Title:
【発明の名称】磁気抵抗回転速度センサーの処理回路
Document Type and Number:
Japanese Patent JP3442086
Kind Code:
B2
Abstract:
The invention relates to an evaluation circuit (10) for a magnetoresistive rotation sensor (13) or the like, having a comparator (11) and switching hysteresis for converting an analog sensor signal into a digital switching signal (12) using means (16, 19, 22, 23, 33), which are connected upstream of the comparator (11), in order to apply a specific hysteresis signal (24) as operating point to one of the comparator inputs (17, 20) in a symmetrical fashion in each case as a function of the switching signal of the output side, and having, furthermore, a pre-amplifier (15), which is connected upstream of the comparator input (17) and amplifies the sensor signal, and an offset amplifier (18), which is constructed in the same way, is connected upstream of the comparator input (20), and amplifies an offset signal of an upstream offset network (21) in order to specify an integrable circuit which suppresses simple offsets and fluctuations in temperature and supply voltage as well as component tolerances.
Inventors:
Jurgen Coats
Georg Kisters
Michael rum
Georg Kisters
Michael rum
Application Number:
JP24141491A
Publication Date:
September 02, 2003
Filing Date:
September 20, 1991
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
G01D5/245; G01D5/244; G01P1/00; G01P3/48; G01P3/481; G01P3/487; G01P3/488; H03K5/08; H03K17/30; H03M1/00; (IPC1-7): H03K5/08; G01D5/245; G01P3/481
Attorney, Agent or Firm:
Kosaku Sugimura