TLE5012 Datasheet, PDF (12/57 Pages) Infineon Technologies AG – GMR-Based Angular Sensor for Rotor Position Sensing

2.4
Block Diagram
TLE5012
Functional Description
VRG
VRA
X
GMR
SD-
ADC
Y
GMR
SD-
ADC
Temp
SD-
ADC
TLE5012
Osc
VRD
PLL
Digital
Signal
Processing
CCU
Cordic
Fuses
SSC
Interface
Incremental IF
PWM
HSM
Figure 4 TLE5012 Block Diagram
2.5
Functional Block Description
VDD
CLK
CSQ
SCK
DATA
IFA
IFB
GND
2.5.1 Internal Power Supply
The internal stages of the TLE5012 are supplied with different voltage regulators.
• GMR Voltage Regulator VRG
• Analog Voltage Regulator VRA
• Digital Voltage Regulator VRD (derived from VRA)
These regulators are directly connected to the supply voltage V_DD.
2.5.2 Oscillator and PLL
The internal frequency oscillator feeds the Phase Locked Loop (PLL). Also the external clock (CLK) can be used
therefore.
2.5.3 SD-ADC
The SD-ADCs transform the analog GMR-voltages and temperature-voltage into the digital domain.
Target Data Sheet
12
V 0.46, 2009-09