Dram temperature measurement system
First Claim
1. A method for producing a signal representative of temperature, comprising:
- producing a first current proportional to temperature;
producing a second current inversely proportional to said temperature;
selectively using said first and second currents to control the charge on a capacitor; and
comparing the charge on said capacitor to a reference voltage to produce a bitstream representative of said temperature.
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Accused Products
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.
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Citations
19 Claims
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1. A method for producing a signal representative of temperature, comprising:
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producing a first current proportional to temperature; producing a second current inversely proportional to said temperature; selectively using said first and second currents to control the charge on a capacitor; and comparing the charge on said capacitor to a reference voltage to produce a bitstream representative of said temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for producing a signal representative of temperature, comprising:
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producing a first current proportional to a temperature; producing a second current inversely proportional to said temperature; selectively using said first and second currents to control the charge on a capacitor; and comparing the charge on said capacitor to a reference voltage inversely proportional to said temperature to produce a bitstream representative of said temperature. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for producing a count representative of temperature, comprising:
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producing a first current proportional to temperature; producing a second current inversely proportional to said temperature; controlling the charge on a capacitor by using said first current to charge said capacitor and selectively using said second current to discharge said capacitor; comparing the charge on said capacitor to a reference voltage inversely proportional to said temperature to produce a bitstream; and counting the number of transitions in said bitstream to produce a count representative of said temperature. - View Dependent Claims (16, 17, 18, 19)
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Specification