IDT ZMID5201 User Manual For Getting Started

Contents
1. Introduction ...................................................................................................................................................................................................3
2. Inductive Sensing Technology Introduction ..................................................................................................................................................3
2.1 Device Block Diagram .........................................................................................................................................................................6
3. Getting Started .............................................................................................................................................................................................7
3.1 LC Tank - Tx Front-End Tuning ..........................................................................................................................................................7
3.2 Device Initialization ..............................................................................................................................................................................8
3.2.1 Output Mode Selection .........................................................................................................................................................8
3.3 Offset Check for Rx Coils ....................................................................................................................................................................9
3.4 Gain Stage Setting ............................................................................................................................................................................11
3.5 Input Amplitude Offset Compensation ...............................................................................................................................................12
3.6 Output Calibration ..............................................................................................................................................................................13
3.7 Output Linearization ..........................................................................................................................................................................14
4. Internal Memory ..........................................................................................................................................................................................17
5. Programming the ZMID520x EEPROM ......................................................................................................................................................19
6. Glossary .....................................................................................................................................................................................................19
7. Revision History ..........................................................................................................................................................................................20
List of Figures
Figure 1. Tx Loop Magnetic Field .......................................................................................................................................................................3
Figure 2. Current Paths and Shapes for Coils - Example for Linear Position Sensing ......................................................................................4
Figure 3. Geometrical Illustration for Coils and Target - Example for Linear Position Sensing..........................................................................5
Figure 4. Main Internal Functional Block Diagram ..............................................................................................................................................6
Figure 5. ZMID520x Transmitter LC Tank ..........................................................................................................................................................7
Figure 6. TX Oscillation and LF-U 5 Probe .........................................................................................................................................................8
Figure 7. ZMID520x EEPROM Memory Values - ZMID5203 Example for the Linear Output Mode Settings ..................................................9
Figure 8. ZMID520x EEPROM Gain Stage Setting - Example using the ZMID5203 ........................................................................................9
Figure 9. Coil Offset Reading - Example using the ZMID5203 ........................................................................................................................10
Figure 10. Magnitude for Gain Selection - Example for the ZMID5203 .............................................................................................................11
Figure 11. ZMID520x Input Amplitude Offset Compensation - Example for the ZMID5203 ..............................................................................12
Figure 12. Output Calibration ..............................................................................................................................................................................13
Figure 13. Output Calibration Verification ...........................................................................................................................................................14
Figure 14. Correction Mode Selection ................................................................................................................................................................14
Figure 15. Measured Value Readings for 9 Linearization Points ........................................................................................................................15
Figure 16. Input Fields for the 9 Linearization Points Measured Values .............................................................................................................16
Figure 17. ZMID520x Internal Memory ...............................................................................................................................................................17
© 2018 Integrated Device Technology, Inc.
ZMID520x User Guide for Getting Started
1 April 6, 2018