MAX132

PRODUCTION

±18-Bit ADC with Serial Interface

Data Sheet (Rev. 2) Product Selection Table

Part Models: 6
1ku List Price: Starting From $14.18

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Overview

Low Supply Current:
- 60µA (Normal Operation)
- 1µA (Sleep-Mode Operation)
±0.006% FSR Accuracy at 16 Conv/sec
Low Noise: 15µV_RMS
Serial I/O Interface with Programmed Output for Mux and PGA
Performs up to 100 Conv/sec
±2pA Input Current
50Hz/60Hz Rejection

The MAX132 is a CMOS, 18-bit plus sign, serial-output, analog-to-digital converter (ADC). Multi-slope integration provides high-resolution conversions in less time than standard integrating ADCs, allowing operation up to 100 conversions per second. Low conversion noise provides guaranteed operation with ±512mV full-scale input range (2µV/LSB). A simple 4-wire serial interface connects easily to all common microprocessors, and twos-complement output coding simplifies bipolar measurements. Typical supply current is only 60µA and is reduced to 1µA in sleep mode. Four serially programmed digital outputs can be used to control an external multiplexer or programmable-gain amplifier. The MAX132 comes in 24-pin narrow DIP and wide SO packages, and is available in commercial and extended temperature grades.

High resolution, compact size, and low power make this device ideal for data loggers, weigh scales, data-acquisition systems, and panel meters.

Applications

Battery-Powered Applications
Industrial Process Controls
Remote Data Acquisition
Transducer-Signal Measurement Pressure, Flow, Temperature, Voltage Current, Resistance, Weight

Part Models: 6
1ku List Price: Starting From $14.18

Documentation

Data Sheet 1

MAX132: ±18-Bit ADC with Serial Interface Data Sheet (Rev.2) 08/01/1995

Design Note 1

PC Printer Port Controls Data Logger 07/09/1998

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX132CNG+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX132CWG+	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX132CWG+T	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX132ENG+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX132EWG+	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX132EWG+T	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 4
MAX11209	PRODUCTION	18-Bit, Ultra-Low Power, Delta-Sigma ADCs with Programmable Gain and GPIO
MAX1401	PRODUCTION	+3V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC
MAX1403	PRODUCTION	+3V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC
MAX11212	PRODUCTION	18-Bit, Single-Channel, Ultra-Low Power, Delta-Sigma ADC with 2-Wire Serial Interface

Evaluation Kits

Evaluation Kit for the MAX132

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Features and Benefits

Fully Functional 18-Bit ADC
±5V Input Range
Single +5V Supply Operation
IBM-Compatible Software Included
Complete 80C32 Code Listing Provided

Product Details

The MAX132 evaluation kit (EV kit) contains a fully assembled and functional printed circuit board with a MAX132 ADC, 80C32 microcontroller, MAX699 microprocessor supervisor, MAX233 RS-232 interface, and all other components needed for an 18-bit DAS. 8kB of EPROM contain the 80C32 program code, and an additional 8kB of CMOS RAM is included to store conversion results. A prototyping area of 5in² is reserved for breadboarding, signal conditioning, or other application-specific circuits.

The kit operates from a single +5V supply, and links to an IBM-compatible personal computer through an RS-232 link. Commands entered on the keyboard are sent to the EV kit board, and conversion results are returned for display. All required IBM-compatible software is included.