Driver amplifier circuit having reduced DC bias

Details Driver amplifier circuit having reduced DC bias Driver amplifier circuit having reduced DC bias

2008-02-14

2010-02-16

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S540000, C330S296000, C330S297000

Reexamination Certificate

active

07663429

ABSTRACT:
A driver amplifier circuit is provided which includes a voltage level shifting circuit and an Op-Amp. A positive power supply terminal and a negative power supply terminal of the Op-Amp receive a first reference voltage and a second reference voltage outputted from the voltage level shifting circuit, causing a DC voltage level of an output signal to be equal to 0V. Meanwhile, the absolute value of a voltage difference between the first reference voltage and the second reference voltage is equal to VDD, meaning that elements in the circuit operate without risking a high-voltage damage.

REFERENCES:
patent: 5289137 (1994-02-01), Nodar et al.
patent: 5834977 (1998-11-01), Maehara et al.
patent: 6326844 (2001-12-01), Morris et al.
patent: 7061327 (2006-06-01), Doy
patent: 7061328 (2006-06-01), Doy
patent: 7382195 (2008-06-01), Chen et al.
patent: 2005-86611 (2005-03-01), None

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