The OCH145A is a unipolar hall effect switch sensor,which is for contact less switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, and an open-drain output. The bandgap regulator allows a wide operating voltage range.

    OCH145A is rated for operating temperature range from -40°C to 150°C and voltage range from 2.7V to 24V.

    OCH145A是一种单极霍尔效应开关传感器，用于少接触开关应用。该设备包括一个用于磁传感的片上霍尔电压发生器，一个放大霍尔电压的放大器，一个用于为噪声抑制提供开关滞后的施密特触发器，以及一个开漏极输出。带隙调节器允许一个广泛的工作电压范围。

    OCH145A的额定工作温度范围为-40°C到150°C，电压范围为2.7V到24V。

OCH145A FeaturesFeatures/特性:

Wide operating voltage range: 2.7V~24V

Operating Temperature: -40℃~+150℃

Maximum output sink current: 25mA

Reverse polarity protection

Open-Drain pre-driver output

Package: SIP-3L、SOT23-3L

OCH145A Applications/应用：

RPM Detection

Speed measurement

Non-Contact Switch

Position Control

Revolution Detection

Textile Control System

OCH145A Pin Configuration：

OCH145A Application Circuit：

OCH145A Block Diagram：