參數(shù)資料
型號(hào)： TLE5012-E0318
廠商： INFINEON TECHNOLOGIES AG
元件分類： 模擬信號(hào)調(diào)理
英文描述： POSITION SENSOR, PDSO8
封裝： GREEN, PLASTIC, DSO-8
文件頁(yè)數(shù)： 14/56頁(yè)
文件大?。?/td> 2614K
代理商： TLE5012-E0318
TLE5012
Specification
Target Data Sheet
21
V 0.41, 2009-02
3.4.4
Angle Performance
After internal calculation the sensor has a remaining error, as shown in Table 7. The error value refers to BZ = 0mT
and the operating conditions given in Table 3 “Operating Range” on Page 17.
The overall angle error represents the relative angle error. This error describes the deviation to the reference line
after zero angle definition.
Autocalibration
The autocalibration enables online parameter calculation and reduces therefore the angle error due to
misalignments.
After start-up the parameters out of the fuses get loaded into flip-flops. The TLE5012 updates these parameters
after a full revolution. The update can be chosen within the Autocalibration Mode (AUTOCAL) bit. It is possible to
do the update after every 22.5°, 11.25° or after tupd.
3.4.5
Signal Processing
The signal path of the TLE5012 is depicted in Figure 11. It consists of the GMR-bridge, ADC, filter and angle
calculation. Depending on the filter configuration a different total delay time is achieved. Additional to this delay
time, the delay time of the interface has to be considered. The delay time leads to an additional angle error at
higher speeds. With enabling the prediction, the signal delay time will be reduced (Figure 12).
Figure 11
TLE5012 Signal path
At FIR_MD = 0 only raw values can be read out, due to the more time consuming angle calculation.
Table 7
Angle Performance
Parameter
Symbol
Values
Unit
Note / Test Condition
Min.
Typ.
Max.
Overall Angle Error (with auto-
calibration)
α
Err
-
0.61)
1) At 25°C, B =30 mT
1.0
°
including lifetime and
temperature drift2)3)
2) Including hysteresis error, caused by revolution direction change.
3) Only with calibrated GMR-compensation parameters of customer setup; Relative error after zero angle definition.
Overall Angle Error (without auto-
calibration)
α
Err
-
0.61)
1.6
°
including temperature
drift2)3)
X
GMR
Y
GMR
SD-
ADC
SD-
ADC
Angle
Calculation
Filter
TLE5012
Microcontroller
IF
del
t
delIF
t
upd
t
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