ICL7109CMH+D

Analog To Digital Converters (ADC) Overview

The ICL7109CMH+D is a monolithic 12-bit analog-to-digital converter manufactured by Analog Devices Inc./Maxim Integrated. It utilizes a dual-slope integration architecture to provide high-precision conversion with differential input capabilities. The device features a parallel data interface and operates on ±5V power supplies. Designed for surface-mount applications, it is housed in a QFP-44 package. The component supports direct microprocessor interfacing through chip select and byte enable inputs, facilitating efficient data acquisition in embedded systems.

Analog To Digital Converters (ADC) Feature Summary

• Monolithic 12-bit resolution with dual-slope integration architecture
• Direct microprocessor bus interface via three-state binary outputs
• Supports UART handshake mode for serial remote data logging
• Differential analog input configuration

Analog To Digital Converters (ADC) Applications

• Microprocessor-based digital panel meters
• Remote data logging systems requiring serial transmission
• Industrial process control instrumentation
• Precision measurement equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix CMH+D against official datasheets to confirm the QFP-44 surface-mount package and lead-free compliance. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Confirm availability status as distribution channels may vary. Validate that the +D designation aligns with current environmental standards required for the target assembly.

Analog To Digital Converters (ADC) Selection Notes

Select this component when 12-bit resolution and microprocessor compatibility are required in a compact surface-mount form factor. The ICL7109CMH+D is suitable for designs needing direct parallel or UART serial output without external latches. Consider the QFP-44 package constraints and ±5V supply requirements during schematic design. Evaluate thermal dissipation needs relative to the 500mW power rating in the final enclosure.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ICL7109 series of integrating ADCs from Maxim Integrated, now part of Analog Devices. The series is known for replacing older discrete solutions in precision metering. The CMH variant specifically denotes the quad flat pack surface-mount option, distinguishing it from through-hole DIP packages like the CPL+. This family targets cost-sensitive yet accurate data acquisition applications.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes include the ICL7109CPL+ for through-hole implementations. Verify pinout compatibility before swapping between package types. Cross-reference with other 12-bit dual-slope converters if the specific Maxim/Analog Devices source is unavailable.