Voltage controlled oscillator and electronic system using the same
View Patent ↗A voltage controlled oscillator comprises two XOR logic units and two inverters. A first inverter inverts a first XOR result into a first output signal; a second inverter inverts a second XOR result into a second output signal; a first XOR logic unit performs an XOR logic operation based on an input signal and the second output signal and thus generating the first XOR result; and a second XOR logic unit performs an XOR logic operation based on the first output signal and a reference voltage and thus generates the second XOR result.
1. A voltage controlled oscillator, comprising:
a first logic unit for performing an XOR logic operation based on an input signal and a second output signal to generate a first XOR result;
a first inverter for inverting the first XOR result into a first output signal;
a second logic unit for performing an XOR logic operation based on the first output signal and a reference voltage to generate a second XOR result; and
a second inverter for inverting the second XOR result into the second output signal.
2. The voltage control oscillator of claim 1 , further comprising:
a third XOR logic unit for performing an XOR logic operation based on the first output signal and the second output signal to generate a third XOR result.
3. An electronic system, comprising:
a power source, providing a reference voltage;
a signal source for providing a signal;
a processor; and
a voltage controlled oscillator as in claim 1 , providing an output which is operationally coupled to the processor.
4. The electronic system of claim 3 , wherein the voltage controlled oscillator further comprising:
a third XOR logic unit for performing an XOR logic operation based on the first output signal and the second output signal to generate and thus generating a third XOR result.
5. A voltage controlled oscillator, comprising:
a first logic unit having a first input signal and a second input signal, said first logic unit performing an XOR logic operation based on the first input signal and the second input signal to generate a first XOR result;
a first inverter having the first XOR result as an input, said first inverter inverting the first XOR result into a first output signal;
a second logic unit having the first output signal and a reference voltage as inputs, said second logic unit performing an XOR logic operation based on the first output signal and the reference voltage to generate a second XOR result; and
a second inverter having the second XOR result as an input, said second inverter inverting the second XOR result into a second output signal, wherein the second input signal to the first logic unit comprises the second output signal.