ZSSC3123 Datasheet

© 2018 Integrated Device Technology, Inc.

4

August 16, 2018

10.8.4 Alarm Polarity .....................................................................................................................................................................41

11. Command Mode.........................................................................................................................................................................................42

11.1 Command Format..............................................................................................................................................................................42

11.2 Command Encodings ........................................................................................................................................................................43

11.3 Command Response and Data Fetch ...............................................................................................................................................43

12. EEPROM....................................................................................................................................................................................................46

12.1 IDT Configuration Register (ZMDI_Config, EEPROM Word 02HEX)...................................................................................................48

12.2 Capacitance Analog Front-End Configuration (C_Config, EEPROM Word 06HEX)............................................................................49

12.3 Temperature Analog Front End Configuration (T_Config, EEPROM Word 11HEX)............................................................................50

12.4 Customer Configuration Register (Cust_Config, EEPROM Word 1CHEX)..........................................................................................51

13. Calibration and Signal Conditioning Math...................................................................................................................................................52

13.1 Capacitance Signal Conditioning.......................................................................................................................................................52

13.2 Temperature Signal Compensation...................................................................................................................................................54

13.3 Limits on Coefficient Ranges.............................................................................................................................................................54

14. Application Circuit Examples ......................................................................................................................................................................55

14.1 Digital Output with Optional Alarms...................................................................................................................................................55

14.2 Analog Output with Optional Alarms..................................................................................................................................................56

14.3 Bang-Bang Control System ...............................................................................................................................................................57

14.4 Differential Input Capacitance ...........................................................................................................................................................58

14.5 External Reference Capacitor ...........................................................................................................................................................59

15. ESD/Latch-Up-Protection ...........................................................................................................................................................................60

16. Test.............................................................................................................................................................................................................60

17. Reliability ....................................................................................................................................................................................................60

18. Customization.............................................................................................................................................................................................60

19. Package Outline Drawings .........................................................................................................................................................................60

20. Example Marking Diagram for TSSOP14 Parts..........................................................................................................................................61

21. Storage and Soldering Conditions..............................................................................................................................................................61

22. Glossary .....................................................................................................................................................................................................61

23. Ordering Information...................................................................................................................................................................................62

24. Revision History..........................................................................................................................................................................................62

List of Figures

Figure 1. Pin Assignments for 4.4mm

 5.0mm 14-TSSOP – Top View............................................................................................................7

Figure 2. Best Case Settings (Typical Part)......................................................................................................................................................12

Figure 3. Worst Case Settings (Typical Part) ...................................................................................................................................................13

Figure 4. Typical Current Consumption during Sleep Mode (No Measurements) ............................................................................................13

Figure 5. Output High Drive Strength Graph ....................................................................................................................................................14

Figure 6. Output Low Drive Strength Graph .....................................................................................................................................................14

Figure 7. First Order Fit (Typical Part) ..............................................................................................................................................................15