MAX186CCWP

ADCs/DACs - Special Purpose Overview

The MAX186CCWP+ 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 20-pin SO package. The device operates on a single +5V or dual ±5V supply, achieving a sampling rate of 133ksps with ultra-low power consumption. Key electrical parameters include a resolution of 12 bits, an internal 4.096V reference voltage, and a differential nonlinearity (DNL) of ±1 LSB. The component supports software-configurable unipolar/bipolar and single-ended/differential input modes.

ADCs/DACs - Special Purpose Feature Summary

• Integrates an 8-channel multiplexer, track/hold, and 12-bit SAR ADC in a compact 20-SO package.
• Features an internal 4.096V reference and a reference-buffer amplifier for simplified gain trimming.
• Supports SPI, QSPI, MICROWIRE, and TMS320-compatible 4-wire serial interfaces without external logic.
• Offers flexible power management with full power-down (2µA), fast power-down (30µA), and operating modes (1.5mA).

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 suffix 'C' corresponds to the commercial temperature range (0°C to +70°C) and the 'WP' indicates the 20-pin Small Outline package. Confirm RoHS compliance status (+ suffix) and ensure the ordering documentation specifies the grade, as performance metrics vary between A, B, C, and D grades. Cross-reference the datasheet revision to confirm pinout compatibility.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX186 variant over the MAX188 if an internal 4.096V reference is required, eliminating the need for an external precision reference source. Choose this model for applications requiring a balance of moderate speed (133ksps) and low power consumption. Ensure the system interface matches the supported serial protocols (SPI/MICROWIRE). Verify that the source impedance of the analog inputs remains below 5kΩ to maintain specified acquisition times without additional buffering.

ADCs/DACs - Special Purpose Part Context

The MAX186/MAX188 family represents a series of low-power data-acquisition systems designed for battery-operated and portable applications. The MAX186 distinguishes itself from the MAX188 by including an internal reference voltage, whereas the MAX188 requires an external reference. Both share identical architectures regarding the multiplexer, track/hold, and serial interface capabilities, differing primarily in reference configuration and accuracy grades.

ADCs/DACs - Special Purpose Replacement Considerations

Direct replacements within the same package and functionality include other grades of the MAX186C family, such as MAX186BWP+ or MAX186AWP+, which offer improved linearity specifications. For extended temperature ranges, the MAX186EWP+ serves as a functional equivalent with a -40°C to +85°C rating.