Circuit for voltage controlled oscillator

Details Circuit for voltage controlled oscillator Circuit for voltage controlled oscillator

2008-10-03

2010-11-16

Pascal, Robert (Department: 2817)

Oscillators

Ring oscillators

C331S185000, C327S287000

Reexamination Certificate

active

07834709

ABSTRACT:
A voltage controlled oscillator and a load cell circuit usable in VCO are provided. The VCO features an internal compensation for process, voltage and temperature using a replica of half of the oscillating stage. The load cell circuit comprises a bias transistor to drain a predetermined current from the oscillating stage, a control transistor to vary resistance offered by it responsive to a control voltage applied and a resistor adapted to provide a clamp resistance.

REFERENCES:
patent: 5793239 (1998-08-01), Kovacs et al.
patent: 6094103 (2000-07-01), Jeong et al.
patent: 6275117 (2001-08-01), Abugharbieh et al.
patent: 7061337 (2006-06-01), Partovi et al.
patent: 2003/0076179 (2003-04-01), Branch et al.

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