Adafruit Quad ADC & DAC - Qwiic
The Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC combo is an Analog to Digital Converters help by measuring an analog voltage and turning it into something a microcontroller like a Metro or Arduino can understand. If you’re using a single board computer like a Raspberry Pi, you might not have any other way to measure a voltage because even though they are well equipped for digital circuits, many boards of that type don’t have any pins that can measure analog voltages.
Adding a PCF8591 to your electronics project will give you not one, not two, but four 8-bit analog inputs that you can use to measure voltages from. Along with four 8-bit ADC channels, the PCF8591 comes complete with an 8-bit Digital to Analog Converter converter as well! Not only can you measure voltages, but now you can create them just as you want them. You can even use the DAC and ADC together to create an input to a circuit and measure the results with the ADC. On the back of each PCF8591 breakout are three jumpers that allow you to set the I2C address, allowing the use of eight PCF8591s on the same I2C bus.
Quick Spec
- Operating Supply Voltage: 2.5 ~ 6V
- Low Standby Current
- Serial input and output via I2C-bus
- I2C address selection by 3 hardware address pins
- Max sampling rate given by I2C-bus speed
- 4 analog inputs configurable as single ended or differential inputs
- Auto-incremented channel selection
- Analog voltage range from VSS to VDD
- On-chip track and hold circuit
- 8-bit successive approximation A/D conversion
- Multiplying DAC with one analog output
- Dimensions: 25.4 x 22.8 x 4.6mm
- Net Weight: 5g
Wiring Diagram

Resources
Shipping List
- 1 x Adafruit Quad ADC & DAC - Qwiic
Adafruit Quad ADC & DAC - Qwiic
- Brand: Adafruit
- Product Code: AF4648
- Weight: 0.005kg
- Product Status : Active
Stock
Warehouse | Stock Status | Location |
---|---|---|
Centurion | No Stock | |
Stellenbosch | Limited Stock | U69 |
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R146.00 (Inc Tax: R167.90)
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Tags: adafruit, quad, adc, dac, qwiic, analog, digital, analog to digital, 8-bit, 8 bit, pcf8591, i2c