| 摘要 |
A temperature sensing circuit "TSC" (202) is connected to a temperature m easuring and identification "TMID" device (204) to form a temperature measur ing and identification circuit (200). The TSC (202) includes a temperature s ensing element "TSE" (208) connected in parallel with a voltage clamping net work "VCN" (206) that limits the voltage across the TSE to an identification voltage within an identification voltage range. The TMID device (204) inclu des a voltage source (214) connected to a detection port (212) through a lim it resistor (216), and a current source (218) and voltage sensor (220) conne cted to the detection port (212). A controller (222) is configured to contro l the voltage source (214) and to receive a voltage measurement from the vol tage sensor (220). Based on the voltage measurement and the status of the vo ltage source (214), the controller (222) determines the temperature of the T SE (208) and an ID of the TSC (200), or determines that an error condition e xists.
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