TLE4953 datasheet(15/20 Pages) INFINEON

tên linh kiện	TLE4953

Giải thích chi tiết về linh kiện	Differential Two-Wire Hall Effect Sensor IC

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15 / 20 page

TLE4953

TLE4953C

Data Sheet

V 4.0, 2010-04

If the magnetic direction field exceeds

∆B

Dir, the output pulse lengths are 60 µs or 120 µs

respectively, depending on the direction of rotation.

If the magnitude of the magnetic direction field is below

∆B

dir, the output pulses are

suppressed when the frequency is below fDR,max (see section vibration suppression). For

magnitudes of the magnetic differential field below

∆B

Limit the signal is lost.

Speed pulse occur only at the first pulse after start up or above

DR, max.

If no magnetic differential signal change is detected the IC will remain in calibrated mode.

No internal reset are generated - therefore a zero speed operation is possible.

Figure 6

Definition of PWM Current Interface

AET03196

pre-low

= 30 µs

Xn+1

Xn+2

S = 30 µs

DR-L

= 2 x t

DR-R

= 4 x t

Transferred

Signal:

DR-R

Transferred

Signal:

DR-L

Transferred

Signal:

Internal

Sensor

Speed Signal

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