DRAM temperature measurement system
First Claim
Patent Images
1. A converter, comprising:
- a comparator having a first input operable to receive a first signal, a second input operable to receive a second signal, and an output;
a switch for sinking a portion of said first signal, wherein said switch is responsive to said output; and
an integrator including a capacitor connected between said first input and a ground, wherein said first signal is a voltage developed by said integrator when a current proportional to the absolute temperature is applied thereto.
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Abstract
A converter comprising a comparator having a first input operable to receive a first signal, a second input operable to receive a second signal, and an output, a switch for sinking a portion of the first signal, wherein the switch is responsive to the output, and an integrator connected to the first input, wherein the first signal is a voltage developed by the integrator when a current proportional to the absolute temperature is applied thereto. A method for measuring temperature of a device using a comparator and converting the bitstream of the comparator to a digital output is also given. Because of the rules governing abstracts, this abstract should not be used to construe the claims.
52 Citations
24 Claims
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1. A converter, comprising:
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a comparator having a first input operable to receive a first signal, a second input operable to receive a second signal, and an output; a switch for sinking a portion of said first signal, wherein said switch is responsive to said output; and an integrator including a capacitor connected between said first input and a ground, wherein said first signal is a voltage developed by said integrator when a current proportional to the absolute temperature is applied thereto. - View Dependent Claims (2, 3, 4)
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5. A converter, comprising:
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a comparator having a first input operable to receive a first signal a second input operable to receive a second signal, and an output; a switch responsive to said output for sinking a portion of said first signal, and wherein said portion of said first signal that is sunk by said switch is equal to a current that is inversely proportional to the absolute temperature; and an integrator connected to said first input, wherein said first signal is a voltage developed by said integrator when a current proportional to the absolute temperature is applied thereto.
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6. A temperature measurement system, comprising:
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a temperature sensor; a converter responsive to said temperature sensor, said converter comprising; a comparator having a first input operable to receive a first signal from the sensor, a second input operable to receive a second signal from the sensor, and an output; a switch for sinking a portion of said first signal, wherein said switch is responsive to said output; and an integrator including a capacitor connected between said first input and a ground, wherein said first signal is a voltage developed by said integrator when a current proportional to the absolute temperature is applied thereto; and a counter, responsive to said output, for producing an output signal. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A temperature measurement system, comprising:
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a temperature sensor; a converter responsive to said temperature sensor, said converter comprising; a comparator having a first input operable to receive a first signal from the sensor, a second input operable to receive a second signal from the sensor, and an output; a switch responsive to said output for sinking a portion of said first signal, and wherein said portion of said first signal that is sunk by said switch is equal to a current that is inversely proportional to the absolute temperature; and an integrator connected to said first input, wherein said first signal is a voltage developed by said integrator when a current proportional to the absolute temperature is applied thereto; and a counter, responsive to said output, for producing an output signal.
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15. A memory system, comprising:
- a memory module;
a temperature measurement module; and
a memory controller for communicating with said memory module and said temperature module via a system bus, wherein said temperature measurement module comprises;at least one temperature sensor; a converter responsive to said at least one temperature sensor, wherein said converter comprises; a comparator having a first input operable to receive a first signal from the sensor, a second input operable to receive a second signal from the sensor, and an output; a switch for sinking a portion of said first signal, wherein said switch is responsive to said output; and an integrator including a capacitor connected between said first input and a ground, wherein said first signal is a voltage developed by said integrator when a current proportional to the absolute temperature is applied thereto; and a counter, responsive to said output, for producing an output signal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
- a memory module;
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24. A memory system, comprising:
- a memory module;
a temperature measurement module; and
a memory controller for communicating with said memory module and said temperature module via a system bus, wherein said temperature measurement module comprises;at least one temperature sensor; a converter responsive to said at least one temperature sensor, wherein said converter comprises; a comparator having a first input operable to receive a first signal from the sensor, a second input operable to receive a second signal from the sensor, and an output; a switch for responsive to said output for sinking a portion of said first signal, and wherein said portion of said first signal that is sunk by said switch is equal to a current that is inversely proportional to the absolute temperature; and an integrator connected to said first input, wherein said first signal is a voltage developed by said integrator when a current proportional to the absolute temperature is applied thereto; and a counter, responsive to said output, for producing an output signal.
- a memory module;
Specification