Title:
受光回路
Document Type and Number:
Japanese Patent JP5255533
Kind Code:
B2
Abstract:
A light-receiving circuit includes a photodiode that converts an input optical signal to a current signal; a current-voltage converting circuit that outputs an output voltage signal obtained by adding a reference voltage to a voltage signal proportional to the current value of the current signal; and an input current limiting unit that supplies the current-voltage converting circuit with the current signal upon limiting the current value of this current signal based upon the reference voltage in such a manner that the output voltage signal will not exceed a constant value irrespective of the value of the reference voltage.
Inventors:
Tsune Imai
Application Number:
JP2009183501A
Publication Date:
August 07, 2013
Filing Date:
August 06, 2009
Export Citation:
Assignee:
Renesas Electronics Corporation
International Classes:
H03F3/08
Domestic Patent References:
| JP2006250884A | ||||
| JP1041508A | ||||
| JP7212147A | ||||
| JP5281269A | ||||
| JP11308056A |
Attorney, Agent or Firm:
Kato Asamichi
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