High bandwidth apparatus and method for generating...

Details High bandwidth apparatus and method for generating... High bandwidth apparatus and method for generating...

2007-04-17

2007-04-17

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S260000, C330S253000

Reexamination Certificate

active

11156236

ABSTRACT:
An apparatus and method for generating differential signals. The apparatus includes a first operational amplifier receiving a first signal, a second operational amplifier receiving a second signal, and a first transistor. The first transistor includes a first gate, a first terminal, and a second terminal. Additionally, the apparatus includes a second transistor. The second transistor includes a second gate, a third terminal, and a fourth terminal. Moreover, the apparatus includes a first resistor coupled to the first terminal and the third terminal, and a second resistor coupled to the second terminal and the fourth terminal. Also, the apparatus includes a first current supplier coupled to the first terminal, a second current supplier coupled to the second terminal, a third current supplier coupled to the third terminal, and a fourth current supplier coupled to the fourth terminal.

REFERENCES:
patent: 4659997 (1987-04-01), Ferland et al.
patent: 5404097 (1995-04-01), Barou
patent: 6531920 (2003-03-01), Ishihara
patent: 7049875 (2006-05-01), Tsividis
patent: 7088179 (2006-08-01), Gilbert et al.
patent: 2005/0218981 (2005-10-01), Gatti et al.

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