MAX148BEAP+T

Analog To Digital Converters (ADC) Overview

The MAX148BEAP+T is a low-power, 8-channel, serial 10-bit analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It operates on a single +2.7V to +5.25V supply and achieves sampling rates up to 133ksps using successive-approximation architecture. The device integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and a 4-wire serial interface compatible with SPI/QSPI/MICROWIRE standards. It features software-configurable unipolar/bipolar and single-ended/differential inputs. The part is housed in a 20-pin SSOP package and supports industrial temperature ranges.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel analog multiplexer with a high-bandwidth track/hold circuit for efficient multi-point data acquisition.
• Features a flexible 4-wire serial interface that connects directly to standard microprocessor protocols without external logic.
• Supports software-selectable power-down modes to minimize current consumption during idle periods.
• Includes a reference-buffer amplifier allowing for precise voltage adjustment of the conversion reference.

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) compared to the commercial grade. Confirm the '+T' designation corresponds to tape-and-reel packaging if required for automated assembly. Ensure the component is lead-free and RoHS compliant as indicated by the '+' suffix. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and electrical specifications remain unchanged.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX148 variant if an external voltage reference is preferred or already available in the design. Choose the MAX149 variant if an integrated internal 2.5V reference is desired to reduce component count. Consider the source impedance of input signals; higher impedances may require additional capacitance to meet acquisition time requirements. Evaluate the need for differential versus single-ended input configurations based on noise immunity requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX148/MAX149 family of low-power ADCs. It serves as a cost-effective solution for applications requiring moderate resolution and speed. The device complements other Maxim Integrated data acquisition products by offering a compact 20-pin package option. It is designed to simplify system design by integrating multiplexing and conversion capabilities into a single IC.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX149AEAP+T is a functional equivalent within the same family, differing primarily in the inclusion of an internal reference voltage. Verify compatibility regarding reference configuration and temperature range specifications before substitution. Ensure the replacement part maintains the same 20-pin SSOP footprint and pinout arrangement.