This document describes the on-chip thermal diode that is incorporated in Analog Devices ADSP-214xx SHARC® processors to monitor the die temperature and take appropriate actions if it goes beyond a threshold value.
This Engineer-to-Engineer Note describes how to use the on-chip thermal diode in ADSP-214xx SHARC processors to monitor die temperature. It details the interfacing of this thermal diode with digital temperature sensors, such as the ADM1032, to manage thermal conditions and prevent overheating.
| Processor Model | ADSP-214xx SHARC processors |
|---|---|
| Thermal Diode Type | grounded collector, PNP bipolar junction transistor |
| Thermal Diode Pins | THD_P (emitter) and THD_M (base) |
| Sensor Example | ADM1032 |
The on-chip thermal diode discussed applies to ADSP-214xx SHARC processors only.
The THD_P pin connects to the sensor's D+ pin and the THD_M pin connects to the sensor's D- pin.
Systems can be configured with a dedicated host controller or without a host controller where the processor communicates directly.