CTD501 Crocus

26 mm CTD501 User Manual Digital Switch Demo Board Relevant Products: CT512 Integrated Digital Switch Relevant Documents: CT512 Datasheet AN109: Smart Lock AN112: Reed Switch Replacement 20 mm Introduc on This document provides general informa on about the design and func onality of the Crocus demonstra on board for detec on of a magne c eld. The small arrow illustrated next to the CT512 device denotes the north pole polari- ty conven on. Enclosed with the CTD501 demo board is a magnet for switching the CT512 and status LED. Func onality The CTD501 is ba ery operated and remains con nuously powered. In the presence of a low or no magne c eld or north pole polarity, the CT512 output remains HIGH and the LED remains turned o. When the CT512 detects a south pole magne c eld greater than the opera ng switch point, Bop, the output switches LOW and the LED is turns on. Output Behavior versus Magne c Field: Characteris c Condi ons CT512 Output LED South Pole B > Bop Low ON Null or weak magne c eld B < Brp High OFF North Pole B > Bop High OFF 2016 Crocus Technology Page 1 Doc : CTD501 - User Manual Note Rev 0.1 CTD501 User Manual Digital Switch Demo Board Electrical Schema c: Board Layout Overview: North Pole Polarity UFL Connector 3V Power Supply Arrow (Vout, Ground) CT512 Digital Switch Ground Switch Status LED 2016 Crocus Technology Page 2 Doc : CTD501 - User Manual Note Rev 0.1