I would like to read temperature from thermistor connected to catheter (medical device)
using the following thermistor P12358CT-ND, THERMISTOR NTC 10K OHM 5% 0201
MCU is arduino uno board
after reading I found the AD7400 and AD7400A and have a few question
1) for what and how I use the internal clock? (or way both of them have MCLKI if one does have internal clock?)
2) are they good enough for medical 60601-1 ISO (5 kv resistance), can not find "60601" in their spec
I am not and HW person so I am looking for simple EVM just plug and run (a full solution)
3) is there a ADC fully integrated 5 kV rms signal and power isolated like the adm2687E
4) I found the EVAL-AD7400/AD7401, how do I connect isolated dc to the digital side (simple dc-dc convertor?)
5) is there a description how to connect it to MCU including power isolation (or better a link for a EVAL doing it already)
6) how to connect it to thermistor (just plug or need to add some components?)
5) any other whole solution board ideas
Have a look into this : Eye-controlled-Gaming
The internal clock on the AD7400 and AD7400A is used to clock the converter internally and also to allow the user to clock out the data bits from the modulator into an FPGA for example or other receiving device.
This clock typically runs at a 10MHz rate. If you prefer to use an external clock to either use a faster clock up to 20MHz or to synchronise multiple devices then the AD7401 and AD7401A are available.
All of these devices are rated to 5kVrms for 1 minute per UL1577.
No ADI does not have a device with ADC and isoPower integrated in one package at this time.
Page 3 of the EVAL-AD7400A/AD7401A decribes how external power supplies are required for Vdd1 and Vdd2.
finally used ADuM6401 (SPI) + EVL board + ADC and connected it to Arduino