MAX149ACAP

Analog To Digital Converters (ADC) Overview

The MAX149ACAP is a 10-bit analog-to-digital converter featuring an 8-channel multiplexer and high-bandwidth track/hold circuit. It operates from a single +2.7V to +5.25V supply, supporting sampling rates up to 133ksps. The device integrates an internal 2.5V reference and offers software-configurable unipolar or bipolar input modes for both single-ended and differential signals. Communication utilizes a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. It is housed in a 20-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel multiplexer with a high-bandwidth track/hold circuit for efficient multi-point data acquisition.
• Features a built-in 2.5V reference voltage source with a buffer amplifier allowing for ±1.5% adjustment range.
• Supports flexible power management through hardware shutdown pins and software-selectable power-down modes.
• Provides a 4-wire serial interface that connects directly to standard microprocessor communication protocols without external logic.

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature range of 0°C to +70°C. Confirm the 'AP' designation corresponds to the 20-pin SSOP package type. Ensure the '+T' suffix matches the required reel packaging format if applicable. Cross-reference the manufacturer's latest ordering guide for availability status.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an integrated solution for low-power, multi-channel signal acquisition is required. It is suitable for designs needing a single-supply operation between 2.7V and 5.25V. Consider the internal reference capability to reduce external component count. Evaluate the serial interface compatibility with the target processor before finalizing the design.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX148/MAX149 family of low-power, serial 10-bit ADCs. The MAX149 variant distinguishes itself by including an internal reference, whereas the MAX148 requires an external one. Both share identical pinouts and functional architectures, differing primarily in reference configuration and specific accuracy grades within the series.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX148ACAP+ serves as a direct functional substitute if an external reference voltage is available. For 4-channel requirements, the MAX1249ACEE+T is a compatible alternative within the same product family. Verify package dimensions and thermal characteristics when swapping components.