MAX188AEAP

Analog To Digital Converters (ADC) Overview

The MAX188AEAP+ is a low-power, 8-channel, serial 12-bit analog-to-digital converter (ADC) from the MAX186/MAX188 family. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a successive-approximation register (SAR) ADC core. The device operates on a single +5V supply or dual ±5V supplies, requiring an external reference voltage of 4.096V applied to the VREF pin. It features a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols, supporting sampling rates up to 133 kS/s. The component is housed in a 20-pin shrink small-outline package (SSOP) and supports software-configurable unipolar/bipolar and single-ended/differential input modes.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel analog multiplexer with a high-bandwidth track/hold circuit for efficient multi-point data acquisition.
• Features a flexible 4-wire serial interface that connects directly to standard microprocessor buses without external logic.
• Includes a reference-buffer amplifier to simplify gain trimming and calibration procedures.
• Supports multiple power-down modes, allowing supply current reduction to under 10µA between conversions.

Analog To Digital Converters (ADC) Applications

• Portable Data Logging
• Data-Acquisition Systems
• High-Accuracy Process Control
• Automatic Testing Equipment
• Battery-Powered Instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific grade suffix (e.g., 'E' for -40°C to +85°C) and package variant ('AP' for SSOP) during ordering, as performance specifications vary by grade. Confirm RoHS compliance status for lead-free packaging requirements. Ensure the external reference voltage source matches the 4.096V specification required for accurate conversion results.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX188 over the MAX186 when an external precision reference is preferred or required for system calibration. Choose the SSOP package for applications demanding reduced board space compared to PDIP or SO packages. Verify that the host processor supports the required SPI/QSPI/MICROWIRE timing parameters for reliable serial communication.

Analog To Digital Converters (ADC) Part Context

The MAX188 is part of the MAX186/MAX188 series of low-power, 8-channel, serial 12-bit ADCs. It shares the same architecture and pinout as the MAX186, differing primarily in the reference configuration; the MAX188 requires an external reference while the MAX186 includes an internal one. Both devices are designed for battery-powered and portable applications requiring high accuracy and low power consumption.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: MAX186AEAP+