MAX149ACAP+

Analog To Digital Converters (ADC) Overview

The MAX149ACAP+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 samples at up to 133ksps. The device integrates an internal 2.5V reference, an 8-channel multiplexer, and a high-bandwidth track/hold circuit. It features a 4-wire serial interface compatible with SPI/QSPI/MICROWIRE standards. The ADC supports software-configurable unipolar/bipolar and single-ended/differential inputs. It is housed in a 20-pin SSOP package and operates within a temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an internal 2.5V reference voltage source
• Supports software-selectable single-ended or differential input configurations
• Features a 4-wire serial interface compatible with standard microprocessor protocols
• Includes hardware shutdown pin for power management

Analog To Digital Converters (ADC) Applications

• Portable data logging systems
• Battery-powered instruments
• Medical instrumentation
• 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 '+T' designation corresponds to tape-and-reel packaging as specified in distributor listings. Ensure the component matches the lead-free/RoHS-compliant status indicated by the '+' symbol in the ordering information section of the datasheet.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX149ACAP+ when an internal reference is required, distinguishing it from the MAX148 which needs an external reference. Choose this model over the MAX149AEAP+ if the application operates strictly within the commercial temperature range rather than the extended industrial range. Verify that the 10-bit resolution and 133ksps sampling rate meet the system's accuracy and speed requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX148/MAX149 family of low-power, serial 10-bit ADCs. It shares architectural similarities with the MAX1248/MAX1249 but offers eight channels instead of four. The MAX149 variant specifically differentiates itself by including an integrated reference buffer, whereas the MAX148 requires external reference components for operation.

Analog To Digital Converters (ADC) Replacement Considerations

MAX149AEAP+T: Offers the same electrical specifications but supports an extended temperature range (-40°C to +85°C). MAX148ACAP+: Requires an external reference voltage source instead of using the internal one.