TLE4942 Datasheet, PDF (10/18 Pages) Infineon Technologies AG – Differential Two-Wire Hall Effect Sensor IC

TLE4942, TLE4942C
Initial calibration delay
time
Magnetic edges
required for initial
calibration¹⁾
Number of emitted
pulses with invalid
supplementary
information ²⁾
Frequency
Frequency changes
Duty cycle
t _d,input
n_start
n_DR-Start
f
df/dt
duty
Jitter, T_j < 150°C
T_j < 170°C
Jitter, T_j < 150°C
T_j < 170°C
Jitter at board net
ripple
S_Jit-close
S_Jit-far
S_Jit-AC
300 µs Additional to
n_start
6 * magn.
edges
3 * magn.
edges
1
2500 Hz
±100 Hz/ms
40 50 60
% ³⁾ Measured
@∆B = 2mT
sine wave
Def. Figure 7
±2
% 1 s value
±3
%
V_CC = 12 V
?B ≥ 2mT
±4
% 1 s value
±6
%
V_CC = 12 V
(2mT ≥) ∆B >
∆B_Limit
±2
% V_CC=13V±6V_pp
0 < f < 50kHz
∆B = 15 mT
* See Appendix B
1) _{The sensor requires up to nstart 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 < t_Stop. At ∆BLimit
output pulses might have any length < t_Stop).
3) _{During fast offset alterations, due to the calibration algorithm, exceeding the specified duty}
cycle is permitted for short time periods.
TLE4942 - TLE4942C Data Sheet
10
February 2002