Current control method and application thereof

Details Current control method and application thereof Current control method and application thereof

2005-09-13

2005-09-13

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

Reexamination Certificate

active

06943720

ABSTRACT:
A current supply circuit supplies a bias current to operational amplifiers which constitute a pipelined AD converter. A current switching circuit switches between output currents in response to a current control signal from current control means, thereby switching between currents to be supplied from a bias circuit to the operational amplifiers via transistors. A sufficiently large current enough for the amplifiers to operate at a high frequency is supplied, while the current is switched to a lower supply current for the amplifier to operate at lower frequencies.

REFERENCES:
patent: 6259901 (2001-07-01), Shinomiya et al.
patent: 6753734 (2004-06-01), Arell et al.
patent: 6765443 (2004-07-01), Pehike
patent: 6870425 (2005-03-01), Leifso et al.
patent: 2001-028519 (2001-01-01), None

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