Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1997-02-04
2000-02-29
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 91, H03K 1700
Patent
active
060313986
ABSTRACT:
The switch circuit has a replica switch connected to a main switch to reduce feedthrough otherwise resulting from parasitic capacitance of the main switch. In operation, the replica switch is always open so as not to interfere with the signals generated by the main switch. A track-and-hold amplifier (TH amp) having both open-loop linearization and feedthrough reduction yet requiring low power supply voltage and low power consumption. In one embodiment of the TH amp, two input buffers each receive a differential input and both generate two output signals, where the output signals from one input buffer are out of phase with the output signals from the other input buffer. Two switch circuits each receive one signal from each input buffer and each switch circuit generates an output signal that is accumulated in one of two hold capacitors, when the switch circuit is closed (i.e., track mode). When the switch circuits are open (i.e., hold mode), two output buffers read out the signals accumulated in the hold capacitors as the differential output of the TH amp.
REFERENCES:
patent: 3643110 (1972-02-01), Thompson
patent: 4146844 (1979-03-01), Quinn
patent: 4823027 (1989-04-01), Takahashi
patent: 4845382 (1989-07-01), Eouzan et al.
patent: 5017924 (1991-05-01), Guiberteau et al.
patent: 5061865 (1991-10-01), Durst
patent: 5111072 (1992-05-01), Seidel
patent: 5440256 (1995-08-01), Erhart et al.
Callahan Timothy P.
Lucent Technologies - Inc.
Luu An T.
LandOfFree
Reduced-feedthrough switch circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reduced-feedthrough switch circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduced-feedthrough switch circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-686455