tle4941-2 Infineon Technologies Corporation, tle4941-2 Datasheet - Page 8

• Manufacturer Part Number: tle4941-2
• Description: Differential Two-wire Hall Effect Sensor Ic
• Manufacturer: Infineon Technologies Corporation

TLE4941-2, TLE4941-2C Supplement
Appendix B Release 1.0
1. Occurrence of initial calibration delay time t
d,input
Identical to TLE4941, TLE4941C appendix B.
2. Magnetic input signal extremely close to a PGA switching threshold during signal
start-up:
After signal start-up normally all PGA switching into the appropriate gain state happens
within less than one signal period. This is included in the calculation for n
. For the very
DZ-Startup
rare case that the signal amplitude is extremely close to a switching threshold of the PGA
and the full range of the following speed ADC respectively, a slight change of the signal
amplitude can cause one further PGA switching. It can be caused by non-perfect magnetic
signal (amplitude modulation due to tolerances of polewheel, tooth wheel or air gap
variation). This additional PGA switching can result in a further delay of the output signal (n
DZ-
) up to three magnetic edges leading to a worst case of n
=9 and
=11.
n
Startup
DZ-Start
DR-Startup
t
However, the speed signal start-up, comprised of n
and
is not affected by this
d,input
DR-Startup
behaviour for TLE4941-2.
TLE4941-2 - TLE4941-2C
8
February 2002
Datasheet supplement