MAX186DEWP+T

ADCs/DACs - Special Purpose Overview

The MAX186DEWP+T is a low-power, 8-channel, serial 12-bit analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a successive-approximation architecture. The device operates on a single +5V or dual ±5V supply, consuming 1.5mA in operating mode and 2µA in power-down mode. Key electrical specifications include a 133ksps sampling rate, internal 4.096V reference, and SPI/QSPI/MICROWIRE compatibility. It is housed in a 20-pin SO package with an industrial temperature range of -40°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with 8 single-ended or 4 differential inputs
• Internal 4.096V reference and reference-buffer amplifier
• Low power consumption: 1.5mA active, 2µA full power-down
• Software-configurable unipolar/bipolar and single-ended/differential modes

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific grade suffix 'D' against the manufacturer's datasheet for accuracy specifications. Confirm that the '+T' suffix indicates tape-and-reel packaging compatible with automated assembly processes. Ensure the component meets RoHS compliance requirements for the intended market.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a balance of moderate speed (133ksps) and ultra-low power is required. The internal reference simplifies design compared to the MAX188 variant. Consider the 20-pin SO package constraints and verify that the source impedance of input signals remains below 5kΩ to maintain acquisition time specifications.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX186/MAX188 family of low-power serial ADCs. The MAX186 variant includes an internal reference, whereas the MAX188 requires an external one. The 'D' grade specifies DC accuracy parameters, while the 'E' grade covers the wider industrial temperature range. This series is designed for applications requiring multi-channel data acquisition with minimal power draw.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX188DEWP+T serves as a functional replacement if an external voltage reference is utilized. Other members of the MAX186 family, such as the MAX186CEAP+, offer similar functionality but may differ in package type or temperature rating.