TLE5011 Datasheet, PDF (11/43 Pages) Infineon Technologies AG – GMR Angle Sensor

TLE5011
Functional Description
2.5
Functional Block Description
2.5.1 Internal Power Supply
The internal stages of the TLE5011 are supplied with different voltage regulators:
• GMR Voltage Regulator VRG
• Analog Voltage Regulator VRA
• Digital Voltage Regulator VRD
Each voltage regulator has its own overvoltage and undervoltage detection circuits.
2.5.2 GMR Voltage Regulator VRG (VDDG-Voltage)
The GMR voltage regulator supplies all GMR parts:
• GMR bridges
• Test voltages for angle test
• ADC reference voltage
The voltages are monitored in the VRG overvoltage and undervoltage detectors.
2.5.3 Analog Voltage Regulator VRA (VDDA-Voltage)
The analog voltage regulator supplies the analog parts:
• ADCs
• PLL (analog)
• VDD-off comparator
• GND-off comparator
• V_DD Overvoltage detection
The voltages are monitored in the VRA overvoltage and undervoltage detectors.
2.5.4 Digital Voltage Regulator VRD (VDDD-Voltage)
The digital voltage regulator supplies all digital parts:
• Comb filters, FIR filters
• PLL (digital)
• Control FSM with bitmap
• SSC interface
• Counters (Reset, FSYNC, FCNT)
The voltages are monitored in the VRD overvoltage and undervoltage detectors.
2.5.5 Phase-Locked Loop (PLL)
The clock for the sensors is provided externally. This ensures synchronous operation in case of multiple system
participants.
The sensor has its own PLL to generate the necessary clock frequency for the chip operation.
Final Data Sheet
11
V1.1, 2010-05