SparkFun
Analog to Digital Converter - MCP3002
The MCP3002 is a 10-bit analog-to-digital converter (ADC) with a simple SPI interface, available in a breadboard-friendly 8-pin DIP package. Use it to add an...
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The MCP3002 is a 10-bit analog-to-digital converter (ADC) with a simple SPI interface, available in a breadboard-friendly 8-pin DIP package. Use it to add analog input capability to microcontrollers that lack an ADC, or to expand the number of available analog channels on your project.
Key Features
- 10-Bit Resolution – 1024 discrete levels for precise analog measurement
- SPI Interface – Simple 3-wire communication with any microcontroller
- 2 Input Channels – Read two analog signals independently
- Wide Supply Range – 2.7V to 5.5V operation
- High Sample Rate – Up to 75,000 samples per second
- Low Power Shutdown – Power-saving mode when not in use
- DIP Package – 8-pin DIP, breadboard and perfboard friendly
Specifications
- IC – Microchip MCP3002
- Resolution – 10-bit
- Channels – 2
- Interface – SPI (3-wire)
- Supply Voltage – 2.7V to 5.5V
- Sample Rate – Up to 75 ksps
- Package – 8-pin DIP
Ideal For
- Adding ADC capability to digital-only microcontrollers
- Expanding analog inputs on Arduino or Raspberry Pi
- Sensor data acquisition projects
- Breadboard prototyping
Package Contents
- 1× MCP3002 10-Bit ADC (8-pin DIP)
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- kSPS
- kSPS means thousands of samples per second, describing how many readings an ADC can take each second. It matters when choosing a board for fast-changing signals, because slow sensors do not need a high sample rate but audio-like or rapidly varying signals may.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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Sensors & Input
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