Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Do the 12-bit analog inputs and outputs require an external Vref?

April 26, 2017analog external inputs outputs require vref

0

Posted

Do the 12-bit analog inputs and outputs require an external Vref?

1 Answer

0

Posted

No, the references are generated on board. The IOCP-74 uses the Linear Technology LTC1298 12-bit Analog-to-Digital converter chip which derives its reference voltage from the 5V Vcc supplied by the host computer. The 12-bit analog outputs are generated by a LTC1446 chip which includes an internal reference.