Method and circuit for a dual supply amplifier

Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias

Reexamination Certificate

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Details

C330S310000, C330S134000, C330S297000, C330S299000, C341S155000, C327S333000

Reexamination Certificate

active

07012464

ABSTRACT:
A circuit and method for bridging an analog signal between two integrated circuits operating at different supply voltages. The circuit is a two stage fixed gain amplifier. The first stage is a transconductance amplifier and the second stage is an operational amplifier. The first stage converts an input signal from a voltage into a current. The second stage converts the current signal to an output voltage signal.

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Copy of International Search Report Issued Oct. 31, 2002 for Appl. No. PCT/US01/41534, 6 pages.
Ito et al., “A 10 bit 20 MS/S 3V Supply CMOS A/D Converter,” IEEE Journal of Solid-State Circuits, vol. 29, Issue 12, Dec., 1994, pp. 1531-1536.

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