SS2015

Packages SS2015 CMOS High Sensitivity Micropower Hall Latch 3 pin SIP (suffix UA) Features and Benefits 1. Operation down to 4.5V 2. Wide operating voltage range 3. High sensitivity for direct reed switch re- placement applications 4. Output switches with absolute value of North or South pole from magnet 5. Temperature compensation 6. Open-Collector pre-driver 7. 60V maximum withstand voltage 8. Reverse polarity protection 9. Package: TO-92S(SIP) Functional Block Diagram Application Examples 1. Brush-less DC Motor 2. Brush-less DC Fan 3. Revolution counting 4. Speed measurement General Description: The SS2015 Hall effect latch 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 operati...