How to order Contact us Distributors Reviews
Register / Login

Select currency

If you'd like to view estimated pricing in other currencies then please select a currency below below.

GBP USD EUR JPY AUD NOK CHF NZD CAD

Please note:

  • Currency conversions are estimates and for information only
  • Your order will be billed in GBP
  • All prices exclude VAT / other local sales taxes
  • Shipping calculated during checkout


Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic

by Adafruit
An image of Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic An image of Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic An image of Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic An image of Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic An image of Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic

Measuring voltage and adjusting it is what electronics is all about so you won’t get far without friends like the Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC combo. 

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.

The PCF8591 is not the highest quality ADC/DAC - with only 8 bits of measurement, but it works well and is fairly inexpensive so for many basic uses it will work just fine.

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. If knobs are just the thing to complete your project, just add a PCF8591 and some potentiometers and you’re ready to twist, turn, twiddle and tweak to get things just right.

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. The possibilities abound! 

 Wow!” you say, ”That sounds great, but surely with all that fun in one small package, I can only use one at a time.”

Well, my friend, I’ve got good news. 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! That’s up to a a whopping 32 channels of analog measurement and 8 channels of analog signal generation! If you do decide to go all out with your project, you won’t break the bank because the PCF8591 breakouts are reasonably priced compared to some higher-end ADCs.

As if 4 ADCs and one DAC in a single package weren’t enough, Adafruit have made it even easier to use by mounting the PCF8591's chonky SO16 surface mount package onto a breakout with standard 0.1”/2.54mm headers and SparkFun Qwiic compatible STEMMA QT connectors for the I2C bus, making it simple to integrate with your project. Using the wiring diagrams and example code on the pages that follow, you’ll be able to use the Python and Arduino libraries to easily measure as many voltages as you need (as long as that number is 32 or less).

TECHNICAL DETAILS

Product Dimensions: 25.4mm x 22.8mm x 4.6mm / 1.0" x 0.9" x 0.2"

Product Weight: 2.5g / 0.1oz

Reviews

User photos

Measuring voltage and adjusting it is what electronics is all about so you won’t get far without friends like the Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC combo. 

ADA4648

You must register for an account and be logged in to view pricing or place an order on the Pimoroni Wholesale store.

If you represent a school or university, a business, or reseller of Maker products then you can sign up for a wholesale account.

If you already have an account you can login to your account here.

Alternatively the easiest way to get your hands on the products we offer is to order them directly from our customer facing online store.

SKU
ADA4648
EAN
0769894015926
Brand
Adafruit
Stock available
0 units
Backorder not allowed on this product
Weight
10g

Video introduction

Guides & tutorials

Search

 

Region

Your search returned no results.

Subscribe

We'll keep you up to date with new product launches!

The good ship

We've been sailing the Maker seas offering our wares since 2012.

  • read about our history
  • what our customers say
  • find a local distributor
  • contact our business team

We manufacture all of our products locally at our workshop in Sheffield, UK

Under one roof

Pimoroni are your one-stop shop for bulk and education purchasing of Raspberry Pi, Pimoroni, micro:bit, Adafruit, Sparkfun, and many other brands.

If you have any questions about what we offer then drop us a line.

Pimoroni Ltd

Unit 1, Parkway Business Park,
Parkway Drive,
Sheffield,
S9 4WN,
United Kingdom

Registered in England and Wales:
Company №: 07510759
VAT Reg №: GB 140 8707 21