Compensated offset voltage, low gain, high bandwidth, full swing

Details Compensated offset voltage, low gain, high bandwidth, full swing Compensated offset voltage, low gain, high bandwidth, full swing

1993-06-18

1994-11-01

Sikes, William L.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330261, 330258, 330 9, 330290, 327307, H03F 126, H03F 345, H03H 1128

Patent

active

053610423

ABSTRACT:
An I/O bus interface cell includes a driver circuit having an input terminal fed by a logic signal and an output terminal to produce in response thereto a drive signal having selectable rise and fall time characteristics in accordance with a reference voltage provided to the driver. The I/O cell also includes a receiver circuit having an input terminal coupled to said output terminal of said driver with the receiver disposed to latch an unresolved, unamplified received signal prior to resolving the state of the signal. The I/O cell further includes a termination circuit having a terminal connected to the output of said driver, and having a selectable impedance characteristic at said terminal, with said selectable impedance being in accordance with a reference voltage provided to an input of said termination circuit. Preferably, the I/O cell the driver, receiver and termination circuits are fabricated on a common semiconductor substrate.

REFERENCES:
patent: 3988689 (1976-10-01), Ochi et al.
patent: 4920339 (1990-04-01), Friend et al.
patent: 5029284 (1991-07-01), Feldbaumer et al.
patent: 5045806 (1991-09-01), Yan

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