Applications

• Brushless DC (BLDC) motor commutation: The ATS137 can be used to detect the rotor position in BLDC motors, enabling efficient and precise motor control.
• Position and speed sensing: It can detect the presence or absence of a magnetic field, enabling position and speed sensing in various applications.
• Revolution counting: The sensor can count revolutions of a rotating object by detecting the passing of a magnet attached to the object.
• Contactless switch: The ATS137 can be used as a contactless switch in applications where physical contact is undesirable or impractical.
• Flow rate sensing: By using a magnet attached to a rotating impeller, the sensor can be used to measure flow rate.

Features

• Latch Operation: Output latches and remains in the detected state until a magnetic field of opposite polarity is applied.
• Wide Operating Voltage Range: Operates over a wide voltage range, making it suitable for various power supply conditions.
• High Sensitivity: Detects magnetic fields with high sensitivity.
• Digital Output: Provides a digital output signal that is easy to interface with microcontrollers and other digital circuits.
• Small Package Size: Available in small package sizes for space-constrained applications.
• Reverse Polarity Protection: Includes reverse polarity protection to prevent damage from incorrect power supply connection.

Benefits

• Reliable Position Detection: Provides reliable and accurate position detection in various applications.
• Contactless Operation: Eliminates the need for physical contact, reducing wear and tear and improving reliability.
• Long Lifespan: Offers a long lifespan due to the absence of mechanical parts.
• Easy Integration: Simple to integrate into existing systems due to its digital output and small package size.
• Improved Motor Control: Enables efficient and precise motor control in BLDC motor applications.
• Cost-Effective: Provides a cost-effective solution for position and speed sensing applications.

Additional Details

The ATS137 is typically available in a small SOT-23 or similar surface-mount package. It requires an external pull-up resistor on the output. Detailed specifications, including operating voltage range, magnetic field threshold values (BOP and BRP), and operating temperature range, can be found in the Anachip Corp. datasheet.