Integrated mosfet resistance and oscillator frequency control an

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

3072968, 323315, 323317, 341144, H03M 166, G05F 316

Patent

active

053529340

ABSTRACT:
For use in integrated circuit systems wherein both filter time constants and oscillator frequency each need a suitable reference, both the filter and the oscillator are referenced to common reference circuitry through a suitable control loop. Because the fundamental control parameters of the oscillator and the filter are time-period and time-constant respectively, the oscillator and the filter are implemented in a manner where the monolithic passive elements setting the fundamental control parameters (time-period and time-constant) are of the same type. This has the advantage of close tracking through process and ambient variations. Monolithic capacitors on the same chip are used as one of the common passive elements between the oscillator and the filter to set the time-period and time-constants, respectively, adjustable through adjustment of control currents. The monolithic implementation of the Control Block is such that by tuning the oscillator frequency to the appropriate value through setting of the respective control current, the filter time-constants also are appropriately set to satisfy the Nyquist criteria for a sampling rate referenced to the oscillator frequency. Trimming and tuning are accomplished by digital control to control the summing of appropriate current components after manufacture, such as by the programming of on-chip storage cells provided for this purpose.

REFERENCES:
patent: 4608530 (1986-08-01), Bacrania
patent: 4701694 (1987-10-01), Penney et al.
patent: 4712091 (1987-12-01), Schoofs et al.
patent: 4827260 (1989-05-01), Sugawa et al.
patent: 4874964 (1989-10-01), Kondo
patent: 4914317 (1990-04-01), Agiman

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Integrated mosfet resistance and oscillator frequency control an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated mosfet resistance and oscillator frequency control an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated mosfet resistance and oscillator frequency control an will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-583579

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.