Hi Everyone
I have a strange issue with using the TI MSP430F5310 ADC and the TI LM57 temp sensor. the Rsense values are at 46.4k and 499.9k for Rsense1/Rsense2.
The issue is that, when my device(board) is first powered on, the LM57 reports a very low reading. Then while my debug-board is doing nothing, eventually, the LM57 will hit steady state maybe 2-3 minutes and report atleast 7 degrees (C) higher.
Does anyone know if this is typical characteristics of the LM57 temperature sensor having to ramp up when power is applied?
My debug board is also using two other sensors: CAT34TS02 but they are digital (no resistors) and use I2C for commuication. These temp sensors don't seem to have any ramp up issues.
Once the steady state has been reached with LM57 and CAT34TS02, they seem to respond correctly because the starting temperature and ending temperature (after some processing), shows that they are still 5-6 degrees difference apart from start to finish.
Thanks