MAX9632

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

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

Data Sheet (Rev. 5)
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Part Details

  • 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
MAX9632
36V, Precision, Low-Noise, Wide-Band Amplifier
MAX9632: Typical Application Circuit
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 5

Design Note 2

Technical Articles 5

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Tools & Simulations

SPICE Model 1

Evaluation Kits

MAXSANTAFEEVSYS

Evaluation Kit for the MAXREFDES5 4-Channel Analog Front End

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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 Details

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. 

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
MAXSANTAFEEVSYS
Evaluation Kit for the MAXREFDES5 4-Channel Analog Front End

Reference Designs

maxrefdes5fig00
maxrefdes5fig00
maxrefdes5fig01
Santa Fe (MAXREFDES5) Circuits from the lab

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

View Detailed Reference Design

Features and Benefits

  • High accuracy
  • ±10V, 0 to 10V, and 4–20mA Inputs
  • Isolated power and data
  • Small printed circuit board (PCB) area
  • Device drivers
  • Example C source code
  • Pmod™-compatible form factor

MAXREFDES60
MAXREFDES60
This single channel analog output reference design is in the micro PLC form factor. The on-board microcontroller controls a 16-bit DAC to produce a high accuracy 0-10V output. The design features isolated power and data.
MAXREFDES60 Circuits from the lab

16-Bit Analog Output Micro PLC

View Detailed Reference Design

Features and Benefits

  • High accuracy
  • 0 to 10V voltage output with ±20% overrange
  • Isolated power and data
  • Micro PLC form factor
  • Device drivers
  • Example C source code
  • Test data
MAXREFDES46
MAXREFDES46
MAXREFDES46-Fig01
MAXREFDES46 Circuits from the lab

4-Channel Analog Input/Output

View Detailed Reference Design

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
MAXREFDES6
MAXREFDES6
MAXREFDES6 - Design Block Diagram
MAXREFDES6 (Fremont) Circuits from the lab

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

View Detailed Reference Design

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
MAXREFDES74
MAXREFDES74
MAXREFDES74 Circuits from the lab

MAXREFDES74: 18-Bit Precision Data Acquisition System

View Detailed Reference Design

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
Santa Fe (MAXREFDES5)
16-Bit High Accuracy Multi-Input Isolated Analog Front End (AFE)
maxrefdes5fig00
maxrefdes5fig01
MAXREFDES60
16-Bit Analog Output Micro PLC
MAXREFDES60
This single channel analog output reference design is in the micro PLC form factor. The on-board microcontroller controls a 16-bit DAC to produce a high accuracy 0-10V output. The design features isolated power and data.
MAXREFDES46
4-Channel Analog Input/Output
MAXREFDES46
MAXREFDES46-Fig01
MAXREFDES6 (Fremont)
16-Bit, High-Accuracy, 0 to 100mV Input, Isolated Analog Front-End (AFE)
MAXREFDES6
MAXREFDES6 - Design Block Diagram
MAXREFDES74
MAXREFDES74: 18-Bit Precision Data Acquisition System
MAXREFDES74

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