Multiple channel sampling circuit having minimized crosstalk int

Details Multiple channel sampling circuit having minimized crosstalk int Multiple channel sampling circuit having minimized crosstalk int

1993-02-23

1994-01-25

Wambach, Margaret R.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307246, 328151, H03K 5159, H03K 1756

Patent

active

052818675

ABSTRACT:
A sampling circuit (10, 10') selectively samples, stores and provides multiple output signals with a single amplifier (30). A sampling capacitor (20, 28) is used for each input channel. In order to minimize crosstalk between the multiple channels, each sampling capacitor is selectively electrically isolated from an input of the single amplifier by a switch (18, 25). Each sampling capacitor is further selectively electrically isolated from an output of the single amplifier by another switch (19, 26). A switch structure (50, 52, 54) which is guard ring protected may be used at the input of each channel to further minimize crosstalk errors.

REFERENCES:
patent: 3135874 (1964-06-01), Lucas et al.
patent: 4223235 (1980-09-01), Rufray
patent: 4823027 (1989-04-01), Takahashi
patent: 5081454 (1992-01-01), Campbell, Jr. et al.
patent: 5099239 (1992-03-01), Bruce et al.
patent: 5196733 (1993-03-01), Shin

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