ADC0809 8-Bit Analog-to-Digital Converter (ADC) with 8-Channel Multiplexer IC – DIP-28 Package

The ADC0809 is a high-performance 8-bit Analog-to-Digital Converter (ADC) integrated circuit that combines an 8-bit ADC and an 8-channel analog multiplexer in a single 28-pin DIP package. It is designed to convert analog voltage signals into digital data, enabling microcontrollers, processors, and digital systems to process real-world analog inputs accurately. With its built-in multiplexer, the ADC0809 can select and convert any one of eight analog input channels, making it an excellent solution for multi-sensor and data acquisition applications.

The ADC0809 operates using the successive approximation conversion technique, providing accurate and reliable digital conversion with 8-bit resolution (256 discrete levels). It typically operates from a single 5V power supply, making it compatible with TTL and CMOS logic systems as well as popular microcontrollers such as Arduino, 8051, AVR, PIC, and ARM-based development boards.

An integrated 8-channel analog multiplexer allows multiple analog sensors or signal sources to be connected to a single ADC, reducing the need for additional external switching circuitry. The IC also includes an internal address decoder and control logic for easy channel selection. Its on-chip sample-and-hold capability maintains a stable input voltage during the conversion process, ensuring accurate digital output.

With a typical conversion time of approximately 100 µs, the ADC0809 provides fast and efficient analog-to-digital conversion while maintaining low power consumption. Its simple interface and reliable performance make it suitable for embedded systems, industrial automation, robotics, measurement equipment, instrumentation, and educational electronics projects.

Features

• 8-bit Analog-to-Digital Converter (ADC)

• Integrated 8-channel analog multiplexer

• Successive approximation conversion method

• Standard 28-pin DIP package

• Single 5V DC power supply operation

• 8-bit digital output (256 resolution levels)

• On-chip sample-and-hold function

• Typical conversion time of 100 µs

• Low power consumption

• Easy interface with microcontrollers and digital systems

• TTL and CMOS compatible

• Reliable and stable conversion performance

Applications

• Data acquisition systems

• Multi-channel sensor interfacing

• Industrial automation

• Embedded systems

• Arduino and microcontroller projects

• Robotics and control systems

• Digital measurement instruments

• Process monitoring systems

• Environmental monitoring

• Educational and laboratory electronics projects