TLE4942-2 Datasheet, PDF (7/9 Pages) Infineon Technologies AG – Differential Two-Wire Hall Effect Sensor IC

TLE4942-2, TLE4942-2C Supplement
2 Additions/Changes for TLE4942–2 versus TLE4942
(All values are valid for constant amplitude and offset of input signal, f<2500Hz)
Parameter
Signal behaviour after
undervoltage or
standstill>t_Stop
Symbol
n_DZ-Start
min. typ. max. Unit
Conditions
Magnetic edge
amplitude according to
∆Bˆ _{Limit, early startup}
Edges that occur before
n_DZ-Start can be
suppressed
2 pulses ^{1Hz ≤ f ≤ 2000Hz}
Systematic phase error
of output pulses during
startup- and
uncalibrated mode
Phase shift change
during PGA switching
Phase shift change
during transition from
uncalibrated to
calibrated mode
∆Φ_switch
Number of pulses in
uncalibrated mode
in rare cases (see
appendix B)
n_DZ-Startup
n_DZ-Startup
Number of pulses with
invalid supplementary
information
n_DR-Startup
in rare cases (see
application notes)
n_DR-Startup
3 pulses _{f > 2000Hz}
t_d,input has to be taken
into account
Shortest time delay
38 45 52 µs
between pulse 0 (stop
pulse) and pulse 1
t_d,input has to be taken
into account
Shortest time delay
38 45 52 µs
between
wheel speed pulse 1
and 2
Systematical phase
-88
+88 °
error of “uncal” pulse;
nth vs. n+1th pulse
(does not include jitter)
0
80 °
-90
+90 °
6 pulses
8 pulses
9 pulses
11 pulses
After n_DR-Startup pulses
the supplementary
information is correct
(starting with the
n_DR-Startup+1-th pulse the
pulse length is correct)
TLE4942-2 - TLE4942-2C Data sheet supplement 7
February 2002