Other Parts Discussed in Thread: ADS1220, ADS1120, ADS1118
We need to measure the temperature using T-type thermocouple. This thermocouple will be used in medical application and will be touching internal of human being.
We are using MCP9601 from microchip which is causing issues when the thermocouple is touched at the tip, open air measures fine. Even saline by itself is fine but as soon as I dip my hand with the thermocouple in saline, short circuit triggers.
We have used LTC2983 before and that doesn't cause any such issues by touching. But due to cost an availability issues we moved away from it.
I think for LTC2983 one of the thermocouple lead was grounded design vise, it was single ended so we didn't see any issue.
I am planning on switching to TI module, which based on availability would be ADS1220 or ADS1120.
I want to buy the eval board for ADC1220 and test it with thermocouple by touching the tip dipping it in saline etc.
Will I be able to hook up thermocouple to ADC1220EVM and test it straight away? Its better I ask and then order, hence the question.
If you think its not a good choice please suggest the part which is available to purchase for EVM and product build.