MAX9633

Obsolete

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

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

Data Sheet (Rev. 4) Product Selection Table

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Overview

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

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.

Applications

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

Documentation

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

SPICE Model 1

MAX9633 SPICE Macro Model

Reference Designs

MAXREFDES71: 2-Channel Analog Input/Analog Output with Transformer Driven Power

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Features and Benefits

Applications

Industrial control automation
Servo drive

Competitive Advantages

High speed
High accuracy
Low noise

Features

Two independent analog inputs
Two independent analog outputs
Isolated power and data
High-speed 400ksps analog input sampling rate
High-accuracy 16-bit resolution
Voltage output settles to within 2 LSB in 17µs
Current output settles to within 2 LSB in 77µs
Device drivers
Example C source code
Configuration files for ZedBoard™ platform
FMC-compatible

Part Used

MAX6126

MAX11166

MAX9633

Design & Integration Tools

Download Design Files
26.55 M

2-Channel Analog Input/Analog Output with Flyback DC-DC

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Features and Benefits

Two independent analog inputs
Two independent analog outputs
Isolated power and data
High-speed 400ksps analog input sampling rate
High-accuracy 16-bit resolution
Voltage output settles to within 2 LSB in 17µs
Current output settles to within 2 LSB in 77µs
Device drivers
Example C source code
Configuration files for ZedBoard^™ platform
FMC-compatible

Part Used

Design & Integration Tools

Download Design Files
26.1 M

MAXREFDES75#: 24-Bit Weigh Scale with a 16-Bit DAC, 0 to 10V Output

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Features and Benefits

Ratiometric measurement or measurement compared to a precision voltage reference
User-programmable offset and gain calibration for sensor (load cell)
User-programmable offset and gain calibration for DAC
User-programmable voltage output range mapping