Current sourcing and sinking circuit for driving a VCO charge pu

Details Current sourcing and sinking circuit for driving a VCO charge pu Current sourcing and sinking circuit for driving a VCO charge pu

1993-01-13

1994-10-18

Mis, David

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

331 1A, 331 8, 331 17, H03L 7089, H03L 7093

Patent

active

053572165

ABSTRACT:
A current sourcing and sinking circuit for driving a charge pump for a voltage-controlled oscillator includes two similar subcircuits, each of which is capable of simultaneously sourcing and sinking output currents. Both subcircuits have identical, corresponding CMOSFET components with two open drain outputs, one of which is a current sourcing output port and the other of which is a current sinking output port. In one subcircuit the current sourcing output port is used while the current sinking output port is terminated drain-to-source with a short circuit. In the other subcircuit the current sinking output port is used while the current sourcing output port is terminated drain-to-source with a short circuit. The similarity of the two subcircuits provides a balanced current sourcing and sinking circuit topology, resulting in substantially equal source and sink current amplitudes and current sourcing and sinking activation timing.

REFERENCES:
patent: 4745372 (1988-05-01), Miwa
patent: 5164889 (1992-11-01), Ruetz
patent: 5220294 (1993-06-01), Ichikawa
patent: 5233314 (1993-08-01), McDermott et al.

Affiliated with

Also associated with

Rating

Current sourcing and sinking circuit for driving a VCO charge pu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Current sourcing and sinking circuit for driving a VCO charge pu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current sourcing and sinking circuit for driving a VCO charge pu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2375325