This 12-BIT, 8-Channel ADC Shield plus EEPROM is designed for Arduino and compatible Microcontrollers.

The shield has (8) 12-Bit ADC channels accessed via SPI and can be configured to use an external Voltage Reference up to 5V. It supports a sample rate of 100 ksps and has 8 inputs in single-ended mode or 4 inputs in differential-pair mode. MAX analog input voltage is 5V or equal to the reference voltage. It is based on the Microchip MCP3208 A/D Converter IC.

It also has an onboard 256Kb EEPROM, accessible via I2C with selectable address. It can be used to store readings on-board the shield or to hold configuration information.

MCP3208

• 8 analog input channels 100 ksps max. sampling rate at VDD = 5V
• 12-Bits of resolution (when powered with 5V.)
• Max analog input voltage = 5.2v
• Analog inputs programmable as single-ended or pseudo-differential pairs
• On-chip sample and hold
• SPI serial interface (modes 0,0 and 1,1)
• Low power CMOS technology 500 nA typical standby current, 2 µA max. 400 µA max. active current at 5V Industrial temp range: -40°C to +85°C

SHIELD FEATURES

• 5V, VREF, and GND connection terminals
• Board can back-power Arduino via 5V and GND connection terminals
• Filter capacitors on 5V input/output line
• Green power LED
• High-quality screw-terminals on all channels (COLOR MAY VARY)
• Select from 4 SPI CS pins via jumper
• 256Kb EEPROM24 onboard (24LC256)
• Select from 2 I2C addresses via solder jumper

Shield comes pre-assembled.

You can find example Arduino sketches, an EEPROM24 library, and design files on my Github site, linked in the documentation section. You will need to install the EEPROM24 library for some of the example scripts to work: