TLE4942-2 Datasheet, PDF (8/9 Pages) Infineon Technologies AG – Differential Two-Wire Hall Effect Sensor IC

TLE4942-2, TLE4942-2C Supplement
Parameter
Jitter during startup
and uncalibrated
mode
Magnetic field
amplitude change
necessary for early
startup of the –2
Versions
∆Bˆ _{Limit, early startup}
> 2 * ? Bˆ _Limit + X% (X
= 10)
Symbol
S_JitClose
(1σ-value)
S_JitFar
(1σ-value)
S_JitAC
(1σ-value)
∆Bˆ _{Limit, early}
startup
min. typ. max.
±3
±4
±5
±7
±3
0.7 1.6 3.0
+10% +10%
0.7 1.76 3.3
Unit
%
%
%
%
%
Conditions
-40°C ≤T_amb ≤ 150°C:
150°C ≤T_amb ≤ 170°C:
-40°C ≤T_amb ≤ 150°C
150°C≤T_amb ≤170°C
see TLE 4942 spec
These magnetic field
changes are necessary
for startup with the
second magnetic edge
mT
mT
Permitted time for
edges to exceed
∆Bˆ _Limit,
early startup
∆t_{Limit, slow}
early startup
necessary for startup
with the second edge
590
ms f < 1s
Behaviour at magnetic input signals slower than T_stop (self-calibration time period):
Unlike the TLE4941 magnetic changes exceeding ∆Bˆ _{Limit,early startup} can cause output switching
of the TLE4941-2, even at f significantly lower than 1Hz. Depending on their amplitude edges
slower than ∆t_{Limit, slow early startup} might be detected. If the digital noise constant ( ∆Bˆ _{Limit,early startup} )
is not exceeded before a new initial self-calibration is started, the output of the corresponding
edge will be inhibited. This depends on signal amplitude and initial phase.
3 Additional remarks
All additional parameters for TLE4942-2 are guaranteed by design, based on lab
characterisations. For series production additional to the parameters of TLE4942
(standard type) only n_DZ-start is tested.
TLE4942-2 - TLE4942-2C Data sheet supplement 8
February 2002