霍尔效应集成电路、霍尔IC、低工作电压&低功耗、CMOS 工艺、MT1532A、MT1322AT
•Features
Micropower consumption for battery powered applications
Omnipolar, output switches with absolute value o North or South pole from magnet
Operation down to 2.2V
Very High sensitivity for direct reed switch replacement applications Chopper stabilized amplifier stage
•Description
•The MT1322 Omnipolar Hall effect sensor IC is fabricated from mixed signal CMOS technology .It incorporates advanced chopper-stabilization techniques to provide accurate and stable magnetic switch points.
•The circuit design provides an internally controlled clocking mechanism to cycle power to the Hall element and analog signal processing circuits. This serves to place the high current-consuming portions of the circuit into a 'Sleep' mode.
•Periodically the device is 'Awakened' by this internal logic and the magnetic flux from the Hall element is evaluated against the predefined thresholds. If the flux density is above or below the Bop/Brp thresholds then the output transistor is driven to change states accordingly. While in the 'Sleep' cycle the output transistor is latched in its previous state. The design has been optimized for service in applications requiring extended operating lifetime in battery powered systems.
•The output transistor of the MT1321 will be latched on (Bop) in the presence of a sufficiently strong South or North magnetic field facing the marked side of the package. The output will be latched off (Brp) in the absence of a magnetic field.
•低工作电压&低功耗系列：此系列产品工作电压范围为2.2V-5V。利用IC的休眠与唤醒功能，达到降低功耗的目的。客户可根据实际应用的需要，选择不同的采样频率，以满足便携式产品的设计要求。