AH920

Data Sheet HIGH SENSITIVITY CMOS HALL-EFFECT LATCH AH920 General Description The AH920 is a Hall-effect latch designed in mixed signal CMOS technology. It is quite suitable for use in automotive, industrial and consumer applications. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device over-molding, temperature dependencies, and thermal stress. The device integrates a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, schmitt trigger, and open-drain output. An on-board regulator permits operation with supply voltage from 3.5V to 20V. The AH920 is available in TO-92S-3 and SOT-23-3 packages, which are optimized for most applications. Features Wide Operating Voltage Range from 3.5 to 20V Symmetrical Switch Points Chopper-stabilized Amplifier Stage Superior Temperature Stability Open-drain Output Compact Size ESD Rating: 6000V (Human Body Model) Applications Brushless DC Motor Commutation Brushless DC Fan Solid-state Switch Revolution Counting Speed Detection High Sensitivity and Unconnected Switch TO-92S-3 SOT-23-3 Figure 1. Package Types of AH920 Nov. 2010 Rev. 1.3 BCD Semiconductor Manufacturing Limited 1 HIGH SENSITIVITY CMOS HALL-EFFECT LATCH Pin Configuration Data Sheet AH920 Z3 Package (TO-92S-3) N Package (SOT-23-3) 3 3 2 12 1 (Front View) (Top View) Figure 2. Pin Configuration of AH92...