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PDF ZSSC3122 Data sheet ( Hoja de datos )
| Número de pieza | ZSSC3122 | |
| Descripción | Low Voltage Capacitive Sensor Signal Conditioner | |
| Fabricantes | Zentrum Mikroelektronik Dresden | |
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Data Sheet
Rev. 1.20/ August 2011
ZSSC3122
cLite™ Low Voltage Capacitive Sensor Signal Conditioner
1 page  
ZSSC3122
cLite™ Low Voltage Capacitive Sensor Signal Conditioner
3.6.4 Data Fetch (DF) .......................................................................................................33
3.6.5 Measurement Request (MR) ...................................................................................35
3.6.6 Ready Pin ................................................................................................................36
3.7 PDM (Pulse Density Modulation) ..................................................................................36
3.8 Alarm Output.................................................................................................................38
3.8.1 Alarm Registers .......................................................................................................38
3.8.2 Alarm Operation.......................................................................................................38
3.8.3 Alarm Output Configuration .....................................................................................40
3.8.4 Alarm Polarity ..........................................................................................................40
4 Command Mode .................................................................................................................41
4.1 Command Format .........................................................................................................41
4.2 Command Encodings....................................................................................................41
4.3 Command Response and Data Fetch ...........................................................................42
5 EEPROM ............................................................................................................................46
5.1.1 ZMDI Configuration Register (ZMDI_Config, EEPROM Word 02HEX) ......................48
5.1.2 Capacitance Analog Front End Configuration (C_Config, EEPROM Word 06HEX)...49
5.1.3 Temperature Analog Front End Configuration (T_Config, EEPROM Word 11HEX) ..50
5.1.4 Customer Configuration Register (Cust_Config, EEPROM Word 1CHEX) ................51
6 Calibration and Signal Conditioning Math...........................................................................52
6.1 Capacitance Signal Conditioning ..................................................................................52
6.2 Temperature Signal Compensation ..............................................................................53
6.3 Limits on Coefficient Ranges ........................................................................................54
7 Application Circuit Examples ..............................................................................................55
7.1 Digital Output with Optional Alarms ..............................................................................55
7.2 Analog Output with Optional Alarms .............................................................................56
7.3 Bang-Bang Control System ............................................................................................57
7.4 Differential Input Capacitance .......................................................................................58
7.5 External Reference Capacitor .......................................................................................59
8 ESD/Latch-Up-Protection ...................................................................................................59
9 Pin Configuration and Package ..........................................................................................60
Data Sheet
August 16, 2011
© 2011 Zentrum Mikroelektronik Dresden AG — Rev.1.20
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used
without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes
without notice.
5 of 63
5 Page 
ZSSC3122
cLite™ Low Voltage Capacitive Sensor Signal Conditioner
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Error, -40 to 125°C *, 8, 9,10
AEout
Accuracy
3V10%, 3.3V10%, 5V10%
2.5V10%
2.0V10%
±0.25
±0.50
±0.75
±1.25
±2.5
%FSO
* Parameter not tested during production but guaranteed by design.
1 See section 1.4 for full details for current consumption in each mode.
2 Parameter measured using internal test capacitors (0pF to 7pF).
3 Assumes optimal calibration points of 0°C and 100°C; see section 1.6 for more details.
4 Assumes optimal calibration points of -20°C, 40°C and 100°C; see section 1.6 for more details.
5 See section 3.7 for more details.
6 See section 3 for more details.
7 Timing values are for a nominal oscillator, for worst case, ±10% total frequency variation, multiply by 0.9 (min time) or 1.1 (max time).
8 Accuracy specification includes a 2-point temperature calibration for correcting the internal TC.
9 Accuracy specification assumes maximum parasitics of 10pF to ground.
10 Accuracy specification does not include PDM errors, see the PDM Output electrical parameters for additional errors when using PDM.
Data Sheet
August 16, 2011
© 2011 Zentrum Mikroelektronik Dresden AG — Rev.1.20
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used
without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes
without notice.
11 of 63
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ZSSC3122.PDF ] | |
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