Temperature detecting circuit
First Claim
1. A temperature detecting circuit for use with a semiconductor device, the circuit comprising:
- a reference and detection voltage generator for generating a reference voltage corresponding to a first and a second reference current, and having a variable resistance circuit for changing at least two detection currents based on at least two temperature detection codes fed thereto to generate at least two detection voltages corresponding to the changed at least two detection currents and the second reference current;
a temperature detection signal generator for comparing each of the at least two detection voltages with the reference voltage to generate at least two temperature detection signals; and
a temperature detection controller connected to the temperature detection signal generator for detecting an operating temperature of the semiconductor device and generating the at least two temperature detection codes in response to the at least two temperature detection signals, wherein the at least two temperature detection codes are output and fed back to the reference and detection voltage generator.
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Accused Products
Abstract
A temperature detecting circuit is provided. The temperature detecting circuit includes a reference and detection voltage generator for generating a reference voltage corresponding to a first and a second reference current, and changing first to M-th (M being a natural number) detection currents based on first to M-th temperature detection codes to generate first to M-th detection voltages corresponding to the changed first to M-th detection currents and the second reference current; a temperature detection signal generator for comparing each of the first to M-th detection voltages with the reference voltage to generate first to M-th temperature detection signals; and a temperature detection controller for detecting an operation temperature of a semiconductor device while changing the first to M-th temperature detection codes in response to the first to M-th temperature detection signals from the temperature detection signal generator.
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Citations
20 Claims
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1. A temperature detecting circuit for use with a semiconductor device, the circuit comprising:
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a reference and detection voltage generator for generating a reference voltage corresponding to a first and a second reference current, and having a variable resistance circuit for changing at least two detection currents based on at least two temperature detection codes fed thereto to generate at least two detection voltages corresponding to the changed at least two detection currents and the second reference current; a temperature detection signal generator for comparing each of the at least two detection voltages with the reference voltage to generate at least two temperature detection signals; and a temperature detection controller connected to the temperature detection signal generator for detecting an operating temperature of the semiconductor device and generating the at least two temperature detection codes in response to the at least two temperature detection signals, wherein the at least two temperature detection codes are output and fed back to the reference and detection voltage generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A temperature detecting circuit for use with a semiconductor device, the circuit comprising:
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a reference and detection voltage generator for generating a reference voltage corresponding to a first and a second reference current, and having a variable resistance circuit for changing a first and a second detection current based on a first and a second temperature detection code fed thereto to generate a first and a second detection voltage corresponding to the changed first and second detection currents and the second reference current; a temperature detection signal generator for comparing the first and second detection voltages with the reference voltage to generate a first and a second temperature detection signal; and a temperature detection controller connected to the temperature detection signal generator for detecting an operation temperature of a semiconductor device and generating the first and second temperature detection codes in response to the first and second temperature detection signals, wherein the first and second temperature detection codes are output and fed back to the reference and detection voltage generator. - View Dependent Claims (17, 18, 19, 20)
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Specification