TLE49411CXA Infineon Technologies, TLE49411CXA Datasheet - Page 4

• Manufacturer Part Number: TLE49411CXA
• Manufacturer: Infineon Technologies

Specifications of TLE49411CXA

• Package Type: SSO
• Pin Count: 2
• Mounting: Through Hole
• Lead Free Status / RoHS Status: Compliant

Functional Description
Figure 1
Uncalibrated Mode
Occasionally a short initial offset settling time
signal (the sensor is “blind”).
The magnetic input signal is tracked by the speed ADC and monitored within the digital
circuit. For detection the signal transient needs to exceed a threshold (digital noise
constant d1). When the signal slope is identified as a rising edge (or falling edge), a
trigger pulse is issued to a comparator. A second trigger pulse is issued as soon as a
falling edge (or rising edge respectively) is detected (and vice versa).
Between the start-up of the magnetic input signal and the time when its second extreme
is reached, the PGA (programmable gain amplifier) will switch to its appropriate position.
This value is determined by the signal amplitude and initial offset value. The digital noise
constant value is changing accordingly (d1
states), leading to a change in phase shift between magnetic input signal and output
Data Sheet Supplement
Initial
Setting
Time
d1
Offset = (max + min) / 2
= Peak Detection
1
Example for Start-up Behavior
2
PGA
Switching
d1
Uncalibrated Mode
d2
3
4
d2
4
t
d,input
d2
d2, related to the corresponding PGA
5
might delay the detection of the input
Offset
Corection
Phase Shift
Change
Calibrated Mode
6
TLE4941-1C
7
V2.1, 2005-02
TLE4941-1
AED03204