MAX149BEAP+T

Analog To Digital Converters (ADC) Overview

The MAX149BEAP+T is a low-power, 8-channel, serial 10-bit analog-to-digital converter (ADC) from Analog Devices. It operates on a single +2.7V to +5.25V supply and samples at up to 133ksps. The device integrates an internal 2.5V reference and features software-configurable unipolar/bipolar and single-ended/differential inputs. It utilizes a 4-wire serial interface compatible with SPI/QSPI/MICROWIRE/TMS320 protocols. Key electrical parameters include ±1 LSB INL, ±1 LSB DNL, and a typical operating current of 1.2mA at 133ksps. It is housed in a 20-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an internal 2.5V voltage reference for simplified system design
• Supports flexible input configurations including single-ended and differential modes
• Features a hardware shutdown pin and software-selectable power-down modes
• Provides direct compatibility with standard serial communication protocols

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 'E' indicates the extended temperature range (-40°C to +85°C). Confirm the '+T' designation corresponds to tape-and-reel packaging. Ensure the component matches the lead-free/RoHS-compliant specification indicated by the '+' symbol. Cross-reference the manufacturer's ordering information for availability status.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-channel multiplexed ADC is required with low power consumption. Choose the MAX149 variant over the MAX148 if an integrated internal reference is preferred. Ensure the application supports the 10-bit resolution and 133ksps sampling rate. Verify that the serial interface timing aligns with the host microcontroller's capabilities.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX148/MAX149 family of low-power serial ADCs. It shares architectural similarities with the MAX1248/MAX1249 but offers eight channels instead of four. The device is designed for battery-operated applications requiring moderate speed and resolution. It complements other Maxim Integrated data acquisition solutions.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX148AEAP+T serves as a functional substitute but requires an external voltage reference. The MAX149AEP+T is available in a PDIP package. Verify pinout compatibility and thermal performance differences between SSOP and alternative packages before substitution.