TLE4946H

High Precision Hall-Effect Switch Data Sheet Version 1.0 2003-11-20 TLE4946H Features 2.7V to 24V supply voltage operation Operation from unregulated power supply High sensitivity and high stability of the magnetic switching points High resistance to mechanical stress by Active Error Compensation Reverse battery protection (-18V) Superior temperature stability Peak temperatures up to 195°C without damage Low jitter (typ. 1µs) High ESD performance (±6kV HBM) Digital output signal Bipolar version SMD package P-SC59-3-2 (SOT-23 compatible) Ordering Code Q62705K-697 P-SC59-3-2 Type TLE4946H Package P-SC59-3-2 Functional Description The TLE4906H is an integrated circuit Hall-effect sensor designed specifically for highly accurate applications. Precise magnetic switching points and high temperature stability are achieved by active compensation circuits and chopper techniques on chip. TLE4946H Circuit Description The chopped Hall IC Switch comprises a Hall probe, bias generator, compensation circuits, oscillator, and output transistor. The bias generator provides currents for the Hall probe and the active circuits. Compensation circuits stabilize the temperature behavior and reduce technology variations. The Active Error Compensation rejects offsets in signal stages and the influence of mechanical stress to the Hall probe caused by molding and soldering processes and other thermal stresses in the package. This chopper technique together with the thresh...