Title:
SEMICONDUCTOR TYPE SENSOR CIRCUIT DEVICE
Document Type and Number:
Japanese Patent JP3182908
Kind Code:
B2
Abstract:
PURPOSE: To provide the semiconductor type sensor circuit device which is sufficiently miniaturized, enables integration and stablizes the output of a comparator.
CONSTITUTION: Outputs V- and V+ from a sensor mechanism 11 composed of the bridge circuit of magneto resistance elements R11-R14 are inputted to a comparator 12 and with the output of this comparator 12, transistors Q11 and Q12 are oppositely controlled. An output from a constant current circuit composed of a resistor R10 and a transistor Q10 is selected by the transistors Q11 and Q12 and respectively fed back through forward diodes D1 and D2 to inputs V-and V+ of the comparator. In an area where hysteresis is most effectively operated by the P/n joining capacity of this diode, a spike waveform is generated for further improving the hysteresis effect.
Inventors:
Hirofumi Uenoyama
Toshikazu Arasuna
Toshikazu Arasuna
Application Number:
JP24080492A
Publication Date:
July 03, 2001
Filing Date:
September 09, 1992
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01D5/245; G01P3/481; H01L21/822; H01L27/04; H03K3/023; H03K3/0233; H03K5/08; (IPC1-7): H03K3/0233; G01D5/245; G01P3/481; H01L21/822; H01L27/04; H03K5/08
Domestic Patent References:
| JP59147528A |
Attorney, Agent or Firm:
Takehiko Suzue