Voltage controlled oscillator delay cell and method
AssigneeCypress Semiconductor Corporation
InventorsMohandas Palatholmana Sivadasan, Gajendar Rohilla
Life of this patent
Estimating the term…
Loading patent…
AssigneeCypress Semiconductor Corporation
InventorsMohandas Palatholmana Sivadasan, Gajendar Rohilla
Estimating the term…
A delay cell circuit (200) is disclosed. The delay cell circuit may include a differential stage (202) and a cross-coupled stage (204). The cross-coupled stage can include resistors (210-0 and 210-1) the function to reduce a gain. The differential stage (202) and cross-coupled stage (204) can include variable currents sources (208 and 212), respectively. As frequency of operation increases, variable current source (208) provides a larger current to the differential stage (202) and variable current source (212) provides a smaller current to cross-coupled stage (204). Delay cell circuit (200) may be used in a voltage controlled oscillator (VCO). By including gain attenuating devices such as resistors (210-0 and 210-1), a frequency tuning range of the VCO may be increased.
A delay cell circuit, comprising:
Dependencies are inferred from the claim text.