TLE4942 datasheet(10/18 Pages) INFINEON

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TLE4942, TLE4942C

TLE4942 - TLE4942C Data Sheet

February 2002

Initial calibration delay

time

t d,input

300

µs

Additional to

nstart

Magnetic edges

required for initial

calibration

nstart

6 *

magn.

edges

Number of emitted

pulses with invalid

supplementary

information

nDR-Start

3 *

magn.

edges

Frequency

2500

Frequency changes

df/dt

±100

Hz/ms

Duty cycle

duty

3) Measured

∆B = 2mT

sine wave

Def. Figure 7

Jitter, Tj < 150°C

Tj < 170°C

SJit-close

±2

±3

1 s value

VCC = 12 V

≥ 2mT

Jitter, Tj < 150°C

Tj < 170°C

SJit-far

±4

±6

1 s value

VCC = 12 V

(2mT

≥) ∆B >

∆B

Limit

Jitter at board net

ripple

SJit-AC

±2

VCC=13V±6Vpp

0 < f < 50kHz

∆B = 15 mT

* See Appendix B

1) The sensor requires up to n

start magnetic switching edges for valid speed information after

power-up or after a stand still condition. During that phase the output is disabled.

2) The first 3 pulses containing direction information can have the wrong rotation information.

(The first pulse after starting with the speed signal can have any length < tStop. At

∆BLimit

output pulses might have any length < tStop).

3) During fast offset alterations, due to the calibration algorithm, exceeding the specified duty

cycle is permitted for short time periods.

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