CS1124

www.DataSheet4U.com CS1124 Dual Variable-Reluctance Sensor Interface IC The CS1124 is a monolithic integrated circuit designed primarily to condition signals used to monitor rotating parts. The CS1124 is a dual channel device. Each channel interfaces to a Variable Reluctance Sensor, and monitors the signal produced when a metal object is moved past that sensor. An output is generated that is a comparison of the input voltage and the voltage produced at the IN Adj lead. The resulting square–wave is available at the OUT pin. When the DIAG pin is high, the reference voltage at INAdj is increased. This then requires a larger signal at the input to trip the comparator, and provides for a procedure to test for an open sensor. http://onsemi.com 8 1 SO–8 D SUFFIX CASE 751 Features Dual Channel Capability Built–In Test Mode On–Chip Input Voltage Clamping Works from 5.0 V Supply Accurate Built–In Hysteresis VCC PIN CONNECTIONS AND MARKING DIAGRAM INAdj IN1 IN2 GND A WL, L YY, Y WW, W OUT1 To µP + – 1 1124 ALYW 8 VCC OUT1 OUT2 DIAG VCC VCC VCC INP1 DIAG R1 IN1 C1 Active Clamp INAdj VCC = Assembly Location = Wafer Lot = Year = Work Week ORDERING INFORMATION Device CS1124YD8 CS1124YDR8 Package SO–8 SO–8 Shipping 95 Units/Rail 2500 Tape & Reel RRS VRS COMP1 Variable Reluctance Sensor VCC INP2 VCC OUT2 To µP + – R2 IN2 C2 Active Clamp RRS VRS COMP2 Variable Reluctance Sensor GND RAdj Figure 1. Block Diagram © Semiconductor Components Industries, LLC, 2001 ...