MCP4921-E/SO 12-bit SPI DAC, SOP-8
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Prices updated: 12 Oct 2026
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About this product
Microchip MCP4921 is a single-channel 12-bit voltage-output digital-to-analog converter with an SPI interface. It turns digital codes from a microcontroller into an analog voltage, and is used for set-point control, offset adjustment and sensor calibration. This version uses the SOP-8 surface-mount package.
Specifications
- Resolution
- 12-bit / 12 بت
- Output channels
- 1 / 1
- Interface
- SPI / SPI
- Supply voltage
- 2.7 V to 5.5 V / 2.7 إلى 5.5 فولت
- Operating current
- 175 µA (typ) / 175 µA (نموذجي)
- Output settling time
- 4.5 µs / 4.5 µs
- Package
- SOP-8 (surface mount) / SOP-8 (تركيب سطحي)
Frequently asked questions
How do I connect it to an Arduino?
Connect the SPI signals (SCK, SDI/MOSI and CS), power, ground, VREF and LDAC as shown in the datasheet pinout. Use the Arduino SPI library to send 16-bit words.
How is the output voltage determined?
The output is set by the VREF input voltage and the 12-bit code, so the output range is referenced to VREF. Check the datasheet for the exact transfer function.
