AH174

AH174 Inverted Output Hall Effect Latch For High Temperature „ Features - Bipolar Hall effect latch sensor - 3.5V to 20V DC operation voltage - Open collector pre-driver - 25mA output sink current - Chip power reverse-connection protection - Operating temperature: −40°C ~ +125°C - Package: SIP3, SOT23 „ General Description AH174 is a single-digital-output Hall-effect sensor for high temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, and a comparator to provide switching hysteresis for noise rejection, and an open-collector output pre-driver. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. While the magnetic flux density (B) is larger than threshold Bop, the OUT pin turns off (High). If B removed toward Brp, the OUT pin is latched “off” state prior to B < Brp. When B < Brp, the OUT pin go into “ on ” state. „ Applications - Rotor position sensing - Current switch - Encoder - RPM detection „ Pin Assignment (Top view) 3. OUT 2. GND 1. VCC (SIP3 package) „ Pin Descriptions Name Description VCC GND OUT Input power Ground Inverted output stage www.DataSheet4U.com 3. OUT GND 2. 1. VCC ( SOT23 package) „ Ordering Information AH174 X - X X X - X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP3 W: SOT23 Lead L : Lead Free Blank: Normal Packing Blank : Tube A : Taping M...