電流制御発振器 - 富士通株式会社

Title:

電流制御発振器

Document Type and Number:

Japanese Patent JP4610608

Kind Code:

B2

Abstract:

Widening the frequency range without increasing the power consumption. Current circuits (1a) and (1b) output charge current based on control current. Capacitors (C1) and (C2) are provided in association with the current circuits (1a) and (1b) and store the charge current. Discharge transistors (M1) and (M3) are provided in association with the capacitors (C1) and (C2) and cause the capacitors (C1) and (C2) to discharge electric charge. On-off transistors are connected between the current circuits (1a) and (1b and the capacitors (C1) and (C2) and open or close the paths between the current circuits (1a) and (1b) and the capacitors (C1) and (C2) in accordance with the voltages across the capacitors (C1) and (C2). Signal output transistors (M5) and (M6) have their gates connected between the current circuits (1a) and (1b) and the on-off transistors (M2) and (M4) and output signals to a flip-flop (2) in accordance with the charge current. The flip-flop (2) drives the discharge transistors (M1) and (M3) alternately in accordance with the signals.

Inventors:

Daisuke Yamazaki
Radecki Anjay

Application Number:

JP2007505762A

Publication Date:

January 12, 2011

Filing Date:

February 28, 2005

Export Citation:

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