • 750ns Settling Time to 16-Bit Accuracy
    • THD of 130dB at 10kHz
    • Low Input Voltage Offset 200µV (max)
    • 3nV/√Hz Ultra-Low Input Voltage Noise
    • Low Input Offset Temperature Drift 0.9µV/°C (max)
    • Unity Gain Stable
  • Support a Wide Range of Industrial Applications
    • 4.5V to 36V Wide Supply Range
  • Improved Reliability
    • ±5kV ESD Protection HBM
  • Saves Board Space
    • 8-Pin TDFN and SO Packages

Applications/Uses

  • ADC Drivers
  • Data Acquisition and Instrumentation
  • High-Performance Audio Circuitry
  • Imaging Systems
  • Motor Control
  • Power Grid Systems
  • Test and Measurement Equipments

Description

The MAX9633 is a low-noise, low-distortion operational amplifier that is optimized to drive ADCs for use in applications from DC to a few MHz. The MAX9633 features low noise (3nV/ at 1kHz and 3.5nV/ at 100Hz) and low distortion (130dB at 10kHz), making it suitable for industrial, medical, and test applications.

The exceptionally fast settling-time and low input offset voltage makes the IC an excellent solution to drive high-resolution 12-bit to 18-bit SAR ADCs.

The IC operates from a wide supply voltage range up to 36V with only 3.5mA of quiescent current per amplifier.

The IC is offered in an 8-pin, 3mm x 3mm TDFN package for operation over the -40°C to +125°C temperature range.

Simplified Block Diagram

MAX9633: Typical Application Circuit MAX9633: Typical Application Circuit 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