MAX140CMH+TD

ADCs/DACs - Special Purpose Overview

The MAX140CMH+TD is a discontinued integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It functions as an LED display driver and incorporates a 3½-digit analog-to-digital converter (ADC) with an internal reference and charge pump. The device utilizes a dual-slope conversion architecture to achieve high precision, characterized by a maximum linear error of 0.0015%. It features a 24-bit resolution and provides parallel word output in binary format. The component is housed in a 40-pin plastic Dual In-Line Package (DIP).

ADCs/DACs - Special Purpose Feature Summary

• Integrates a 3½-digit ADC with built-in reference and charge pump for simplified system design.
• Employs dual-slope conversion technology to ensure high accuracy and noise rejection.
• Provides parallel digital output compatible with standard LED display interfaces.

ADCs/DACs - Special Purpose Applications

• High-precision digital panel meters
• Industrial process control displays
• Scientific instrumentation readouts

ADCs/DACs - Special Purpose Procurement Notes

This part number is officially listed as obsolete or discontinued by the manufacturer. Verification of availability should focus on surplus distributors or secondary markets rather than direct factory orders. Buyers must confirm the specific revision and lot date code due to potential variations in legacy stock. Ensure that the source documentation explicitly identifies the component as the MAX140CMH+TD variant to avoid confusion with similar legacy Maxim parts.

ADCs/DACs - Special Purpose Selection Notes

Designers requiring this specific interface and performance profile should evaluate current replacement families from Analog Devices or other manufacturers offering modern 3½-digit ADC solutions. Considerations include pin compatibility, package footprint changes, and updated power supply requirements. Verify if newer devices offer improved linearity or lower power consumption while maintaining the necessary parallel output format for existing display hardware.

ADCs/DACs - Special Purpose Part Context

The MAX140 series belongs to a family of specialized analog circuits designed for measurement applications. This specific model represents a legacy solution from Maxim Integrated, now under Analog Devices. It was engineered for environments demanding reliable, low-noise digitization of analog signals directly into a format suitable for visual indication without complex microcontroller processing overhead.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Due to the discontinued status, no direct official replacements are listed. Engineers should consult current product selection guides for modern equivalents.