MAX1247BCPE+

Analog To Digital Converters (ADC) Overview

The MAX1247BCPE+ is a 12-bit successive-approximation analog-to-digital converter (ADC) featuring a 4-channel multiplexer and track/hold circuit. It operates from a single +2.7V to +5.25V supply and requires an external reference voltage. The device supports software-configurable unipolar or bipolar input modes for both single-ended and differential signals. A 4-wire serial interface compatible with SPI, QSPI, and Microwire protocols facilitates data transfer at speeds up to 133ksps. Power consumption is optimized with a fast power-down mode drawing 54µA and a full power-down mode consuming 1µA.

Analog To Digital Converters (ADC) Feature Summary

• Software-selectable input configurations for single-ended or differential operation
• Integrated track/hold circuitry with high-bandwidth signal acquisition
• Flexible serial interface supporting multiple standard communication protocols
• Programmable power-down states for efficient energy management

Analog To Digital Converters (ADC) Applications

• Portable data logging systems
• Medical instrumentation
• Pen digitizers
• Battery-powered instruments
• Process control applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the component designation against official manufacturer documentation to confirm the specific suffix indicates lead-free compliance and commercial temperature range. Ensure the external reference requirements are met by the system design, as this variant lacks an internal reference unlike its counterpart. Cross-check pinout compatibility if replacing existing designs.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-power, multi-channel ADC is required for battery-operated devices. The MAX1247 differs from the MAX1246 by requiring an external reference voltage rather than utilizing an internal one. Consider the package size constraints, as the QSOP-16 footprint matches that of an 8-pin SO. Evaluate the serial clock frequency limits to ensure proper timing alignment with the host microprocessor.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX1246/MAX1247 family of low-power, serial 12-bit ADCs manufactured by Analog Devices / Maxim Integrated. The series provides a compact solution for data acquisition tasks where space and power efficiency are critical. The MAX1247 variant specifically addresses applications needing flexible external reference integration while maintaining the same form factor and performance characteristics as the rest of the family.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX1246BCPE+ serves as a direct functional substitute within the same package, differing primarily in its integrated internal reference voltage versus the external requirement of the MAX1247.