ICL7109EQH+D

Analog To Digital Converters (ADC) Overview

The ICL7109EQH+D is a monolithic 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It utilizes a dual-slope integration architecture to provide high-precision data conversion with differential input capabilities. The device features a sampling rate of 30 samples per second and operates on ±5V power supplies for both analog and digital sections. Designed for direct interfacing, it offers parallel 3-state binary outputs compatible with microprocessor buses. The component supports external reference types and includes polarity and over-range status indicators. It is housed in a compact surface-mount package suitable for space-constrained applications.

Analog To Digital Converters (ADC) Feature Summary

• Dual-slope integrating architecture ensures high noise rejection and measurement stability
• Direct microprocessor interface capability via chip select and byte enable inputs
• Supports UART handshake mode conversion for serial data transmission applications
• Provides 3-state binary outputs with polarity and over-range status flags

Analog To Digital Converters (ADC) Applications

• Remote data logging systems requiring serial communication interfaces
• Precision panel meters and industrial instrumentation
• Microprocessor-based data acquisition systems
• High-resolution voltage measurement circuits

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix EQH+D against official manufacturer documentation to confirm pinout compatibility and thermal characteristics. Ensure that the source document explicitly identifies this exact part number variant rather than assuming equivalence with standard ICL7109 packages. Cross-reference the datasheet revision date to validate current manufacturing status and RoHS compliance details before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution with dual-slope integration is required for low-frequency precision measurements. Consider the ±5V supply requirement and parallel interface needs during system design. Evaluate the need for UART compatibility if serial transmission is preferred over direct bus connection. Verify that the operating temperature range meets the environmental specifications of the target application environment.

Analog To Digital Converters (ADC) Part Context

The ICL7109 belongs to a family of integrating ADCs designed for microprocessor compatibility. This series replaces older integrating converters in panel meter applications. The device integrates the ramp generator and control logic, simplifying circuit design. It serves as a bridge between analog signals and digital processing units in precision measurement environments.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other 12-bit dual-slope ADCs only after consulting the official datasheet for pinout and electrical parameter alignment.