MAX188BEWP

Analog To Digital Converters (ADC) Overview

The MAX188BEWP+ is a low-power, 8-channel, serial 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a successive-approximation ADC core within a single device. The component operates on a single +5V supply or dual ±5V supplies and features a software-configurable input range for unipolar or bipolar signals. It utilizes a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The part requires an external reference voltage of 4.096V applied to the VREF pin and is housed in a 20-pin SO package.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel multiplexer with a high-bandwidth track/hold circuit for efficient data acquisition
• Features a flexible 4-wire serial interface directly compatible with standard microprocessor protocols without external logic
• Supports both internal clock generation and external serial clock driving for conversion timing control
• Includes a reference-buffer amplifier to simplify gain trimming and calibration processes

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) and 'WP' denotes the SOIC package type. Confirm RoHS compliance status as indicated by the '+' suffix. Ensure the external reference voltage requirement is met in the design, as this variant lacks an internal reference unlike the MAX186 series.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX188BEWP+ when an external precision reference is preferred over an internal one. This model supports differential and single-ended inputs via software configuration. Consider the power-down modes for battery applications, which reduce current consumption significantly between conversions. Verify that the serial interface timing meets the host processor's requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX186/MAX188 family of low-power, 8-channel, serial 12-bit ADCs. The MAX188 variant specifically distinguishes itself from the MAX186 by requiring an external reference voltage at the VREF pin, whereas the MAX186 includes an internal 4.096V reference. Both share identical architecture, pinouts, and performance characteristics regarding sampling rate and resolution.

Analog To Digital Converters (ADC) Replacement Considerations

MAX186BEWP+ is a functional substitute if an internal reference is acceptable. MAX188BCWP+ offers the same electrical specifications but in a commercial temperature grade (0°C to +70°C). Check datasheet revisions for any minor timing parameter updates.