TLE4976L datasheet(10/18 Pages) INFINEON

10 / 18 page

Data Sheet

Rev. 2.0, 2009-02-12

TLE4976-1K

TLE4976L

Specification

3.1

Application Circuit

Input

µC GND

VSupply

µC

TLE

4976x

GND

4.7 nF

VSIG

The advantage of the current interface is, that only two wires are necessary to connect the sensor.

At least one series resistor is required to convert the two output states of the Hall sensor from current consumption

to a voltage information.

A typical value for RL is 100Ω. This gives a typical signal voltage level VSIG = 0.8V in the Off state and 1.4V in the

On state.

If the sensor is operated in an application environment with disturbances on the supply line, an additional series

resistor RS is recommended. The maximum value for the series resistor RS can be calculated using the following

formula:

VS_min is the minimal supply voltage which might occur due to disturbances on the supply line VS.

Example: VSupplymin = 6V; VSmin = 3V; RL = 100Ω; IShighmax = 17mA : RSmax = 76.5Ω

Figure 7

Application Circuit

RSmax

VSupplymin VSmin

–

IShighmax

--------------------------------------------- RL

–

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