Magnetic sensor integrated circuit, motor assembly and application apparatus
AssigneeJohnson Electric S.A.
InventorsGuang Jie CAI, Chun Fai WONG
Life of this patent
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Abstract
A magnetic sensor integrated circuit includes a rectifier circuit, a magnetic field detection circuit, and a timing controller. The rectifier circuit converts an external power into a DC power. The magnetic field detection circuit senses a polarity of an external magnetic field and outputting a magnetic detection signal; and the magnetic field detection circuit includes a first chopping switch, a first amplifier unit and a switched capacitor filter module. The timing controller outputs a first clock signal to the first chopping switch and the first amplifier unit, and a second clock signal delayed for the first clock signal with a first predetermined time to the switched capacitor filter module.
Claims17
A magnetic sensor integrated circuit, comprising:
- a rectifier circuit converting an external power into a DC power;
- a magnetic field detection circuit sensing a polarity of an external magnetic field and outputting a magnetic detection signal;
- wherein the magnetic field detection circuit comprises a magnetic sensor, a first chopping switch, a first amplifier unit and a switched capacitor filter module;
- a timing controller outputting a first clock signal to the first chopping switch and the first amplifier unit, and a second clock signal delayed for the first clock signal with a first predetermined time to the switched capacitor filter module.
Dependencies are inferred from the claim text.