Oscillators – Solid state active element oscillator – Transistors
Patent
1997-08-26
1999-05-04
Mis, David
Oscillators
Solid state active element oscillator
Transistors
331 59, 331 74, 331108C, 331108A, 331158, 331185, 331173, H03B 506, H03B 536
Patent
active
059007877
ABSTRACT:
An oscillator circuit, having an inverter with input and output terminals interconnected through a feedback resistance, operates in two modes. In a first mode, the input and output terminals are coupled to an external crystal resonator. In a second mode, an external clock signal is supplied to the input terminal. In the second mode, the input terminal is disconnected from the output terminal, and in addition, the output-drive capacity of the inverter is reduced, or the output terminal of the inverter is held at a fixed potential.
REFERENCES:
patent: 5025230 (1991-06-01), Kondo et al.
patent: 5416445 (1995-05-01), Narahara
patent: 5453719 (1995-09-01), Narahara
patent: 5532652 (1996-07-01), Koyama et al.
Mis David
OKI Electric Industry Co., Ltd.
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