MAX188AEWP+T

ADCs/DACs - Special Purpose Overview

The MAX188AEWP+T is a 12-bit, 8-channel serial analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and a 4-wire serial interface compatible with SPI, QSPI, and Microwire standards. The device operates on a single +5V or dual ±5V supply, consuming 1.5mA in operating mode and as low as 2µA in power-down. Unlike the MAX186, this variant requires an external reference voltage applied to the VREF pin. It supports software-configurable unipolar/bipolar and single-ended/differential inputs.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with 8 single-ended or 4 differential input channels
• Internal track/hold with 133kHz sampling rate using internal clock
• Low power consumption: 1.5mA operating, 2µA full power-down
• Software-selectable unipolar or bipolar input ranges

ADCs/DACs - Special Purpose Applications

• Portable data logging systems
• High-accuracy process control instrumentation
• Battery-powered medical instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the 'E' suffix indicates the -40°C to +85°C industrial temperature range and the 'WP' suffix denotes the 20-pin SOIC package. Confirm the '+' suffix ensures RoHS compliance. As a specialized component, check current availability status directly with the manufacturer or authorized distributors, as lead times may vary for specific grades.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX188 over the MAX186 when an external precision reference is required rather than the internal 4.096V reference. Ensure the application can provide a stable 4.096V reference at the VREF pin. Verify that the system interface supports the 4-wire serial protocol or SPI/Microwire timing requirements for data acquisition.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX186/MAX188 family of low-power, serial 12-bit ADCs. The MAX188 specifically differs from the MAX186 by omitting the internal reference, requiring an external source. Both share identical pinouts, serial interfaces, and power management features, allowing for flexible design choices regarding reference stability and accuracy.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX186AEWP+T is a functional substitute if the internal 4.096V reference is acceptable. Other members of the MAX18x family may serve as replacements depending on package and temperature grade requirements, provided the external reference constraint is met.