DFRobot - dual digital potentiometer 100 kΩ
- Product Code:
- 111100287
Properties
Other features
- Brand
- DFRobot
Description
The digital potentiometer is a type of mixed IC signal which is able to dynamically change the internal resistors via MCU. It can be used for applications such as dimming of the LEDs, a stable source of line voltage, the oscillator, the low pass filter or a differential amplifier. It has a resistance of 100 kΩ. The digital potentiometer can replace the traditional, analog one in many applications, it can be used, for example, to change the volume in audio devices such as a smart speaker, mobile phone and music player.
ConnectionThanks to the suitable draft of the circuit of the operational amplifier, a digital potentiometer can be used to dynamically adjust various key parameters of the circuit such as the dimming of the LED, an oscillator, and so on. It uses the built-in MCP42100 with two individual digital potentiometers of 100 kΩPOT0 and POT1. Each potentiometer has 256 steps with a resistor of 100kΩ. It supports supply voltage from 2.7 V to 5.5 V, compatible with MCU 3.3 V and 5 V.
An example of wiring diagram with DFRduino Uno board.
PinsThe module communicates via SPI interface. The supply voltage ranges from 2.7 V to 5.5 V.
PIN Description VCC Supply voltage from 2.7 V to 5.5 V. GND Ground. SI Serial output of data. CS Chip Select. CCS A serial clock output. SO Serial input of data. PAx Potentiometer terminal A (x=0,1). ATS Potentiometer terminal B (x=0,1). PWx Potentiometer wiper terminal (x=0,1). Specification- Supply voltage: from 2.7 V to 5.5 V DC
- Static current: 1µA
- Resistance: 100 kΩ
- Resolution: 8 B, 256 steps for each potentiometer
- Number of potentiometers: 2
- Interface: SPI
- Working temperature: from -40℃ to 85℃
- Dimensions: 20 x 18 mm
- The website of the manufacturer of DFRobot DFR0520
- User manual
