Adafruit ADS7830 8-Channel 8-Bit ADC with I2C - STEMMA QT / Qwiic

SKU: ADA5836 Brand: Adafruit

Many microcontrollers have ADCs these days, for reading analog/resistive sensors like potentiometers, thermistors, LDR light sensors, etc. but sometimes...

$12.60 AUD, inc GST

$11.45 AUD, exc GST

Available with a lead time
Expect dispatch between May 09 and May 13

Quantity Discounts:

10-25 $11.00 (exc GST)
25+ $10.65 (exc GST)

Many microcontrollers have ADCs these days, for reading analog/resistive sensors like potentiometers, thermistors, LDR light sensors, etc. but sometimes you need MOAR! Or maybe you're using a single board computer like a Raspberry Pi that has no ADCs at all!

The Adafruit ADS7830 8-Channel 8-Bit ADC with I2C is an affordable 8-channel ADC with I2C interface, so it's easy to include with any platform. Wire up to the SDA/SCL pins plus power and ground, only four wires required. If you need more than 8 channels, there's 2 address pins so you could have 4 x 8 = 32 total ADC channels with chain-able Stemma QT cables.

Note that this chip isn't the fanciest ADC on the market: you can get up 70 Ksamples per second (you'll need 3.4MHz I2C speed support for max speed rate), and only 8-bits of resolution, so it's good for rough sensor measurements. For example, this would definitely be a great way to add a ton of potentiometers or flex sensors to a build, but wouldn't be a good match for precision thermistor conversion.

To use it, check out Adafruit's Arduino library which will quickly let you read from any of the 8 channels as single ended inputs - or you can use differential mode which will use two adjacent pins for the positive and negative references. You can power the board from 3 or 5V power and logic, which will also act as the reference voltage and pullup voltage. Or you can change the reference voltage by cutting the jumper on the back and wiring to the breakout pad, as long as it is less than the power supply.

To get you going fast, Adafruit spun up a custom-made PCB in the STEMMA QT form factor, making it easy to interface with. The STEMMA QT connectors on either side are compatible with the SparkFun Qwiic I2C connectors. This allows you to make solderless connections between your development board and the ADS7830 or to chain it with a wide range of other sensors and accessories using a compatible cable.

QT Cable is not included, but Adafruit have a variety in the shop.

Comes with a bit of 0.1" standard header in case you want to use it with a breadboard or perfboard. Four mounting holes for easy attachment.

Technical Details

ADS7830 Specifications:

Resolution (Bits) 8
Sample rate (max) (ksps) 70
Number of input channels 8
Interface type I2C
Architecture SAR
Input type Pseudo-Differential, Single-ended
Multichannel configuration Multiplexed
Reference mode External, Internal
Input voltage range (max) (V) 5.25
Input voltage range (min) (V) 0
Operating temperature range (°C) -40 to 85
Analog/Digital supply (min) (V) 2.7
Analog/Digital supply voltage (max) (V) 5.25
SNR (dB) 50

Product Dimensions: 30.5mm x 17.7mm x 4.7mm / 1.2" x 0.7" x 0.2"

Product Weight: 2.1g / 0.1oz

Product Comments

Start the conversation

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

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$6+ for Standard Post (typically 6+ business days, tracked)
$10+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

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

$11+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase 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
Adamstown
NSW, 2289
Australia

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!

Write Your Own Review