Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Reexamination Certificate
2005-07-26
2005-07-26
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
C327S112000
Reexamination Certificate
active
06922095
ABSTRACT:
A voltage level shifter includes a front stage circuit periodically generating a first control signal and a second control signal in response to a first input clock signal and a second input clock signal complementary to the first input clock signal; a switch circuit including two PMOS transistors connected between a maximum voltage and a minimum voltage in series, wherein a third control signal is outputted from a conjunction of the two PMOS transistors, and the first and second control signals are coupled to the gate electrodes of the two PMOS transistors, respectively; and a driving circuit receiving the third control signal and outputting an output clock signal having a peak-to-peak value larger than a peak-to-peak value of the input clock signal. The voltage level shifter is implemented by essentially PMOS transistors.
REFERENCES:
patent: 6756835 (2004-06-01), Yu
patent: 2002/0158666 (2002-10-01), Azami et al.
Madson & Metcalf
Toppoly Optoelectronics Corp.
Tra Quan
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