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Dual Digital Potentiometer (100K)

SKU: DFR0520

$8.02 AUD, inc GST
$7.29 AUD, exc GST

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Dual Digital Potentiometer (100K)
8.02 AUD

SKU: DFR0520

$8.02 AUD, inc GST
$7.29 AUD, exc GST


  • $6.95 Standard (2-4 days, tracked)
  • $9.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.


Digital potentiometer is also called "Digital Pot" in short. It is a kind of mixed signal IC, which is able to dynamically change the internal resistors through MCU like Arduino. It can be applied to applications such as LED DC dimming, linear stable voltage source, oscillator, low pass filter or differential amplifier.
This breakout employs MCP42100 internally manufactured with two individual 100K digital pot. It features as small dimension and low power consumption. With our tutorial and sample code provided, you can quickly apply this module to your project. Compared to the traditional mechanical potentiometer, the digital pot features as flexible (program control), small size (ICs) and high reliability (without mechanical parts). It can replace the tradition one in many applications. Digital pot is usually used to change the sound volume in audio devices, such as smart loudspeaker, cell phone, and music player.
In addition, with a proper design op-amp circuit, the digital pot can also be applied to change some key parameters of the circuit dynamically, such as LED DC dimming (output current), linear stable voltage source (output voltage), oscillator (frequency and amplitude), low pass filter (bandwidth) and differential amplifier (gain).This breakout employs MCP42100 internally manufactured with two individual 100K digital pot POT0 and POT1. Each pot has 256 taps with a resistor of 100KΩ. It supports wide voltage supply (DC 2.7V - 5.5V) compatible with MCU of 3.3V and 5V. The breakout features as small size (20.0mm*18.0mm) and reserves the SO pin for multiple breakouts being configured in daisy-chain connection. If you have a I/O shield in hand, this breakout can be easily connected to it with the attached 5 pin male to male cable.

Arduino Connection Diagram


  • Low power, small dimension
  • Dual Digital Potentiometer
  • Compatible with 3.3V or 5.0V power supply

  • Sound volume or tone tuning
  • LED DC dimmer, contrast control
  • Programmable voltage source, filter, differential amplifier
  • Specification

  • Supply Voltage: 2.7~5.5V DC
  • Static Operation Current: < 1 μA
  • Potentiometer Value: 100 KΩ
  • Resolution: 8 bits,256 taps for each potentiometer
  • Number of Potentiometers: 2
  • Interface: SPI
  • Operation Temperature: -40℃~85℃
  • Dimension: 20.0mm*18.0mm
  • Documents

    Product wiki
    More Documents

    Parts List

  • Dual Digital Pot (100K) V1.0 x1
  • 5P male to male cable x1
  • Documentation and Resources:

    Product Comments

    Exact shipping can be calculated on the view cart page (no login required).

    We deliver Australia-wide with these options:

    • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
    • $6.95 for Standard Post (2-4 days, tracked)
    • $9.95 for Express Post (Overnight for most of Australia, 2+ days for rural, tracked)
    • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

    International Orders - the following rates are for New Zealand and will vary for other countries:

    • $11.49 for Pack and Track (3+ days, tracked)
    • $16.50 for Express International (2-5 days, tracked)

    If you order lots of gear, the postage amount might increment based on the weight of your order.

    Our physical address (here's a PDF which includes other key business details):

    Unit 18, 132 Garden Grove Parade
    NSW, 2289

    Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

    Have a product question? We're here to help!