MAX140CMH+D

ADCs/DACs - Special Purpose Overview

The MAX140CMH+D is a 3½-digit analog-to-digital converter (ADC) integrated circuit designed for LED display applications. It features an internal bandgap reference and a charge-pump voltage generator, eliminating the need for external components typically required in dual-slope conversion architectures. The device operates on a single supply voltage ranging from 2.5V to 7V and supports commercial temperature ranges of 0°C to 70°C. Housed in a 44-MQFP package measuring 10x10 mm, it provides direct drive capabilities for common-anode or common-cathode LED displays.

ADCs/DACs - Special Purpose Feature Summary

• Integrates a 3½-digit dual-slope ADC with internal reference and charge pump
• Supports direct driving of LED displays without external multiplexing drivers
• Operates on a single power supply within specified voltage limits

ADCs/DACs - Special Purpose Applications

• Digital panel meters and industrial instrumentation displays
• Consumer electronics requiring simple numeric readouts
• Embedded systems with limited component count constraints

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'D' against the manufacturer's current product status documentation to confirm availability and lifecycle stage. Ensure the 44-MQFP package dimensions align with PCB layout requirements. Cross-reference the operating temperature range with system environmental specifications to confirm suitability for the intended application environment.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a complete solution for 3½-digit LED display driving is required without external logic or driver ICs. Consider the internal charge pump efficiency and reference accuracy relative to measurement precision needs. Evaluate the 44-pin footprint against available board space compared to alternative packages like the SOIC variants if pin count permits flexibility.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX140 family of 3½-digit A/D converters produced by Maxim Integrated, now part of Analog Devices Inc. The series is characterized by its ability to perform high-precision conversions using a dual-slope method while integrating necessary support circuitry. The CMH variant specifically denotes the commercial temperature grade and MQFP packaging option within this product line.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.