Interface circuit having differential signal common mode shiftin

Details Interface circuit having differential signal common mode shiftin Interface circuit having differential signal common mode shiftin

1993-03-09

1994-05-31

Hudspeth, David R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307494, H03K 19003

Patent

active

053172140

ABSTRACT:
An interface circuit for converting a differential input voltage, having a common-mode level within a first range, into a differential output voltage having a different, common-mode level. The circuit feeds current between a pair of variable current sources and a pair of input terminals adapted to receive the differential input voltage through a pair of resistors. The amount of current passing through the pair of resistors is related to the common-mode level of the input signal. The resistors produce the differential output voltage at the pair of output terminals with a common-mode level related to the common-mode level of the input voltage translated an amount related to the amount of current passing through them.

REFERENCES:
patent: 4684831 (1987-08-01), Kruest
patent: 4994691 (1991-02-01), Naghshineh
patent: 5077496 (1991-12-01), Wolczanski

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