IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0838211
(2010-07-16)
|
등록번호 |
US-8162540
(2012-04-24)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
33 |
초록
▼
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
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.
대표청구항
▼
1. A method for producing a signal representative of temperature, comprising: producing a first current corresponding to temperature;producing a second current based, at least in part, on the temperature, comprising: inputting a signal from an operational amplifier to a control terminal of at least
1. A method for producing a signal representative of temperature, comprising: producing a first current corresponding to temperature;producing a second current based, at least in part, on the temperature, comprising: inputting a signal from an operational amplifier to a control terminal of at least one of a plurality of transistors;inputting a signal developed across a diode to an inverting input terminal of the operational amplifier, the diode being responsive to a first one of the plurality of transistors; andinputting a signal developed across a resistor to a non-inverting input terminal of the operational amplifier, the resistor being responsive to a second one of the plurality of transistors, wherein the second current is available at an output terminal of a third one of the plurality of transistors. 2. The method of claim 1, wherein said producing a first current uses a first circuit and said producing a second current uses a second circuit. 3. The method of claim 1, further comprising: selectively using the first and second currents to control the charge on a capacitor. 4. The method of claim 3, further comprising: comparing the charge on the capacitor to a reference voltage. 5. The method of claim 4, wherein the reference voltage is inversely proportional to the temperature. 6. The method of claim 1, wherein producing a first current comprises: inputting a signal from a second operational amplifier to a second control terminal of at least one of a second plurality of transistors;inputting a signal developed across a second diode to an inverting input terminal of the second operational amplifier, the second diode being responsive to a first one of the second plurality of transistors; andinputting a signal developed across a second resistor and a third diode connected in series to a non-inverting input terminal of the second operational amplifier, at least one of the second resistor and the second diode being responsive to a second one of the second plurality of transistors, wherein the first current is available at an output terminal of a third one of the second plurality of transistors. 7. The method of claim 1, wherein the first current is proportional to the temperature and the second current is inversely proportional to the temperature. 8. A method for producing a signal representative of temperature, comprising: producing a first current corresponding to temperature;producing a second current based, at least in part, on the temperature;using the first current to charge a capacitor;selectively connecting the second current to the capacitor to discharge the capacitor; andcomparing the charge on the capacitor to a reference voltage. 9. The method of claim 8, wherein the first current and second current are inversely proportional. 10. The method of claim 8, wherein said producing a first current uses a first circuit and said producing a second current uses a second circuit. 11. The method of claim 8, wherein said comparing comprises: producing a bitstream corresponding to the temperature. 12. The method of claim 8, wherein the diode is part of a bi-j unction transistor. 13. The method of claim 8, wherein the reference voltage is inversely proportional to the temperature. 14. A method for producing a count representative of temperature, comprising: producing a first current corresponding to temperature;producing a second current corresponding to the temperature, comprising: inputting a signal from an operational amplifier to a control terminal of at least one of a plurality of transistors;inputting a signal developed across a diode to an inverting input terminal of the operational amplifier, the diode being responsive to a first one of the plurality of transistors; andinputting a signal developed across a resistor to a non-inverting input terminal of the operational amplifier, the resistor being responsive to a second one of the plurality of transistors, wherein the second current is available at an output terminal of a third one of the plurality of transistors;controlling the charge on a capacitor using the first current and the second current to discharge the capacitor;comparing the charge on the capacitor to a reference voltage to produce a bitstream; andcounting the number of transitions in the bitstream. 15. The method of claim 14, wherein the first current is proportional to the temperature and the second current is inversely proportional to the temperature. 16. The method of claim 14, wherein said producing the first current comprises: inputting a signal from a second operational amplifier to a second control terminal of at least one of a second plurality of transistors;inputting a signal developed across a second diode to an inverting input terminal of the second operational amplifier, the second diode being responsive to a first one of the second plurality of transistors; andinputting a signal developed across a second resistor and a third diode connected in series to a non-inverting input terminal of the second operational amplifier, at least one of the second resistor and the second diode being responsive to a second one of the second plurality of transistors, wherein the first current is available at an output terminal of a third one of the second plurality of transistors. 17. The method of claim 14, wherein said producing a first current uses a first circuit and said producing a second current uses a second circuit. 18. The method of claim 14, wherein the reference voltage is inversely proportional to temperature. 19. The method of claim 14, wherein said counting the number of transitions comprises: producing a count of transitions corresponding to the temperature. 20. The method of claim 14, further comprising: before counting the number of transitions, producing the bitstream corresponding to the charge on the capacitor.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.