Invention Grant
US07675338B2 Duty cycle correction circuit whose operation is largely independent of operating voltage and process 失效
工作循环校正电路的工作原理很大程度上与工作电压和工艺无关

Duty cycle correction circuit whose operation is largely independent of operating voltage and process
Abstract:
A Duty Cycle Correction (DCC) circuit is provide in which pairs of field effect transistors (FETs) in known DCC circuit topologies are replaced with linear resistors coupled to switches of the DCC circuit such that when the switch is open, the input signal is routed through the linear resistors. The linear resistors are more tolerant of process, voltage and temperature (PVT) fluctuations than FETs and thus, the resulting DCC circuit provides a relatively smaller change in DCC correction range with PVT fluctuations than the known DCC circuit topology that employs FETs. The linear resistors may be provided in parallel with the switches and in series with a pair of FETs having relatively large resistance values. The linear resistors provide resistance that pulls-up or pulls-down the pulse width of the input signal so as to provide correction to the duty cycle of the input signal.
Information query
Patent Agency Ranking
0/0