MAX192AEPP

ADCs/DACs - Special Purpose Overview

The MAX192AEPP is a low-power, 8-channel, serial 10-bit analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and successive-approximation register (SAR) architecture. Operating on a single +5V supply, it supports both single-ended and differential input configurations. The device features a 4-wire serial interface compatible with SPI, QSPI, and Microwire protocols. Key electrical specifications include a sampling rate of 133 kS/s, an internal 4.096V reference, and a power consumption of 1.5mA in operating mode. It is housed in a 20-pin Plastic DIP package and operates within a temperature range of -40°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• 8-Channel Multiplexer: Supports single-ended or differential input configurations via software control.
• High-Speed Conversion: Achieves 133 kS/s sampling rate with a 1.5µs acquisition time using SAR architecture.
• Low Power Consumption: Draws 1.5mA during operation and reduces to under 10µA in full power-down mode.
• Integrated Reference: Includes an internal 4.096V reference with ±30ppm/°C typical drift and a buffer amplifier.

ADCs/DACs - Special Purpose Applications

• Portable Data Logging
• Battery-Powered Instruments
• Medical Instruments
• Robotics

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'E' for the industrial temperature range (-40°C to +85°C) and 'P' for the PDIP-20 package when sourcing replacements. Confirm RoHS compliance status as indicated by the '+' suffix in ordering part numbers. Check manufacturer documentation for current production status, as older variants may be discontinued.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX192AEPP for applications requiring 10-bit resolution at 133 kS/s with low power constraints. Ensure the system voltage matches the single +5V requirement. For differential inputs, verify that source impedances are managed to maintain the required 1.5µs acquisition time. Consider the MAX186/MAX188 if a pin-compatible 12-bit upgrade is needed.

ADCs/DACs - Special Purpose Part Context

The MAX192AEPP belongs to the MAX192 family of low-cost, serial data-acquisition systems. It is functionally similar to the MAX192BEPP but offers improved linearity performance with an INL of ±1/2 LSB compared to ±1 LSB. It serves as a bridge between simple ADCs and higher-performance data acquisition modules, offering compatibility with standard microprocessor interfaces.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX192BEPP is a direct pin-compatible alternative with identical functionality but different linearity specifications (±1 LSB INL). Other package variants such as MAX192AEWP (Wide SO) or MAX192AEAP (SSOP) offer the same electrical characteristics in different form factors.