Title:
電流検出回路
Document Type and Number:
Japanese Patent JP4289361
Kind Code:
B2
Abstract:
A current sensing circuit comprising a current amplification stage for amplifying a sensed current input, and a comparator having as a first input the amplified sensed current input. The amplification stage comprises a first transistor connected between a first rail and a second rail, the sensed current being input to a source of the first transistor, the amplified sensed current being output from the drain of the first transistor, and a gate of the first transistor being biased. The circuit is capable of sensing an analogue signal of 100 muA or less and outputting a rail-to-rail digital signal.
Inventors:
Niches Classe Ceram
Application Number:
JP2006093339A
Publication Date:
July 01, 2009
Filing Date:
March 30, 2006
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G01R19/00; G01R19/165; G11C7/02; G11C7/06
Domestic Patent References:
| JP11007778A | ||||
| JP62197996A | ||||
| JP10074391A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Fujitsuna Hideyoshi
Osamu Suzawa
Fujitsuna Hideyoshi
Osamu Suzawa