Amplifiers – With semiconductor amplifying device – Including signal feedback means
Reexamination Certificate
2007-01-18
2009-06-16
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including signal feedback means
C330S255000
Reexamination Certificate
active
07548117
ABSTRACT:
A differential amplifier receives a differential input signal and generates an output signal at an output node. An auxiliary circuit coupled to the differential amplifier operates to improve slew rate response. In quiescent and small signal situations with respect to the differential input signal, the auxiliary circuit does not alter or change operation of the differential amplifier. However, in situations where a large signal change is experienced with respect to the differential input signal, the auxiliary circuit functions to speed up the sourcing and sinking current to/from the output node. A stability compensation capacitor coupled to the output node is accordingly more quickly charged or discharged and an improvement in slew rate performance of the differential amplifier is experienced.
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Meng Fansheng
Zhang Gangqiang
Jorgenson Lisa K.
Nguyen Khiem D
Pascal Robert
Shenzhen STS Microelectronics Co. Ltd.
Szuwalski Andre M.
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