MAX131CMH+D

ADCs/DACs - Special Purpose Overview

The MAX131CMH+D is a low-power, 3 1/2 digit analog-to-digital converter (ADC) with an integrated LCD driver and bandgap reference. It operates on a single supply voltage ranging from 4V to 6V and is housed in a 44-pin MQFP package. The device features a built-in precision bandgap reference, eliminating the need for external reference components. It supports direct driving of common-source liquid crystal displays and includes a multiplexed display interface. The component is designed for applications requiring high accuracy and low power consumption within a compact surface-mount form factor.

ADCs/DACs - Special Purpose Feature Summary

• Integrates a 3 1/2 digit ADC with a precision internal bandgap reference
• Includes dedicated drivers for direct connection to common-source LCDs
• Operates efficiently on a single low-voltage power supply
• Provides a multiplexed interface for simplified display control

ADCs/DACs - Special Purpose Applications

• Portable digital panel meters
• Battery-powered measurement instruments
• Industrial process control displays
• Low-power data acquisition systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'D' indicates tray packaging when reviewing distributor listings. Confirm RoHS compliance status through official manufacturer documentation. Check for moisture sensitivity level requirements during storage and handling. Ensure the supplier provides valid traceability records for the Analog Devices or Maxim Integrated brand. Validate that the component matches the exact 44-MQFP pinout specifications.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a combined ADC and display driver solution is required to reduce board space. Consider the MAX131 over discrete solutions if system power budget is constrained by single-supply operation. Evaluate the 3 1/2 digit resolution against application accuracy needs. Compare thermal dissipation capabilities within the MQFP package against ambient operating conditions.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX13x series of specialized display driver ICs from Maxim Integrated. It serves as a successor or alternative to earlier integrating ADCs like the ICL7135, offering improved integration by including the reference voltage source internally. The series targets cost-sensitive applications where minimizing external component count is critical for design efficiency.

ADCs/DACs - Special Purpose Replacement Considerations

The ICL7135CMH+D is a functional equivalent with similar display driver capabilities but may require external reference components. Verify pin compatibility and software interface differences before substitution. Ensure voltage range and package dimensions match the existing design constraints.