MAX9632
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MAX9632

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

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

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Part Details
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
Additional Details
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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.

Applications

  • ATE
  • High-Resolution ADC Drivers
  • High-Resolution DAC Buffers
  • Low-Noise Signal Processing
  • Medical Imaging
  • Test and Measurement Systems

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Documentation
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAXSANTAFEEVSYS

Evaluation Kit for the MAXREFDES5 4-Channel Analog Front End

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MAXSANTAFEEVSYS

Evaluation Kit for the MAXREFDES5 4-Channel Analog Front End

Evaluation Kit for the MAXREFDES5 4-Channel Analog Front End

Features and Benefits

  • Self-Contained Easy Evaluation Kit for MAXREFDES5
  • Optimized AFE with Common Analog Input Ranges
  • Small Form Factor Test Platform
  • All Relevant Reference Design Files Included

Product Detail

The MAXSANTAFEEVSYS kit allows users to quickly demonstrate and evaluate the functionality of the MAXREFDES5 4-channel 16-bit, isolated analog front end (AFE) reference design without the need for a bench power supply, signal generator equipment, or Xilinx development kit. The reference design board connects to a PC through an included USB-to-SPI adapter that provides both power and data communication to the board. To test the AFE reference design, a USB-powered signal generator board utilizing one of Maxim’s digital-to-analog converters (DAC) is also included. A Windows®-based graphical user interface (GUI) communicates with the boards for generating various analog signal test patterns and simplified access to AFE measurement data.

MAXSANTAFEEVSYS User Manual is available for download.

The MAXREFDES5 reference design is a 4-channel analog front end (AFE) that accepts -10V to +10V, 0V to 10V, and 4–20mA current loop signals. The design integrates a 16-bit ADC with multirange input programmability (MAX1301) plus low-noise, high-impedance analog buffers (MAX9632) on two of the input channels and an ultra-high precision 4.096V voltage reference (MAX6126) to achieve maximum performance from the 16-bit system. A 600VRMS digital isolator (MAX14850) and 3W transformer driver (MAX256) provide the necessary isolated data and power connections to the host system. LDO regulators (MAX1659) provide regulated +12V, -12V, and 5V power rails to the analog front end.

EV Kit Contents
  • MAXREFDES5 4-Channel AFE Board
  • USB2PMB1 USB to Pmod Type 2A Adapter Board
  • MAX5216DACLITE Signal Generator Board
  • Two (2) Wires with Hook Clips (1 Red and 1 Black)
  • Two (2) USB Type A Male to USB Type B Mini Cables
  • USB Flash Drive with Documentation, GUI Applications, and USB Drivers

Applications

  • Industrial Data Acquisition
  • Programmable Automation Controllers (PAC)
  • Programmable Logic Controllers (PLC)
  • Proportional-Integral-Derivative (PID) Controllers
Reference Designs

Reference Designs 5

maxrefdes5fig00

16-Bit High Accuracy Multi-Input Isolated Analog Front End (AFE)

MAXREFDES60

16-Bit Analog Output Micro PLC

MAXREFDES46

4-Channel Analog Input/Output

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MAXREFDES46

4-Channel Analog Input/Output

4-Channel Analog Input/Output

Features and Benefits

Features

  • Programmable high-accuracy current/voltage output
  • High accuracy
  • ±10V, 0 to 10V, and 4–20mA Inputs
  • Current output drives 0 to 1kΩ
  • Voltage output drives loads down to 1kΩ
  • Extensive error reporting
  • Isolated power and data
  • Device drivers
  • Example C source code

Competitive Advantages

  • Flexibility
  • System safety
  • Small solution size

Applications

  • PLCs
  • DCS
  • Distributed I/Os
  • Embedded systems
  • Industrial control and automation
View Detailed Reference Design external link

Design & Integration Tools

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9.88 M

MAXREFDES6

16-Bit, High-Accuracy, 0 to 100mV Input, Isolated Analog Front-End (AFE)

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MAXREFDES6

16-Bit, High-Accuracy, 0 to 100mV Input, Isolated Analog Front-End (AFE)

16-Bit, High-Accuracy, 0 to 100mV Input, Isolated Analog Front-End (AFE)

Features and Benefits

Features

  • Applications
  • High-accuracy analog input
  • High impedance
  • 0 to 100mV input range
  • Isolated data path
  • Small printed-circuit board (PCB) area
  • Device drivers
  • Example C source code
  • Pmod-compatible form factor

Applications

  • Low-voltage output sensors
  • Process control
  • Medical

Competitive Advantages

  • Unique single-ended architecture
  • Optimized board size
  • Magnetically immune data path isolation
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

43.75 M

MAXREFDES74

MAXREFDES74: 18-Bit Precision Data Acquisition System

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MAXREFDES74

MAXREFDES74: 18-Bit Precision Data Acquisition System

MAXREFDES74: 18-Bit Precision Data Acquisition System

Features and Benefits

The MAXREFDES74# reference design features:

  • Power and data isolation
  • Flexible, configurable inverting or noninverting input scheme
  • Unipolar or bipolar input (ADC) and output (DAC)

MAX11156

  • 18-bit resolution with no missing codes
  • SNR: 94.4dB
  • THD: -107dB at 1kHz
  • Buffered internal or external voltage reference input
  • Internal reference with -6ppm/°C (typ) temperature coefficient
  • Single 5V supply
  • True bipolar ±5V input range

MAX5318

  • 18-bit resolution with no missing codes
  • High accuracy: ±2 LSB INL (max)
  • 3µs settling time
  • User-programmable offset and gain calibration
  • ±0.5ppm/°C (typ) offset and gain drift over temperature
  • Force/sense output
  • 50MHz SPI-compatible interface with 1.8V to 5.5V logic
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

6.42 M

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