MAX186BCAP

ADCs/DACs - Special Purpose Overview

The MAX186BCAP is a 12-bit, 8-channel analog-to-digital converter (ADC) from Analog Devices Inc./Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and serial interface into a single system. The device operates on a single +5V or dual ±5V supply, consuming 1.5mA in operating mode and 2µA in power-down mode. 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. Packaged in a 20-pin SSOP, it supports sampling rates up to 133ksps.

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 simplification
• Ultra-low power consumption: 1.5mA operating, 2µA full power-down
• 4-wire serial interface compatible with SPI, QSPI, MICROWIRE, and TMS320 DSPs

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 'B' against the manufacturer's electrical characteristics table, as accuracy parameters such as offset error and gain error vary by grade. Confirm the package type is the 20-pin SSOP variant. Ensure the ordering documentation specifies lead-free/RoHS compliance if required by the application standards.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX186BCAP when an internal voltage reference is preferred over an external one, distinguishing it from the MAX188 series. Choose this component for applications requiring low power dissipation in battery-operated devices. Verify that the 133ksps maximum sampling rate and 12-bit resolution meet the system's dynamic performance requirements.

ADCs/DACs - Special Purpose Part Context

The MAX186BCAP belongs to the MAX186/MAX188 family of low-power, serial 12-bit ADCs. This family combines data acquisition functions including multiplexing and track/hold circuits. The 'C' suffix indicates a commercial temperature range of 0°C to +70°C, while the 'B' suffix denotes a specific accuracy grade within the product line.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes include other grades of the MAX186BCAP (e.g., MAX186CAP+ for grade A/C/D). For applications requiring an external reference, the MAX188BCAP is functionally similar but lacks the internal reference.