MAX135

PRODUCTION

±15-Bit, Low-Power ADC with Parallel Interface

Data Sheet (Rev. 0) Product Selection Table

Part Models: 4
1ku List Price: Starting From $12.53

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Overview

15-bit, Multi-slope Integration ADC
15µV Resolution at 16 Conv/Sec
Low Supply Current
- 125µA Max (Normal Operation)
- 10µA Max (Sleep-Mode Operation)
±0.005% Accuracy at 16 Conv/Sec
3 Super Bits for 18-Bit Resolution
Low Noise—Operates at 300mV Full Scale
Easy µP Interface—8-Bit Parallel Data Bus
±10pA Input Leakage Current
Small 28 pin DIP and SO packages

The MAX135 is a CMOS 15-bit, binary-output analog-to-digital converter (ADC). Multi-slope integration provides low-noise and high-resolution conversions in less time than standard integrating ADCs: The MAX135 is tested at 16 conversions per second, but operates at up to 6 times that rate. The MAX135 uses Super LSBs with data averaging to achieve 18-bit resolution.

Supply current is 125µA maximum during normal operation and only 10µA maximum in sleep mode. Low conversion noise allows tested operation at only 300mV full scale (15µV per LSB). A simple 8-bit parallel data bus and three control lines easily interface to all common microprocessors, and twos-complement output coding simplifies bipolar measurements.

High resolution and compact size make the MAX135 ideal for data loggers, numerical control systems, weight scales, data-acquisition systems, and panel meters. The MAX135 comes in 28-pin DIP and SO packages in both commercial and extended temperature grades.

Applications

Analog-Signal Measurement: Pressure, Flow, Temperature, Voltage, Current, Resistance, Weight
Battery-Powered Instruments
Control Applications
Data Acquisition

Part Models: 4
1ku List Price: Starting From $12.53

Documentation

Data Sheet 1

MAX135: ±15-Bit, Low-Power ADC with Parallel Interface Data Sheet (Rev.0) 09/01/1991

Reliability Data 1

MAX135 Reliability Data 01/12/2023

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
MAX135CPI+	PDIP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX135CWI+	SOIC_W	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX135CWI+T	SOIC_W	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX135EWI+	SOIC_W	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

May 21, 2018 - 1752 ASSEMBLY
		pcn_1752
MAX135CPI+	PRODUCTION	pcn_1752

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
ADC/DAC Combo Converters 1
MAX1409	Obsolete	Low-Power, 16-Bit Multichannel DAS with Internal Reference, 10-Bit DACs, and RTC
Analog to Digital Converters (ADCs) 3
MAX1462	Obsolete	Low-Voltage, Low-Power, 16-Bit Smart ADC
MAX11205	PRODUCTION	16-Bit, Single-Channel, Ultra-Low Power, Delta-Sigma ADC with 2-Wire Serial Interface
MAX11213	PRODUCTION	16-Bit, Single-Channel, Ultra-Low Power, Delta-Sigma ADC with Programmable Gain and GPIO

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