ICL7106CQH-D

ADCs/DACs - Special Purpose Overview

The ICL7106CQH-D is a monolithic 3½-digit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. under the Maxim Integrated brand. It utilizes dual-slope integration architecture to provide high-precision conversion with a resolution of 2000 counts. The device features a true differential input and reference, ensuring accurate measurements for bridge sensors and low-level signals. Designed for single-supply operation at 9V, it integrates a 2.8V reference voltage source, clock circuitry, and segment drivers directly on-chip. This integration allows the component to drive LCD displays without external driver circuits, making it suitable for digital panel meters and instrumentation applications.

ADCs/DACs - Special Purpose Feature Summary

• 3½-digit resolution with ±1 count non-linearity error
• Dual-slope integration architecture with auto-zero function
• Integrated 2.8V reference voltage and clock oscillator
• Direct drive capability for LCD displays via parallel interface

ADCs/DACs - Special Purpose Applications

• Digital panel meters and digital voltmeters
• Industrial process control instrumentation
• Automation systems for runoff measurement and hydrological analysis

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'CQH-D' against official datasheets to confirm package type and temperature range. Distributor listings may vary in availability status. Ensure compatibility with 9V single-supply requirements and LCD display interfaces before procurement.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a 3½-digit LCD display interface is required. Compare with ICL7107 if LED display driving is needed instead. Verify that the PDIP or PLCC package options meet the PCB layout constraints. Confirm that the 9V supply voltage aligns with the system power design.

ADCs/DACs - Special Purpose Part Context

The ICL7106 series represents a widely adopted standard for low-cost, high-accuracy A/D conversion in instrumentation. It succeeded earlier discrete solutions by integrating necessary support components like references and clocks. The CQH variant typically denotes a plastic leaded chip carrier package, distinguishing it from the PDIP versions found in other listings.

ADCs/DACs - Special Purpose Replacement Considerations

The ICL7107 serves as a functional alternative for applications requiring LED display driving rather than LCD. Other 3½-digit ADCs may require external reference and clock components, increasing bill of materials complexity.