ADC0804 Single Channel 8-bit Analog to Digital Converter

The ADC0804 is a single-channel 8-bit ADC (Analog to Digital Converter) designed for interfacing analog sensors and signals with digital circuits and microcontrollers. It uses a successive approximation technique for conversion and operates with an internal clock or external clock source.

This IC accepts analog voltage input (0–5V typical) and provides an 8-bit digital output (0–255 levels). It is widely used in sensor interfacing, embedded systems, robotics, and data logging applications where analog signals such as temperature, pressure, or light intensity need to be converted into digital data.

🔹 Applications

• Sensor interfacing with microcontrollers (Arduino, Raspberry Pi, 8051, PIC)

• Robotics and automation systems

• Digital data acquisition and measurement systems

• Converting analog signals from transducers into digital form

• Educational projects and embedded system experiments

• IoT and smart devices requiring analog-to-digital conversion

🔹 Precautions

• Ensure supply voltage of +5V DC regulated

• Analog input voltage must not exceed Vcc (max 5V)

• Use proper reference voltage for accurate conversions

• Keep input signals noise-free for stable digital output

• Handle IC carefully to avoid ESD damage

• Do not exceed maximum clock frequency to prevent errors

🔹 Technical Specifications

• IC Type: 8-bit Analog to Digital Converter

• Package: DIP-20

• Resolution: 8-bit (0–255 steps)

• Number of Channels: 1 (single-ended)

• Input Voltage Range: 0V – 5V

• Conversion Method: Successive Approximation (SAR)

• Reference Voltage (Vref/2): Adjustable for scaling input range

• Conversion Time: ~100 µs (typical at 640 kHz clock)

• Clock Source: Internal or external clock input

• Output Type: Parallel 8-bit digital

• Supply Voltage (Vcc): 4.5V – 6V (5V typical)

• Pin Count: 20 pins

• Operating Temperature: 0°C to +70°C

📹 Tutorial Video

Watch ADC0804 ADC Tutorial

🔹 Related Categories

• Electronics Components

• IC’s

• Arduino and Accessories

• Tools and Accessories

🔹 Summary

The ADC0804 Single Channel 8-bit Analog to Digital Converter (DIP-20) is a reliable and widely used ADC IC for converting analog signals into digital form. With its successive approximation technique, adjustable reference voltage, and TTL compatibility, it is a perfect choice for sensor interfacing, robotics, IoT, and data acquisition projects. A must-have for every IC’s and embedded system collection.