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US 2003/0155985 A1Published application
Stable oscillator
AssigneeAnalog Devices, Inc.
InventorsChristopher M. Toliver, Stephen T. English, Eric G. Nestler
Life of this patent
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Abstract
An oscillator includes a comparator and a variable voltage element. The comparator has a first input set to a reference voltage, a second input, and an output configured to produce an output voltage as a function of the voltages at the first and second inputs. The variable voltage element delivers to the second input a second voltage that is a function of a switched current. The switched current is a function of the reference voltage.
Claims20
An oscillator comprising:
- a comparator having a first input, a second input, and an output, the output being configured to produce an output voltage that is a function of the voltages at the first and second inputs, the first input being set to a reference voltage;
- a variable voltage element for delivering a second voltage to the second input, the second voltage being a function of a switched current, the switched current being a function of the reference voltage.
An oscillator comprising:
- a variable voltage element for producing a variable voltage;
- a voltage producing device producing an output voltage signal, the voltage producing device receiving a reference voltage and the variable voltage, the output voltage signal being a function of the reference voltage and the variable voltage;
- an output for transmitting the output voltage signal;
- and
- a switching arrangement for selectively delivering a drive signal to the variable voltage element based upon the output voltage signal, the drive signal being a function of the reference voltage.
2 more elements
An oscillator comprising:
- means for producing a variable input voltage;
- means for generating an output voltage signal, the means for generating receiving a reference voltage and the variable input voltage, the output voltage signal being a function of the reference voltage and the variable input voltage;
- and
- means for selectively delivering a drive signal to the producing means based upon the output voltage signal, the drive signal being a function of the reference voltage.
1 more element
Dependencies are inferred from the claim text.