Hi Abhi,
thanks for your response. If you talk about leackage on diode B I do not think this will have an impact. To my understanding the temperature is measured via the voltage drop of diode A with a setpoint of 800uA. Depending on the temperature the drop will be higher or lower. The issue I see is that referenced to GND to voltage drop is negative and looking to the TMP435 we do measure a positive voltage referenced to GND where as the architecture in the custome device . I have for exampel never seen something like this and the bad thig is that the diode A is internally connected to + 0.9 Volt .
My question therefore is do we have a temp sensor which can support this or an application circuit how our current sensor portfolio could support it.
Looking forward to your feedback.
regards, Bertram