MAX146AEAP+T

Analog To Digital Converters (ADC) Overview

The MAX146AEAP+T is a 12-bit successive-approximation analog-to-digital converter (ADC) in an SSOP-20 package. It operates from a single +2.7V to +3.6V supply and features an internal 2.5V reference. The device integrates an 8-channel multiplexer, track/hold circuitry, and a serial interface compatible with SPI, QSPI, and Microwire standards. It supports both single-ended and differential input configurations with software-selectable unipolar or bipolar modes. The ADC achieves sampling rates up to 133ksps with low power consumption, including a shutdown mode drawing under 1µA.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-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 voltage reference with a buffer amplifier offering a ±1.5% adjustment range.
• Supports software-configurable unipolar and bipolar input ranges for single-ended and differential signal processing.

Analog To Digital Converters (ADC) Applications

• Portable data logging systems
• Medical instruments
• 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 the extended temperature grade and tape-and-reel packaging. Ensure compatibility with the required supply voltage range of +2.7V to +3.6V for the MAX146 variant. Cross-reference pinout and electrical characteristics with the latest datasheet to validate integration into the target design.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution with 8 channels is required within a low-power constraint. The internal reference simplifies board layout compared to variants requiring external references. Verify that the system clock frequency aligns with the specified 133ksps maximum sampling rate. Consider the SSOP-20 package dimensions for PCB space limitations and thermal dissipation requirements under continuous operation.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX146/MAX147 family of low-power, serial 12-bit ADCs. The MAX146 variant is distinguished by its integrated 2.5V reference and operation on a single +2.7V to +3.6V supply, whereas the MAX147 requires an external reference and supports up to +5.25V. The AEAP+T suffix denotes the automotive/extended temperature grade (-40°C to +85°C) and surface-mount SSOP packaging.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX146ACAP+T serves as a commercial-grade alternative with identical electrical specifications but a limited operating temperature range of 0°C to +70°C. For 4-channel implementations, the MAX1246 series offers comparable performance with reduced pin counts. Verify that any substitute maintains SPI compatibility and similar power-down current characteristics.