FS72X

FEELING TECHNOLOGY Single Digital Output Hall Effect Latch Features Maximum output sink current 50mA Open-drain pre-driver Power reverse polarity protection Available in SIP-3L, SOT23(FS72XY) package FS72X FS72XY Pb Free General Description FS72X/FS72XY is a Hall sensor with latched digital output. It’s suitable for electronic commutation of brushless DC motor applications. The FS72X/FS72XY uses a chopper amplifier for magnetic signal amplification, which can achieve a low offset and thus precise magnetic switching thresholds. If a magnetic flux density larger than threshold Bop,NO is turned on(low). The output state is held until a magnetic flux density reversal falls below Brp causing NO to be turned off (high) Block Diagram Bias Generator Hall Plate Chopper Amplifier Oscillator Sequencer Power On Reset Digital control logics Figure.1 This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product. Rev1.2 June. 29, 2009 P.1 FEELING TECHNOLOGY Pin Connection. VSS FS72X FS72XY 3 Top View 1 VDD Mark Side 2 NO 1 VDD 2 VSS 3 NO FS72XY FS72X Figure 2 Pin Descriptions Name VDD VSS NO I/O P G O FS72X FS72XY Description Positive power supply Ground Driver output 1 2 3 1 3 2 Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground Functional Descrip...