Slew rate enhancement circuit via dynamic output stage

Details Slew rate enhancement circuit via dynamic output stage Slew rate enhancement circuit via dynamic output stage

2007-01-16

2007-01-16

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C326S087000

Reexamination Certificate

active

10707354

ABSTRACT:
A slew rate enhancement circuit of an operational amplifier including a main output stage, a monitoring stage and an assistant output stage is provided. An input voltage of the operational amplifier is detected by the main output stage to decide whether to output a main current to the load or not. The main output stage also generators a first push signal and a first pull signal according to the input voltage, and thereafter the second push signal and second pull signal are level shifted by the monitoring stage. A second push signal and second pull signal will turn on or turn off the assistant output stage to decided whether to output an assistant current to the load or not. Specially, the improved compact circuit does not increase state operating current for the original operational amplifier and occupy a small chip area.

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