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ZSSC3122AI1CN Datasheet(PDF) 4 Page - Integrated Device Technology |
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ZSSC3122AI1CN Datasheet(HTML) 4 Page - Integrated Device Technology |
4 / 64 page ZSSC3122 Datasheet © 2016 Integrated Device Technology, Inc. 4 January 25, 2016 4 Command Mode ............................................................................................................................................. 41 4.1 Command Format.................................................................................................................................... 41 4.2 Command Encodings .............................................................................................................................. 41 4.3 Command Response and Data Fetch ..................................................................................................... 42 5 EEPROM ........................................................................................................................................................ 45 5.1.1 IDT Configuration Register (IDT_Config, EEPROM Word 02HEX) .................................................... 47 5.1.2 Capacitance Analog Front End Configuration (C_Config, EEPROM Word 06HEX)........................... 48 5.1.3 Temperature Analog Front End Configuration (T_Config, EEPROM Word 11HEX) .......................... 49 5.1.4 Customer Configuration Register (Cust_Config, EEPROM Word 1CHEX) ........................................ 50 6 Calibration and Signal Conditioning Math ...................................................................................................... 51 6.1 Capacitance Signal Conditioning ............................................................................................................ 51 6.2 Temperature Signal Compensation......................................................................................................... 52 6.3 Limits on Coefficient Ranges................................................................................................................... 53 7 Application Circuit Examples.......................................................................................................................... 54 7.1 Digital Output with Optional Alarms......................................................................................................... 54 7.2 Analog Output with Optional Alarms ....................................................................................................... 55 7.3 Bang-Bang Control System....................................................................................................................... 56 7.4 Differential Input Capacitance ................................................................................................................. 57 7.5 External Reference Capacitor ................................................................................................................. 58 8 ESD/Latch-Up-Protection ............................................................................................................................... 58 9 Pin Configuration and Package...................................................................................................................... 59 10 Test................................................................................................................................................................. 61 11 Reliability ........................................................................................................................................................ 61 12 Customization................................................................................................................................................. 61 13 Part Ordering Codes ...................................................................................................................................... 61 14 Related Documents........................................................................................................................................ 62 15 Glossary ......................................................................................................................................................... 62 16 Document Revision History ............................................................................................................................ 63 List of Figures Figure 1.1 Best Case Settings (Typical Part)..................................................................................................... 11 Figure 1.2 Worst Case Settings (Typical Part) .................................................................................................. 11 Figure 1.3 Typical Current Consumption during Sleep Mode (No Measurements)........................................... 11 Figure 1.4 Output High Drive Strength Graph ................................................................................................... 12 Figure 1.5 Output Low Drive Strength Graph .................................................................................................... 12 Figure 1.6 First Order Fit (Typical Part) ............................................................................................................. 13 Figure 1.7 Second Order Fit (Typical Part) ........................................................................................................ 13 Figure 2.1 ZSSC3122 Block Diagram ................................................................................................................ 14 Figure 3.1 General Operation ............................................................................................................................ 21 Figure 3.2 Power-On Sequence with Fast Startup Bit Set in EEPROM ............................................................ 22 Figure 3.3 Measurement Cycle Timing ............................................................................................................. 23 |
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