MAX1246ACEE+T

Analog To Digital Converters (ADC) Overview

The MAX1246ACEE+T is a 12-bit successive-approximation analog-to-digital converter (ADC) housed in a 16-pin QSOP package. It integrates a 4-channel multiplexer, track/hold circuitry, and an internal 2.5V reference. Operating from a single +2.7V to +3.6V supply, it supports software-configurable unipolar or bipolar input modes. The device features a 4-wire serial interface compatible with SPI, QSPI, and Microwire protocols. Key electrical specifications include a maximum conversion time of 65µs using the internal clock, a typical supply current of 1.2mA at 133ksps, and a power-down current of 1µA.

Analog To Digital Converters (ADC) Feature Summary

• Integrates a 4-channel analog multiplexer with high-bandwidth track/hold circuitry for efficient multi-point data acquisition.
• Features a flexible 4-wire serial interface that connects directly to standard microprocessor protocols without external logic.
• Includes an internal 2.5V reference with a buffer amplifier offering a ±1.5% voltage adjustment range via the REFADJ pin.
• Provides hardware shutdown control and software-selectable power-down modes to minimize supply current during idle periods.

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the component status as discontinued by checking official Analog Devices archives. Confirm the specific suffix 'ACEE' corresponds to the commercial temperature range and QSOP package. Ensure compatibility with existing board layouts due to the small form factor. Review the datasheet for absolute maximum ratings to prevent damage during integration.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-power, 12-bit resolution ADC is required for battery-operated applications. The MAX1246 variant includes an internal reference, whereas the MAX1247 requires an external one. Consider the 16-pin QSOP package if board space is limited, as it occupies the same area as an 8-pin SO. Verify that the serial interface timing meets the microcontroller's requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX1246/MAX1247 family of low-power, serial 12-bit ADCs. It shares architectural similarities with the MAX146/MAX147, which offer 8-channel configurations. The ACEE suffix denotes the commercial temperature range and the specific QSOP packaging. This series was designed to provide high conversion speed and low power consumption in a compact footprint.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Analog Devices for current alternatives or evaluate the MAX146/MAX147 for increased channel count requirements.