TLE5012_10 Datasheet, PDF (57/64 Pages) Infineon Technologies AG – GMR-Based Angular Sensor for Rotor-Position Sensing

TLE5012
Table 24 Incremental Interface (cont’d)
Parameter
Symbol
Values
Min. Typ. Max.
Index
t_0°
-
5
-
t_90°
-
10 -
t_180°
-
15 -
t_270°
-
20 -
1) Not subject to production test - verified by design/characterization
3.6
Test Structure
Specifications
Unit Note / Test Condition
µs
0°¹⁾
µs
90°¹⁾
µs
180°¹⁾
µs
270°¹⁾
3.6.1 ADC Test Vectors
It is possible to feed the ADCs with appropriate values to simulate a certain magnet position and other GMR
effects. This test can be activated within the SIL register (ADCTV_EN). With ADCTV_Y and ADCTV_X the vector
length can be adjusted as shown in Figure 28.
The values are generated with resistors on the chip.
The following X/Y ADC values can be programmed:
• 4 points, circle amplitude = 70% (0°,90°, 180°, 270°)
• 8 points, circle amplitude = 100% (0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°)
• 8 points, circle amplitude = 122.1% (35.3°, 54.7°, 125.3°, 144.7°, 215.3°, 234.7°, 305.3°, 324.7°)
• 4 points, circle amplitude = 141.4% (45°, 135°, 225°, 315°)
Note: The 100% values typically correspond to 21700 digits and the 70% values to 15500 digits.
Table 25 ADC Test Vectors
Register bits
X/Y values (decimal)
min.
000
001
010
011
100¹⁾
101
110
111
1) Invalid
typ.
0
15500
21700
32767
0
-15500
-21700
-32768
max.
Final Data Sheet
57
V 1.0, 2010-11