Embedded structure circuit for VCO and regulator
First Claim
1. An oscillation circuit formed in a single semiconductor chip, comprising:
- a first power supply terminal supplied with a first source voltage;
a second power supply terminal supplied with a second source voltage different from the first source voltage;
a voltage regulator for receiving a voltage from the first power supply terminal and outputting a source voltage; and
a voltage controlled oscillation circuit supplied with the source voltage from the voltage regulator; and
a current source circuit connected to the second power supply terminal;
wherein the voltage regulator, the voltage controlled oscillation circuit and the current source circuit are connected in series between the first and second power supply terminals, and the current supplied from the voltage regulator to the voltage controlled oscillation circuit flows in the current source circuit.
3 Assignments
0 Petitions
Accused Products
Abstract
An oscillation circuit formed in a single semiconductor chip, wherein a first source voltage is supplied to a first power supply terminal, a second source voltage different from the first source voltage is supplied to a second power supply terminal, a voltage regulator receives the voltage from the first power supply terminal and outputs a source voltage, a voltage controlled oscillation circuit is supplied with a source voltage from the voltage regulator, a current source circuit is connected to the second power supply terminal, the voltage regulator, the voltage controlled oscillation circuit and the current source circuit are inserted in series between the first and second power supply terminals, and the current supplied to the voltage controlled oscillation circuit from the voltage regulator flows in the current source circuit.
8 Citations
10 Claims
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1. An oscillation circuit formed in a single semiconductor chip, comprising:
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a first power supply terminal supplied with a first source voltage;
a second power supply terminal supplied with a second source voltage different from the first source voltage;
a voltage regulator for receiving a voltage from the first power supply terminal and outputting a source voltage; and
a voltage controlled oscillation circuit supplied with the source voltage from the voltage regulator; and
a current source circuit connected to the second power supply terminal;
wherein the voltage regulator, the voltage controlled oscillation circuit and the current source circuit are connected in series between the first and second power supply terminals, and the current supplied from the voltage regulator to the voltage controlled oscillation circuit flows in the current source circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification