Device identification and temperature sensor circuit

摘要

An integrated circuit includes a device identification circuit and a temperature sensor diode connected in parallel from a common node. The device identification circuit includes a resistor connected to a diode-connected transistor. The device identification circuit and the temperature sensor diode are adapted to not be simultaneously operating in an ON state. A first voltage is applied to the common node to place the device identification circuit in an ON state and place the temperature sensor diode in an OFF state to identify the integrated circuit. A second voltage is applied to the common node to place the device identification circuit in an OFF state and place the temperature sensor diode in an ON state to determine a temperature of the integrated circuit.

主权项

1. A method for identifying an integrated circuit and determining-a temperature of the integrated circuit, the method comprising:
using an identification circuit of the integrated circuit to identify the integrated circuit; using a temperature sensor of the integrated circuit to determine the temperature of the integrated circuit, wherein the identification circuit and the temperature sensor are connected in parallel; operating the identification circuit to identify the integrated circuit while simultaneously preventing electrical current from flowing through the temperature sensor such that the temperature sensor is not operating; and operating the temperature sensor to determine the temperature of the integrated circuit while simultaneously preventing electrical current from flowing through the identification circuit such that the identification circuit is not operating.