Title:
電圧レベル変換回路
Document Type and Number:
Japanese Patent JP2004533128
Kind Code:
A
Abstract:
Voltage level translators are presented, inter alia, for operating an operational amplifier integrated circuit designed for operation with a single ended power supply, to operate with a split level power supply having a center tapped ground. A first polarity power supply terminal of a operational amplifier integrated circuit is coupled to a first polarity of the of the split level power supply, and a second polarity power supply terminal of the operational amplifier integrated circuit is coupled to a second polarity of the power supply, with a positive signal input terminal of the operational amplifier being coupled to a center tapped ground of the split level power supply. A second voltage level translator is presented to operate an integrated circuit having a maximum voltage rating with a power supply having a power supply voltage greater than the maximum voltage rating, wherein a first zener diode is coupled in series between a first polarity of the power supply and a first polarity terminal of the integrated circuit, and a second zener diode is coupled in series between a second polarity of the power supply and a second polarity terminal of the integrated circuit.
Inventors:
Schmidt, Robert Warren
Application Number:
JP2001550864A
Publication Date:
October 28, 2004
Filing Date:
January 04, 2001
Export Citation:
Assignee:
Thomson Licensing S.A.
International Classes:
H03F1/30; H03F3/45; H03F3/68; (IPC1-7): H03F3/68
Domestic Patent References:
| JPS61112409A | 1986-05-30 | |||
| JPH11112256A | 1999-04-23 | |||
| JPS62230206A | 1987-10-08 | |||
| JPH08316739A | 1996-11-29 | |||
| JPH0653751A | 1994-02-25 |
Foreign References:
| WO1995030273A1 | 1995-11-09 |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito