Granted Patent B2

US 7,598,819 · App. 11/311,931 · Granted Oct 6, 2009

Abstract

Claims (7)

1. An electronic circuit comprising at least one first and one second differential pair, wherein each of said first and second differential pairs is comprised in a different stage of said electronic circuit, each stage having its own inputs and output, and wherein each of said first and second differential pairs includes a plurality of transistors, wherein all the transistors of said first and second differential pairs are included in a single well.

2. The electronic circuit according to claim 1 , wherein the circuit includes four amplifying stages, each amplifying stage including a differential pair, all the transistors of said differential pairs being included in a single well.

3. The electronic circuit according claim 1 , wherein at least one of said differential pairs includes first and second transistors, which are P-type MOS transistors, and said first and second transistors share one and the same single drain.

4. The electronic circuit according to claim 1 , wherein at least one of said differential pairs includes first and second transistors, which are N-type MOS transistors, and said first and second transistors share one and the same single source.

5. The electronic circuit according to claim 1 , wherein the circuit is manufactured by means of a technology with a pitch below 0.5 μm.

6. The electronic circuit according to claim 1 , wherein the circuit is a voltage-controlled oscillator.

7. The electronic circuit according to claim 6 , wherein the circuit is designed to operate at a frequency above 300 MHz.

Assignments (19)