Oscillation circuit operating with stable oscillation frequency

Details Oscillation circuit operating with stable oscillation frequency Oscillation circuit operating with stable oscillation frequency

1992-06-24

1993-10-05

Mis, David

Oscillators

Solid state active element oscillator

Transistors

331144, 331175, H03K 3356

Patent

active

052509141

ABSTRACT:
In an oscillation circuit, the Schmidt circuit generates the control signal of the first level when the charge-discharge voltage inputted from the capacitor shifts to a voltage higher than the first threshold voltage and generates the control signal of the second level when the charge-discharge voltage shifts to a level lower than the second threshold voltage. The switching circuit connects the second current source circuit with the capacitor when the control signal is of the first level and connects the first current source circuit with the capacitor when the control signal is of the second level.

REFERENCES:
patent: 4714901 (1987-12-01), Jain et al.
patent: 4723114 (1988-02-01), D'Arrigo et al.
patent: 4983931 (1991-01-01), Nakano
Sakurai et al., "A 36ns 1 Mbit Pseudo SRAM with VSRAM mode", IEEE Solid-State Circuits Council, Cat. No. 87, May 22-23, 1987, pp. 45-46.

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