Programmable oscillator scheme
AssigneeCypress Semiconductor Corporation
InventorsMonte F. Mar, Warren A. Snyder
Life of this patent
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Abstract
A circuit including an oscillator circuit, a current generator circuit and a voltage generator circuit. The oscillator circuit may be configured to generate an output signal having a frequency in response to (i) a first control signal and (ii) a second control signal. The current generator may be configured to generate said first control signal in response to a first adjustment signal. The voltage generator circuit may be configured to generate the second control signal in response to a second adjustment signal.
Claims18
A circuit comprising:
- an oscillator circuit configured to generate an output signal having a frequency in response to (i) a first control signal and (ii) a second control signal;
- a current generator configured to generate said first control signal in response to a first adjustment signal received from a digital-to-analog converter;
- a trim circuit configured to generate a second adjustment control signal;
- and
- a band gap voltage generator circuit configured to generate said second control signal in response to said second adjustment signal.
A circuit comprising:
- means for generating an output signal having a frequency in response to (i) a first control signal and (ii) a second control signal;
- means for generating said first control signal from a current generator in response to a first adjustment signal received from a digital-to-analog converter;
- means for generating a second adjustment signal;
- and
- means for generating said second control signal from a band gap voltage generator circuit in response to said second adjustment signal.
A method for programming the frequency of an output signal comprising the steps of:
- (a) generating said output signal having said frequency in response to (i) a first control signal and (ii) a second control signal;
- (b) generating said first control signal from a current generator in response to a first adjustment signal received from a digital-to-analog converter;
- (c) generating a second adjustment signal;
- and
- (d) generating said second control signal in response to said second adjustment signal.
Dependencies are inferred from the claim text.