Title:
CURRENT OUTPUT DRIVE CIRCUIT AND ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2006100318
Kind Code:
A
Abstract:
To provide a current output drive circuit capable of realizing various types of flickering pattern by a relatively small scale program, and to provide an electronic apparatus.
Based on reference current set data stored in a control register 14 and operated logically by a logic circuit 13, a variable reference current IREF is output from the variable current source VIS-i in a reference current generating circuit 12. Based on a reference voltage Vref generated in the reference resistance circuit Rref of a current output DAC2-i, an error amplifier circuit 3-i controls output current from the current output DAC2-i and drives an LED1-i.
Inventors:
TACHIMORI HIROSHI
Application Number:
JP2004281041A
Publication Date:
April 13, 2006
Filing Date:
September 28, 2004
Export Citation:
Assignee:
SONY CORP
International Classes:
H01L33/00; H03K4/02; H03K4/06; H03K17/00; H03K17/687; H03M1/74
Domestic Patent References:
JP2003332624A | 2003-11-21 | |||
JP2001326703A | 2001-11-22 | |||
JP2001325824A | 2001-11-22 | |||
JP2004022646A | 2004-01-22 | |||
JP2004006533A | 2004-01-08 | |||
JPS6356469A | 1988-03-11 |
Attorney, Agent or Firm:
Shigeru Noda