Temperature detection circuit

DETAILED DESCRIPTION The above objectives can be met by a temperature detection circuit described below.
The circuit comprises: a first current source coupled to a detection node; a second current source coupled in series to the first current source and coupled to the detection node, the second current source having a temperature coefficient different from that of the first current source; and a detector coupled to the detection node.
The above objectives can also be met by a circuit described below.
The circuit comprises: a first current source coupled to a detection node; a second current source coupled in series to the first current source and coupled to the detection node, the second current source having a temperature coefficient different from that of the first current source; a detector having an input terminal coupled to the detection node and an output terminal for providing a detection signal; and a hysteresis circuit coupled to the output terminal and detection node, the hysteresis circuit comprising: a third current source; and a switch for supplying the current from the third current source to the detection node when the detection signal is at a predetermined signal level.