- http://forums.adafruit.com/viewtopic.php?f=31&t=12269http://forums.adafruit.com/….
- http://code.google.com/p/tc4-shield/
- http://www.arduino.cc/playground/Main/InterfacingWithHardware#adcdachttp://www.arduino.cc/….
- http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1282226147http://www.arduino.cc/…./YaBB.pl?num=1282226147
- http://interface.khm.de/index.php/lab/experiments/connect-a-ltc2400-high-precision-24-bit-analog-to-digital-converter/http://interface.khm.de/….
- http://www.gravitech.us/i2c128anco.html
- AD7705
- http://www.analog.com/en/analog-to-digital-converters/ad-converters/ad7705/products/product.htmlhttp://www.analog.com/…./product.html
- http://www.farnellnewark.com.br/ciconversorad16pdip,product,19M0890,4442523.aspxhttp://www.farnellnewark.com.br/….
- http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1255396691http://www.arduino.cc/…./YaBB.pl?num=1255396691
- MCP320x / MCP3201 / MCP3202 / MCP3204 / MCP3208
- LTC2440