MAX186DCAP+T

ADCs/DACs - Special Purpose Overview

The MAX186DCAP+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 under 10µA when powered down between conversions. It features an internal 4.096V reference, software-configurable unipolar/bipolar inputs, and a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with 8 single-ended or 4 differential input channels
• Internal 4.096V reference and reference-buffer amplifier for gain trim
• Ultra-low power consumption: 1.5mA active, <10µA in power-down mode
• Serial interface compatible with SPI, QSPI, MICROWIRE, and TMS320 DSPs

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific grade suffix 'D' corresponds to the required accuracy specifications, as grades A, B, C, and D are defined by distinct electrical characteristics in the datasheet. Confirm that the SSOP package variant is available for the desired temperature range, noting that A-grade availability in SSOP may require factory contact. Ensure the ordering suffix '+T' aligns with the required reel packaging quantity.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring multi-channel acquisition with minimal power draw. The MAX186 includes an internal reference, whereas the MAX188 requires an external one; ensure the correct part number matches the reference strategy. Verify that the source impedance of analog inputs remains below 5kΩ to maintain specified acquisition times, or implement external filtering if higher impedances are necessary.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX186/MAX188 family of low-power, serial 12-bit ADCs. It shares architectural similarities with the MAX180/MAX181 parallel interface counterparts but offers a compact serial solution. The device is designed to replace older discrete data-acquisition systems by integrating the multiplexer, track/hold, and ADC into a single 20-pin package.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Designers should evaluate other members of the MAX186 family or consult the manufacturer for current alternatives.