Differential preamplifier having balanced resistor network

Details Differential preamplifier having balanced resistor network Differential preamplifier having balanced resistor network

2006-05-16

2006-05-16

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S051000, C327S065000, C360S046000, C360S067000, C360S068000, C330S009000

Reexamination Certificate

active

07046044

ABSTRACT:
The present invention comprises a pair of circuits (171, 172) within the first stage (100) of an AC signal pre-amplifier. The present invention reduces the current mismatch at the base of the first stage transistors (141, 142, 143, 144) resulting in faster switching times by reducing input stage offset and, hence improving input dynamic range.

REFERENCES:
patent: 3651749 (1972-03-01), De Groot
patent: 6552593 (2003-04-01), Blon et al.
patent: 6711396 (2004-03-01), Bergsma et al.
patent: 6762625 (2004-07-01), Devnath
patent: 6847501 (2005-01-01), Cheung et al.

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