Low power RC oscillator using a low voltage bias circuit

Details Low power RC oscillator using a low voltage bias circuit Low power RC oscillator using a low voltage bias circuit

1995-06-07

1996-12-17

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331143, 331186, 327541, 327543, H03K 30231, H03B 520, G05F 324, G05F 326

Patent

active

055857655

ABSTRACT:
A low power RC oscillator includes a low power bias circuit and an RC network. The RC network is used to form a time constant equal to the RC product. However, this RC time constant is not used in the manner of a typical RC network to set the frequency of oscillation. Instead, the RC oscillator disclosed herein includes a separate oscillator, such as a voltage-controlled oscillator (VCO), and uses the RC time constant to compare with the oscillator-generated period and to adjust the frequency of the overall RC oscillator circuit in accordance with the comparison. The RC oscillator is self-calibrating.

REFERENCES:
patent: 3928812 (1975-12-01), Bates
patent: 4520327 (1985-05-01), Myers
patent: 4714901 (1987-12-01), Jain et al.
patent: 4998075 (1991-03-01), Patton, III et al.
patent: 5017919 (1991-05-01), Hull et al.
patent: 5070311 (1991-12-01), Nicolai
S. M. Sze, "Physics of Semiconductor Devices", .COPYRGT.1969, Fig. 20. John Wiley & Sons, New York.

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