A TI ADS-7830 Analog to Digital Converter on an I2C Bus with 8 channels, each with a resolution of 8 bits.

An external or internal 2.5V reference is selectable via I2C command, and the external reference is connected to a 3-way jumper that you can cut with a razor blade and re-solder to a different position.

You can also use the 8th channel as a convenient input for the ADC's reference line.

We have a free Arduino Library, and ANSI C code examples available here: ADC Arduino Library

Features Include:

• Address selection via dip-switch
• All 8 channels accessible from front-facing socket
• On the fly selection (via I2C) between a built-in 2.5 V reference and various external references
• Differential or single ended measurement modes
• Supports high-speed I2C
• Also comes in higher resolution variants

Note to buyers:
Use your ADC-X Add-on with BoardX or any standard breadboard. What is BoardX?

BoardX is a collection of electronic circuit boards that stack on top of one another to share resources, communicate, and extend the functionality of one another. This system is built on the BoardX Motherboard that acts as both an electrical and structural foundation.

What add-on modules are available?

• FRAM-X - Non volatile memory
• ADC-X - 8 channel converter
• XBee-X - GPS + Wifi + Zigbee + Bluetooth compatible
• AVR-X - Atmega328P, with Arduino
• PROTO-X - A perforated soldering add-on for creating your own add-ons

What is the difference between BoardX and other boards like Arduino?

Unlike similar products (but much like a familiar PC system), the motherboard does not come with a processor pre-installed. Processors come as simple, low cost add-on boards, which allow any processor (or multiple processors) to be used with the system.