ZSSC313x - Data Sheet

Data Sheet
Rev. 1.24 / April 2015
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized
Switch Applications
Multi-Market Sensing Platforms
Precise and Deliberate
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
Brief Description
Benefits
The ZSSC3131 is a member of the ZSSC313x
product family of CMOS integrated circuits designed
for automotive/ industrial sensor applications. All
family members are well suited for highly-accurate
amplification and sensor-specific correction of
resistive bridge sensor signals. An internal 16-bit
RISC microcontroller running a correction algorithm
compensates sensor offset, sensitivity, temperature
drift, and non-linearity of the connected sensor
element. The required calibration coefficients are
stored by the one-pass calibration procedure in an
on-chip EEPROM.

The ZSSC3131 is optimized for simple switch and
cost-sensitive sensor applications. The integrated
adjustable digital filter enables building fast-switching real-time applications as well as stabilized
applications for switching input signals that are
unstable or disrupted.















Available Support


Adjustable to nearly all resistive bridge sensor
types: maximum analog gain of 105; maximum
overall gain of 420
Sample rate up to 200 Hz
ADC resolution 13/14 bit
Internal temperature compensation
Integrated adjustable digital filter
Digital compensation of sensor offset, sensitivity,
temperature drift, and non-linearity
Output options: ratiometric analog voltage output
(5 - 95% maximum, 12.4 bit resolution) or
TM
ZACwire (digital One-Wire Interface (OWI))
Sensor biasing by voltage
High voltage protection up to 33 V
Supply current: Max. 5.5mA
Reverse polarity and short circuit protection
Wide operation temperature range:
-40 to +150°C
Traceability by user-defined EEPROM entries
* Note: I2C™ is a trademark of NXP.
** FSO = Full Scale Output.


Features


Family approach offers the best fitting IC selection to build cost-optimized applications
No external trimming components required
Low number of external components needed
PC-controlled configuration and One-Pass/ endof-line calibration via I²C™* or ZACwire™
interface: Simple, cost-efficient, quick, and precise
High accuracy (0.25% FSO** @ -25 to +85°C;
0.5% FSO @ -40 to +125°C)
Optimized for automotive/industrial environments
due to robust protection circuitries, excellent
electromagnetic compatibility, and AEC-Q100
qualification
Evaluation Kits
Application Notes
Mass Calibration System
Physical Characteristics



Supply voltage 4.5 to 5.5 V
Operation temperature: -40°C to +125°C
(-40°C to +150°C extended temperature range
depending on product version)
Available in RoHS-compliant JEDEC-SSOP14
package or delivery as die
ZSSC3131 Minimum Application Requirements
VCC
Sensor
Module
ZSSC3131
OUT
GND
For more information, contact ZMDI via [email protected].
© 2015 Zentrum Mikroelektronik Dresden AG — Rev.1.24 — April 10, 2015. 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.
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
ZSSC3131 Switch Application Example
Out
GND
C2
100nF
8 VSSE
VDDE 7
C3
47nF
11 VBR_B
12 VBP
C5
VSUPP
n.c. 5
R1
2kΩ
12 VSUPP
SCL 4
Out
13 GPIO
µC
10 VBN
VDD 6
ZSSC3131
9 AOUT
Sensor Bridge
C4
VSUPP
+4.5V to +5.5V
SDA 3
14 GND
13 VBR_T
VSSA 2
14 N.C.
VDDA 1
C1
100nF
Ordering Information (See data sheet section 8 for complete delivery options.)
Product Sales Code
Description
Package
ZSSC3131BE1
ZSSC3131 die – tested; temperature range -40 to +150°C
Unsawn wafer: add “B” to sales code
Die on frame: add “C” to sales code
ZSSC3131BA1
ZSSC3131 die – tested; temperature range -40 to +125°C
Unsawn wafer: add “B” to sales code
Die on frame: add “C” to sales code
ZSSC3131BE2
ZSSC3131 SSOP14 – temperature range -40 to +150°C
Tube: add “T” to sales code
Tape & Reel: add “R”
ZSSC3131BA2
ZSSC3131 SSOP14 – temperature range -40 to +125°C
Tube: add “T” to sales code
Tape & Reel: add “R”
ZSSC313xKITV1.1
ZSSC313x Evaluation Kit, revision 1.1, including Evaluation Board,
ZSSC3131 IC samples, USB cable (software can be downloaded from
the product page www.zmdi.com/zssc3131)
Kit
ZSSC313x Mass
Calibration System V1.1
Modular Mass Calibration System (MSC) for ZSSC313x including
MCS boards, cable, connectors (software can be downloaded from
the product page www.zmdi.com/zssc3131)
Kit
Sales and Further Information
www.zmdi.com
[email protected]
Zentrum Mikroelektronik
Dresden AG
Global Headquarters
Grenzstrasse 28
01109 Dresden, Germany
ZMD America, Inc.
1525 McCarthy Blvd., #212
Milpitas, CA 95035-7453
USA
Central Office:
Phone +49.351.8822.306
Fax
+49.351.8822.337
USA Phone 1.855.275.9634
Phone +1.408.883.6310
Fax
+1.408.883.6358
European Technical Support
Phone +49.351.8822.7.772
Fax
+49.351.8822.87.772
DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The
information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer,
licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or
in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any
customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for
any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty,
tort (including negligence), strict liability, or otherwise.
European Sales (Stuttgart)
Phone +49.711.674517.55
Fax
+49.711.674517.87955
Zentrum Mikroelektronik
Dresden AG, Japan Office
2nd Floor, Shinbashi Tokyu Bldg.
4-21-3, Shinbashi, Minato-ku
Tokyo, 105-0004
Japan
ZMD FAR EAST, Ltd.
3F, No. 51, Sec. 2,
Keelung Road
11052 Taipei
Taiwan
Phone +81.3.6895.7410
Fax
+81.3.6895.7301
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
Zentrum Mikroelektronik
Dresden AG, Korea Office
U-space 1 Building
Unit B, 906-1
660, Daewangpangyo-ro
Bundang-gu, Seongnam-si
Gyeonggi-do, 463-400
Korea
Phone +82.31.950.7679
Fax
+82.504.841.3026
© 2015 Zentrum Mikroelektronik Dresden AG — Rev.1.24 — April 10, 2015.
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.
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
Contents
1
Electrical Characteristics ............................................................................................................................... 6
1.1. Absolute Maximum Ratings .................................................................................................................... 6
1.2. Operating Conditions .............................................................................................................................. 6
1.3. Electrical Parameters ............................................................................................................................. 7
1.3.1. Supply Current and System Operation Conditions .......................................................................... 7
1.3.2. Analog Front-End (AFE) Characteristics ......................................................................................... 7
1.3.3. Temperature Measurement ............................................................................................................. 7
1.3.4. A/D Conversion ................................................................................................................................ 7
1.3.5. DAC and Analog Output .................................................................................................................. 8
1.3.6. System Response ............................................................................................................................ 8
1.4. Interface Characteristics and EEPROM ............................................................................................... 10
TM
1.4.1. I²C Interface ................................................................................................................................ 10
1.4.2. ZACwire™ One-Wire Interface (OWI) ........................................................................................... 10
1.4.3. EEPROM ........................................................................................................................................ 10
2 Circuit Description ....................................................................................................................................... 11
2.1. Signal Flow ........................................................................................................................................... 11
2.2. Application Modes ................................................................................................................................ 12
2.3. Analog Front-End (AFE) ....................................................................................................................... 12
2.3.1. Programmable Gain Amplifier (PGA) ............................................................................................. 12
2.3.2. Offset Compensation ..................................................................................................................... 13
2.3.3. Measurement Cycle ....................................................................................................................... 13
2.3.4. Analog-to-Digital Converter ............................................................................................................ 14
2.4. Temperature Measurement .................................................................................................................. 15
2.5. System Control and Conditioning Calculation ...................................................................................... 15
2.5.1. General Working Modes ................................................................................................................ 15
2.5.2. Startup Phase ............................................................................................................................... 15
2.5.3. Conditioning Calculation ................................................................................................................ 16
2.6. Analog or Digital Output ....................................................................................................................... 16
2.7. Serial Digital Interface .......................................................................................................................... 17
2.8. Failsafe Features .................................................................................................................................. 17
2.9. High Voltage, Reverse Polarity, and Short Circuit Protection .............................................................. 17
3 Application Circuit Examples ....................................................................................................................... 18
4 Pin Configuration and Package ................................................................................................................... 19
5 ESD Protection ............................................................................................................................................ 20
6 Quality and Reliability .................................................................................................................................. 20
7 Customization .............................................................................................................................................. 20
8 Ordering Information ................................................................................................................................... 21
9 Related Documents ..................................................................................................................................... 22
10 Glossary ...................................................................................................................................................... 22
11 Document Revision History ......................................................................................................................... 24
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
4 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
List of Figures
Figure 2.1
Figure 2.2
Figure 3.1
Figure 4.1
Block Diagram of the ZSSC3131 ................................................................................................... 11
Measurement Cycle with 1 Bridge Sensor Signal Measurement per Special Measurement ........ 13
Application with On-Chip Diode Temperature Sensor ................................................................... 18
ZSSC3131 SSOP14 Pin Diagram ................................................................................................. 19
List of Tables
Table 1.1
Table 1.2
Table 1.3
Table 1.4
Table 2.1
Table 2.2
Table 3.1
Table 4.1
Data Sheet
April 10, 2015
Absolute Maximum Ratings ............................................................................................................. 6
Operating Conditions ....................................................................................................................... 6
Electrical Parameters ....................................................................................................................... 7
Interface Characteristics and EEPROM ........................................................................................ 10
Adjustable Gains, Resulting Sensor Signal Spans and Common Mode Ranges ......................... 12
ADC Resolution versus Output Resolution and Sample Rate ....................................................... 15
External Components for Application Circuit Examples ................................................................ 18
Pin Configuration and Definition .................................................................................................... 19
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
1
Electrical Characteristics
1.1.
Absolute Maximum Ratings
Note: The absolute maximum ratings are stress ratings only. The device might not function or be operable above
the operating conditions given in section 1.2. Stresses exceeding the absolute maximum ratings might also
damage the device. In addition, extended exposure to stresses above the recommended operating conditions
might affect device reliability. ZMDI does not recommend designing to the “Absolute Maximum Ratings.”
Parameters apply in operation temperature range and without time limitations.
Table 1.1
Absolute Maximum Ratings
No.
Parameter
Symbol
1)
1.1.1
Supply voltage
1.1.2
Potential at AOUT pin
1)
VOUT
1.1.3
Analog supply voltage
1)
VDDAAMR
1.1.4
Voltage at all analog and
digital IO pins
VA_IO
VD_IO
1.1.5
Storage temperature
TSTG
1)
1.2.
VDDEAMR
Conditions
Min
Max
Unit
To VSSE, refer to
section 3 for application
circuits
-33
33
VDC
Referenced to VSSE
-33
33
VDC
Referenced to VSSA,
VDDE - VDDA < 0.35V
-0.3
6.5
VDC
Referenced to VSSA
-0.3
VDDA + 0.3
VDC
-55
150
C
Refer to the ZSSC313x High Voltage Protection Description for specification and detailed conditions.
Operating Conditions
All voltages are referenced to VSSA.
Table 1.2
Operating Conditions
No.
Parameter
1.2.1
Ambient temperature
1.2.2
Supply voltage
1.2.3
Bridge resistance
3) 4)
Symbol
1) 2)
Conditions
Min
Typ
Max
Unit
TAMB_TQE
Extended Temperature
Range (TQE)
-40
150
C
TAMB_TQA
Advanced-Performance
Temperature Range
(TQA)
-40
125
C
TAMB_TQI
Best-Performance
Temperature Range (TQI)
-25
85
C
5.5
VDC
25
k
VDDE
4.5
RBR
2
5.0
1)
Maximum operation temperature range depends on product version (refer to section 8).
2)
See the temperature profile description in the ZSSC313x Technical Note—Die & Package Dimensions.
3)
No measurement in mass production; parameter is guaranteed by design and/or quality observation.
4)
Symmetric behavior and identical electrical properties (especially the low pass characteristic) of both sensor inputs of the ZSSC3131 are required.
Unsymmetrical conditions of the sensor and/or external components connected to the sensor input pins of the ZSSC3131 can generate a failure in
signal operation.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
6 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
1.3.
Electrical Parameters
All parameter values are valid under the operating conditions specified in section 1.2 (special definitions
excluded). All voltages referenced to VSSA.
Note: See important notes at the end of Table 1.3.
Table 1.3
Electrical Parameters
No.
Parameter
Symbol
Conditions
1.3.1.
Supply Current and System Operation Conditions
1.3.1.1
Supply current
1.3.1.2
Oscillator frequency
1.3.2.
Analog Front-End (AFE) Characteristics
1.3.2.1
Input span
1.3.2.2
Parasitic differential input
1)
offset current
IS
1)
1.3.2.3
Common mode
input range
1.3.3.
Temperature Measurement
fOSC
Min
Typ
Without bridge and load
current, fOSC  3 MHz
3
Max
Unit
5.5
mA
4
MHz
Adjustment guaranteed for
full temperature range
(TAMB_TQE)
2
VIN_SP
Analog gain: 105 to 2.8
8
275
mV/V
IIN_OFF
Temperature range
TAMB_TQE
-10
10
nA
Temperature range
TAMB_TQI
-2
2
nA
VIN_CM
Depends on gain adjustment; see section 2.3.1
0.29
0.65
VDDA
STTSI
Raw values,
without conditioning
700
2700
ppm FS
/K
13
14
Bit
(Refer to section 2.4.)
1.3.3.1
Internal temperature diode
sensitivity
1.3.4.
A/D Conversion
1.3.4.1
A/D resolution
1.3.4.2
DNL
1.3.4.3
1)
1)
rADC
DNLADC
rADC=13bit, fOSC=3MHz,
best fit, complete AFE,
range according to 1.3.4.5
0.95
LSB
INL TQA
INLADC
rADC=13bit, fOSC=3MHz,
best fit, complete AFE,
range according to 1.3.4.5
4
LSB
1.3.4.4
INL TQE
INLADC_TQE
rADC=13bit, fOSC=3MHz,
best fit, complete AFE,
range according to 1.3.4.5,
temperature range TAMB_TQE
5
LSB
1.3.4.5
ADC input range
0.9
VDDA
Data Sheet
April 10, 2015
VADC_IN
0.1
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
7 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
No.
Parameter
1.3.5.
DAC and Analog Output
1.3.5.1
D/A resolution
1.3.5.2
Output current sink and
source for VDDE=5V
Symbol
rDAC
IOUT_SRC/SINK
1.3.5.3
Short circuit current
IOUT_max
1.3.5.4
Output signal range
VOUT_RANGE
1)
1.3.5.5
Output slew rate
1.3.5.6
Output resistance in
diagnostic mode
1.3.5.7
Load capacitance
1.3.5.8
DNL
DNLOUT
1.3.5.9
INL TQA
INLOUT
1)
1.3.5.10 INL TQE
SROUT
2.5
mA
VOUT: 10-90%, RLOAD ≥1kΩ
5
mA
-25
25
mA
With RLOAD ≥ 2k
0.05
0.95
VDDE
With RLOAD ≥ 1k
0.1
0.90
VDDE
CLOAD < 50nF
0.1
To VDDE or VSSE
2)
V/µs
-1.5
1.5
LSB
Best fit, rDAC=12bit
-5
5
LSB
Best fit, rDAC=12bit,
temperature range TAMB_TQE
-8
8
LSB
IOUT_LEAK
In case of power or
ground loss
-25
25
µA
tSTARTUP
1-step ADC, fOSC=3MHz
rADC=14bit)
35
ms
tRESPONSE
1-step ADC, fOSC=4MHz,
rADC=13bit
17.4
ms
1-step ADC
200
Hz
Shorted inputs
10
mV
3
mV
Response time
(100% input step; refer to
Table 2.2)
1.3.6.3
Bandwidth
(In comparison to an
equivalent analog SSC.
Refer to Table 2.2)
1.3.6.4
Analog output noise
1)
peak-to-peak
VNOISE_PP
Analog output noise
1)
RMS
VNOISE_RMS
April 10, 2015
VOUT: 5-95%, RLOAD ≥ 2kΩ
nF
1.3.6.2
Data Sheet
Bit
150
Startup time
st
(To 1 output, ROM check
disabled)
1.3.6.5
12
Unit
C3 + CLOAD
(refer to section 3)
CLOAD
1.3.6.1
1)
Max

System Response
1)
Analog output, 10-90%
Typ
82
1.3.6.
1) 3)
Min
Diagnostic range:
<4 to 96>%, RLOAD ≥ 2k
<8 to 92>%, RLOAD ≥ 1k
ROUT_DM
INLOUT_TQE
1.3.5.11 Output leakage current
at 150°C
Conditions
BW
8.7
13.1
bandwidth  10kHz
Shorted inputs
bandwidth  10kHz
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
8 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
No.
Parameter
1.3.6.6
Ratiometricity error
1.3.6.7
Overall failure
Deviation from ideal line
including INL, gain, offset
and temperature errors.
No sensor-caused effects.
Failure for digital readout
shown in parenthesis.
Symbol
RE
Conditions
Min
Maximum error for
VDDE=5V to 4.5/5.5V
Unit
1000
ppm
0.25
(0.1)
% FS
FOVERALL_TQA fOSC≤3MHz, rADC=13bit,
temperature range TAMB_TQA
0.5
(0.25)
% FS
FOVERALL_TQE fOSC≤3MHz, rADC=13bit,
temperature range TAMB_TQE
1.0
(0.5)
% FS
No measurement in mass production; parameter is guaranteed by design and/or quality observation.
2)
Minimum output voltage to VDDE or maximum output voltage to VSSE.
3)
Depends on resolution and configuration. Start routine begins approximately 0.8ms after power on.
April 10, 2015
Max
fOSC≤3MHz, rADC=13bit,
temperature range TAMB_TQI
FOVERALL_TQI
1)
Data Sheet
Typ
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
9 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
1.4.
Interface Characteristics and EEPROM
Table 1.4
Interface Characteristics and EEPROM
No.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
TM
1.4.1.
I²C Interface
(Refer to the ZSSC313x Functional Description for timing details)
1.4.1.1
I²C™ voltage level HIGH
1.4.1.2
I²C™ voltage level LOW
1)
1.4.1.3
Slave output level LOW
1.4.1.4
SDA load capacitance
1)
1.4.1.5
1)
SCL clock frequency
1)
VI²C,HIGH
0.8
VI²C,LOW
VI²C,LOW_OUT
Open drain, IOL<2mA
CSDA
fI²C
1)
fOSC≥2MHz
1.4.1.6
Internal pull-up resistor
1.4.2.
ZACwire™ One-Wire Interface (OWI)
(Refer to the ZSSC313x Functional Description for timing details)
1.4.2.1
OWI voltage level HIGH
1.4.2.2
1.4.2.3
VDDA
1)
OWI voltage level LOW
1)
Slave output level LOW
1)
1)
1.4.2.4
Start window
1.4.3.
EEPROM
1.4.3.1
Ambient temperature for
1)
EEPROM programming
1.4.3.2
Write cycles
1)
1.4.3.3
Read cycles
1) 2)
1.4.3.4
Data retention
1.4.3.5
Programming time
RI²C,PULLUPI
25
VOWI,HIGH
At fOSC=3MHz
TAMB_EEP
96
175
-40
Write <= 85°C
400
pF
400
kHz
100
k
0.2
VDDA
0.15
VDDA
455
ms
150
C
100
≤175°C
8 * 10
tEEP_RETENTION 1300h at 175°C
( = 3000h at 150°C
+ 27000h at 125°C
+ 100000h at 55°C )
15
nEEP_READ
1)
VDDA
100 000
Write up to 150°C
1) 3)
0.15
VDDA
VOWI,LOW_OUT Open drain, IOL<2mA
nEEP_WRI
VDDA
0.75
VOWI,LOW
tOWI,STARTWIN
0.2
tEEP_WRI
Per written word
12
8
a
ms
1)
No measurement in mass production, parameter is guaranteed by design and/or quality observation.
2)
Valid for the dice. Note that the package and the temperature version cause additional restrictions.
3)
Over lifetime and valid for the dice. Use the calculation sheet ZSSC313x Temperature Profile Calculation Sheet for temperature stress calculation.
Note that the package and the temperature version cause additional restrictions.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
10 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
2
2.1.
Circuit Description
Signal Flow
The ZSSC3131’s signal path is partly analog and partly digital. The analog section is differential – this means the
differential bridge sensor signal is internally handled via two signal lines that are rejected symmetrically around an
internal common mode potential (analog ground = VDDA/2).
As a result of the differential design, it is possible to amplify positive and negative input signals that are within the
common mode range of the signal input.
Figure 2.1
Block Diagram of the ZSSC3131
PGA
MUX
EEPROM
TS
ADC
Analog Domain
CMC
ZACwire™
RAM
DAC
I2C™ *
Digital
Data I/O
BAMP
Analog
Output
ROM
ZSSC3131
Digital Domain
* Note: I2C™ is a trademark of NXP.
PGA
Programmable Gain Amplifier
TS
On-chip Temperature Sensor (pn-junction)
MUX
Multiplexer
ADC
Analog-to-Digital Converter
CMC
Calibration Microcontroller
ROM
Read-Only Memory for Correction Formula and Algorithm
RAM
Volatile Memory for Calibration Parameters and Configuration
EEPROM
Non-volatile Memory for Calibration Parameters and Configuration
DAC
Digital-to-Analog Converter
BAMP
Output Buffer Amplifier
The differential signal from the bridge sensor is pre-amplified by the programmable gain amplifier (PGA). The
multiplexer (MUX) transmits the signals from either the bridge sensor or the internal temperature sensor to the
analog-to-digital converter (ADC) in a specific sequence. The ADC converts these signals into digital values.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
The digital signal conditioning is processed by the calibration microcontroller (CMC). It is based on a correction
formula that uses sensor-specific coefficients determined during calibration. The formula is located in ROM, and
the sensor-specific coefficients are stored in EEPROM. Depending on the programmed output configuration, the
conditioned sensor signal is output as an analog signal or alternatively can be readout via a digital serial interface
(I²C™ or ZACwire™). The configuration data and the correction parameters must also be programmed into the
EEPROM via the digital interfaces.
2.2.
Application Modes
For each application, a configuration set must be established by programming the on-chip EEPROM for the
following modes:

Sensor channel
 Input range: The gain adjustment of the analog front-end (AFE) with respect to the maximum sensor
signal span and the zero point of the A/D conversion must be selected.
 Resolution/response time: The A/D converter must be configured for resolution. These settings influence
the sampling rate and the signal integration time, and thus, the noise immunity.

Temperature
 Temperature measurement
2.3.
Analog Front-End (AFE)
The analog front-end (AFE) consists of the three-stage programmable gain amplifier (PGA), the multiplexer
(MUX), and the analog-to-digital converter (ADC).
2.3.1.
Programmable Gain Amplifier (PGA)
Table 2.1 shows the adjustable gains, the sensor signal spans, and the valid common mode range.
Table 2.1
1)
Adjustable Gains, Resulting Sensor Signal Spans and Common Mode Ranges
PGA Gain
aIN
Maximum Span
1)
VIN_SP [mV/V]
Input Common Mode Range
VIN_CM [% VDDA]
105
7.1
29 to 65
70
10.7
29 to 65
52.5
14.3
29 to 65
35
21.4
29 to 65
26.3
28.5
29 to 65
14
53.75
29 to 65
9.3
80
29 to 65
7
107
29 to 65
2.8
267
32 to 57
Recommended maximum internal signal range is 75% of the supply voltage.
Span is calculated by the following formula: Span = 0.75 (VBR_T – VBR_B) / Gain.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
12 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
2.3.2.
Offset Compensation
The ZSSC3131 processes a sensor-offset correction during the digital signal conditioning by the calibration
microcontroller (CMC).
2.3.3.
Measurement Cycle
The measurement cycle is controlled by the CMC. Depending on EEPROM settings, the multiplexer (MUX)
selects the following input signals in a defined sequence:



Pre-amplified bridge sensor signal
Temperature sensor signal
Internal offset of the input channel (VOFF)
The cycle diagram in Figure 2.2 shows the basic structure of the measurement cycle. After power-on, the startup
routine is processed, which performs all required measurements to expedite acquiring an initial valid conditioned
sensor output. After the startup routine, the normal measurement cycle runs.
Figure 2.2
Measurement Cycle with 1 Bridge Sensor Signal Measurement per Special Measurement
CTAZ
CT
Measurement Cycle with Bridge Signal Output
BRAZ
CFGAPP:BRCNT = 0
Startup
BR
(1 bridge sensor signal measurement per special measurement)
CTAZ
BR
CT
BR
CMV
BR
SSCP
BR
SSCN
BR
BRAZ
12
Measurements
per Cycle
Measurement Cycle
Measurement Cycle Phases
Main Signals Measurement
BR
Safety Functions Measurement *
Bridge Sensor
Measurement
BRAZ Bridge Sensor
Auto-Zero Measurement
Data Sheet
April 10, 2015
Calibration Temperature
Measurement
SSCP Sensor Short Check
CTAZ Calibration Temperature
SSCN Sensor Short Check
CT
Auto-Zero Measurement
Positive-Biased Measurement
Negative-Biased Measurement
Analog Output Updated
CMV
Sensor Common Mode Voltage
Measurement
Bridge Sensor Signal
* Not available for all ZSSC313x products. See Table 1.1
in the ZSSC313x Functional Description.
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
13 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
2.3.4.
Analog-to-Digital Converter
The A/D converter is implemented using full-differential switched-capacitor technique.
Programmable ADC resolutions are rADC=<13, 14>bit.
The A/D conversion is integrating, inherently monotone, and insensitive to short and long term instability of the
clock frequency. The conversion time tADC depends on the desired resolution and can be roughly calculated by
equation (1):
t ADC 
2rADC
 fOSC 


 2 
(1)
Where
rADC
Resolution of A/D conversion
fOSC
Frequency of internal oscillator (refer to 1.3.1)
Refer to the ZSSC313x Bandwidth Calculation Sheet for a detailed calculation of sampling time and bandwidth.
The result of the A/D conversion is a relative counter result Z corresponding to the following equation:
Z  2rADC  (
VADC_DIFF
VADC_REF
 RS)
(2)
Where
rADC
Resolution of A/D conversion
VADC_DIFF
Differential ADC input voltage
VADC_REF
ADC reference voltage as selected by the BRREF bits in the EEPROM configuration word
CFGAPP (VVBR_T – VVBR_B if BRREF= 0) or (VVDDA – VVSSA if BRREF=1)*
RS
Digital ADC Range Shift (RS = 1/16, 1/8, 1/4, 1/2) controlled by the ADCRS bits in the
EEPROM configuration word CFGAFE) Error! Bookmark not defined.
With the RS value, a sensor input signal can be shifted in the optimal input range of the ADC.
The condition required for ensuring the specified accuracy, stability, and non-linearity parameters of the analog
front-end is that the differential ADC input voltage VADC_DIFF does not exceed the range of 10% to 90% of the ADC
reference voltage VADC_REF. This requirement must be met for the whole temperature range and for all sensor
tolerances.
* Refer to the ZSSC313x Functional Description for more information on EEPROM contents.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
14 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
Table 2.2
ADC Resolution versus Output Resolution and Sample Rate
ADC
Adjustment
Output Resolution
1)
Sample Rate
2)
Averaged Bandwidth
2)
rADC
[bit]
Digital
[bit]
Analog
[bit]
fOSC=3MHz
[Hz]
fOSC=4MHz
[Hz]
fOSC=3MHz
[Hz]
fOSC=4MHz
[Hz]
13
13
12
345
460
130
172
14
14
12
178
237
67
89
1)
Output resolution does not exceed ADC resolution. PGA gain should be such that the differential ADC input signal uses at least 50% of ADC input
range to ensure maximum achievable output resolution.
2)
Refer to the ZSSC313x Bandwidth Calculation Sheet for a detailed calculation of sampling time and bandwidth.
2.4.
Temperature Measurement
The ZSSC3131 supports acquiring temperature data needed for conditioning of the sensor signal using an
internal pn-junction temperature sensor. Refer to the ZSSC313x Functional Description for a detailed explanation
of temperature sensor adaptation and adjustment.
2.5.
System Control and Conditioning Calculation
The system control supports the following tasks/features:





2.5.1.
Managing the startup sequence
Controlling the measurement cycle regarding to the EEPROM-stored configuration data
Sensor signal conditioning (calculation of the 16-bit correction for each measurement signal using the
EEPROM-stored conditioning coefficients and the ROM-based formulas)
Processing communication requests received via the digital interfaces
Performing failsafe tasks and message detected errors by setting diagnostic states
General Working Modes
ZSSC3131 supports three different working modes:



2.5.2.
Normal Operation Mode (NOM) – for continuous processing of signal conditioning
Command Mode (CM) – for calibration and access to all internal registers
Diagnostic Mode (DM) – for failure messages
Startup Phase
*
After power-on, the startup phase is processed, which includes
*

Internal supply voltage settling including reset of the circuitry by the power-on reset block (POR).
Refer to the ZSSC313x High Voltage Protection Description for power-on/off thresholds.
Duration (beginning with VVDDA-VVSSA=0V): 500µs to 2ms; AOUT: high impedance.

System start and configuration, EEPROM readout, and signature check.
Duration: ~200µs; AOUT: lower diagnostic range (LDR).
All timing values are roughly estimated for an oscillator frequency fOSC=3MHz and are proportional to that frequency.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
15 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications

Processing the measurement cycle start routine.
Duration: 5x A/D conversion time; AOUT behavior depends on configured one-wire communication mode
(refer to section 2.6):
OWIANA or OWIDIS  AOUT: lower diagnostic range (LDR)
OWIWIN or OWIENA  AOUT: tri-state
If an error is detected during the startup phase, the Diagnostic Mode (DM) is activated and the analog output at
the AOUT pin remains in the lower diagnostic range.
After the startup phase, the continuous running measurement and sensor signal conditioning cycle is started, and
analog or digital output of the conditioned sensor signal is activated. If the one-wire communication mode
OWIWIN is selected, the OWI startup window expires before analog output is available.
2.5.3.
Conditioning Calculation
The digitalized value for the bridge signal is processed with a conditioning formula to remove offset and
rd
temperature dependency and to compensate nonlinearity up to 3 order. The result is a non-negative 15-bit value
for the measured bridge sensor signal in the range [0; 1). This value is available for readout via I²C™ or OWI
communication. For the analog output, the value is clipped to the programmed output limits.
Note:
2.6.
The extent of signal deviation that can be compensated by the conditioning calculation depends on the
specific sensor signal characteristics. For a rough estimation, assume the following: offset
compensation and gain correction are not limited. Note that resolution of the digitally gained signal is
determined by the ADC resolution in respect to the dynamic input range used. The temperature
correction includes first and second order terms and should be adequate for practically all relevant
cases. The non-linearity correction of the sensor signal is possible for second-order up to
approximately 30% FS regarding ideal fit and for third-order up to about 20% FS. Overall, the
conditioning formula applied is able to reduce the non-linearity of the sensor signal by a factor of 10.
Analog or Digital Output
The AOUT pin is used for analog output and for one-wire communication (OWI). The latter can be used for digital
readout of the conditioned sensor signal and for end-of-line sensor module calibration. The ZSSC3131 supports
different modes for the analog output in interaction with OWI communication as selected by EEPROM configuration or by command:

OWIENA:
Analog output is deactivated; OWI readout of the signal data is enabled.

OWIWIN:
Analog output starts after the startup phase and after the OWI startup window if OWI
communication is not initiated; OWI communication for configuration or for end-of-line
calibration can be started during the OWI startup window (maximum ~500ms) by sending the
START_CM command.

OWIANA:
Analog output starts after the startup phase; OWI communication for configuration or for endof-line calibration can be started during the OWI startup window (maximum ~500ms) by
sending the START_CM command; for command transmission, the analog output driven at
the AOUT pin must be overwritten by the external communication master (AOUT drive
capability is current-limited).

OWIDIS:
Analog output starts after the startup phase; OWI readout of the signal data is disabled.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
16 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
The analog output signal is driven by an offset compensated, rail-to-rail output buffer that is current-limited to
prevent damage to the ZSSC3131 in the event of a short circuit between the analog output and power supply or
ground. Output resolution of at least 12-bit in the range of 10% to 90% FS is ensured by a 12.4-bit resistor string
DAC.
2.7.
Serial Digital Interface
TM
TM
The ZSSC3131 includes a serial digital I²C interface and a ZACwire interface for one-wire communication
(OWI). The digital interfaces allow configuration and calibration of the sensor module. OWI communication can be
used to perform an end-of-line calibration via the analog output pin AOUT of a completely assembled sensor
module. The interfaces also provide the readout of the conditioned sensor signal data during normal operation.
Refer to the ZSSC313x Functional Description for a detailed description of the serial interfaces and the
communication protocols.
2.8.
Failsafe Features
The ZSSC3131 detects various failures. When a failure is detected, Diagnostic Mode (DM) is activated. DM is
indicated by setting the output pin AOUT to the Lower Diagnostic Range (LDR). When using digital serial
communication protocols (I²C™ or OWI) to read conditioning results data, the error status is indicated by a
specific error code.
A watchdog timer controls the proper operation of the microcontroller. The operation of the internal oscillator is
monitored by an oscillator-failure detection circuit. EEPROM and RAM content are checked when accessed.
Control registers are parity protected.
Refer to the ZSSC313x Functional Description for a detailed description of failsafe features and methods of error
indication.
2.9.
High Voltage, Reverse Polarity, and Short Circuit Protection
The ZSSC3131 is designed for 5V power supply operation.
The ZSSC3131 and the connected sensor are protected from overvoltage and reverse polarity damage by an
internal supply voltage limiter. The analog output AOUT can be connected (short circuit, overvoltage, and reverse
polarity) with all potentials in the protection range under all potential conditions at the pins VDDE and VSSE.
To guarantee this operation, all external components (see application circuit in section 3) are required. The
protection is not time-limited.
Refer to the ZSSC313x High Voltage Protection Description for a detailed description of protection cases and
conditions.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
17 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
3
Application Circuit Examples
The application circuits contain external components that are needed for overvoltage, reverse polarity, and short
circuit protection.
Note: Also refer to ZSSC313x Technical Note—EMC Design Guidelines and other ZSSC313x application notes
available on the ZSSC3131 product web page (www.zmdi.com/zssc3131) for additional application examples and
board layout recommendations.
Table 3.1
External Components for Application Circuit Examples
Symbol
Component
Min
C1
Capacitor
100
C2
Capacitor
100
Capacitor
4
Capacitor
0
C3
1)
C4, C5
1)
Typ
2)
Max
Unit
470
nF
Remarks
nF
47
160
nF
Value includes the load capacitor C3 and the
capacitance of the connection cable.
10
nF
Recommended to increase EMI immunity.
Value includes the filter capacitor C4 and C5
and the sensor connection line capacitance.
1)
Increasing capacitors C3, C4, and C5 increases EMI immunity.
2)
Dimensioning is only for example and must be adapted to the requirements of the application.
Figure 3.1
Application with On-Chip Diode Temperature Sensor
Out / OWI
GND
C2
100nF
8 VSSE
VDDE 7
+4.5V to +5.5V
C3
47nF
10 VBN
11 VBR_B
12 VBP
C4
Data Sheet
April 10, 2015
C5
VDD 6
ZSSC3131
9 AOUT
Sensor Bridge
VSUPP
n.c. 5
SCL 4
SCL
SDA 3
SDA
Serial Interface
13 VBR_T
VSSA 2
14 n.c.
VDDA 1
C1
100nF
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
18 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
4
Pin Configuration and Package
Table 4.1
Pin Configuration and Definition
Pin No
Pin Name
Description
Remarks
1
VDDA
Positive Analog Supply Voltage
Internal analog supply
2
VSSA
Negative Analog Supply Voltage
Internal analog ground
3
SDA
I²C™ Serial Data
Digital I/O; internal pull-up to VDDA
4
SCL
I²C™ Clock
Digital input; internal pull-up to VDDA
5
N.C.
Not connected
6
VDD
Positive Digital Supply Voltage
Internal digital supply
7
VDDE
Positive External Supply Voltage
High voltage analog supply
8
VSSE
Negative External Supply Voltage
Ground
9
AOUT
Analog Output
TM
and ZACwire Serial Data
High voltage analog I/O
10
VBN
Negative Input from Sensor Bridge
Analog input
11
VBR_B
Negative Sensor Bridge Supply Voltage
Analog I/O
Depending on application circuit, short to VSSA
12
VBP
Positive Input from Sensor Bridge
Analog input
13
VBR_T
Positive Sensor Bridge Supply Voltage
Analog I/O
Depending on application circuit, short to VDDA
14
N.C.
Not connected
The standard package of the ZSSC3131 is an RoHS-compliant SSOP14 “green” package (5.3mm body width)
with a lead pitch of 0.65 mm.
ZSSC3131 SSOP14 Pin Diagram
VSSE
VDDE
AOUT
VDD
ZSSC
3131BPPPP
LLLLLLLL
YYWW
Figure 4.1
VBN
VBR_B
VBP
Data Sheet
April 10, 2015
14
N.C
SCL
SDA
VSSA
1
VBR_T
N.C.
VDDA
B
PPPP
LLLLLLLL
YYWW
Revision
Product and Package Code
Lot Number
Date Code (Year, Work Week)
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
19 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
5
ESD Protection
All pins have an ESD protection of >2000V according to the Human Body Model (HBM). The pins VDDE, VSSE
and AOUT have an additional ESD protection of >4000V (HBM).
ESD protection is tested with devices in SSOP14 packages during product qualification. The ESD test follows the
Human Body Model with 1.5kOhm/100pF based on MIL 883, Method 3015.7.
6
Quality and Reliability
The ZSSC3131 is qualified according to the AEC-Q100 standard, operating temperature grade 0.
A fit rate <5fit (T=55°C, S=60%) is guaranteed. A typical fit rate of the semiconductor technology used is 2.5fit.
7
Customization
For high-volume applications that require an upgraded or downgraded functionality compared to the ZSSC3131,
ZMDI can customize the circuit design by adding or removing certain functional blocks.
Please contact ZMDI for further information.
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
20 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
8
Ordering Information
Product Sales Code
Description
Package
ZSSC3131BA2T
ZSSC3131 SSOP14 – temperature range -40 to +125°C
Tube
ZSSC3131BA2R
ZSSC3131 SSOP14 – temperature range -40 to +125°C
Reel
ZSSC3131BA1B
ZSSC3131 die – temperature range -40 to +125°C
Tested dice on unsawn
wafer
ZSSC3131BA1C
ZSSC3131 die – temperature range -40 to +125°C
Tested dice on frame
ZSSC3131BE2T
ZSSC3131 SSOP14 – temperature range -40 to +150°C
Tube
ZSSC3131BE2R
ZSSC3131 SSOP14 – temperature range -40 to +150°C
Reel
ZSSC3131BE1B
ZSSC3131 die – temperature range -40 to +150°C
Tested dice on unsawn wafer
ZSSC3131BE1C
ZSSC3131 die – temperature range -40 to +150°C
Tested dice on frame
ZSSC313xKITV1.1
ZSSC313x Evaluation Kit, revision 1.1, including Evaluation Board, Kit
ZSSC3131 IC samples, USB cable (software can be downloaded
from the product page www.zmdi.com/zssc3131)
ZSSC313x Mass
Calibration System V1.1
Modular Mass Calibration System (MSC) for ZSSC313x including
Kit
MCS boards, cable, connectors (software can be downloaded from
the product page www.zmdi.com/zssc3131)
Data Sheet
April 10, 2015
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
21 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
9
Related Documents
Note: X_xy refers to the current revision of the document.
Document
File Name
ZSSC3131 Feature Sheet
ZSSC3131_FeatureSheet_Rev_X_xy.pdf
ZSSC313x Functional Description
ZSSC313x_FunctionalDescription_Rev_X_xy.pdf
ZSSC313x Evaluation Kit Description
ZSSC313x_Evaluation_Kit_Description_Rev_X_xy.pdf
ZSSC313x Application Notes—Automotive Sensor
Switch
ZSSC3131_ZSSC3136_AN_Automotive_Sensor_Switch_Rev_X_xy.pdf
ZSSC313x Tech Note—EMC Design Guidelines*
ZSSC313x_TN_EMC_Design_Guidelines_Rev_X_xy.pdf
ZSSC313x Tech Note—High Voltage Protection*
ZSSC313x_Tech_Note_HighVoltageProt_Rev_X_xy.pdf
ZSSC313x Tech Note Die and Package
Dimensions**
ZSSC313x_Tech_Note_Die-Dim_Rev_X_xy.pdf
ZMDI Wafer Dicing Guidelines
ZMDI_Wafer_Dicing_Guidelines_Rev_X_xy.pdf
ZSSC313x Temperature Profile Calculation
Spread Sheet
ZSSC313x_Temperature_Profile_Calculation_Rev_X_xy.xls
ZSSC313x Bandwidth Calculation Spread Sheet**
ZSSC313x_BandwidthCalculation_Rev_X_xy.xls
Visit the ZSSC3131 product page (www.zmdi.com/zssc3131) on ZMDI’s website www.zmdi.com or contact your
nearest sales office for the latest version of these documents.
* Documents marked with an asterisk (*) require a login account for access on the web. For detailed instructions, visit
www.zmdi.com/login-account-setup-procedure.
** Documents marked with a double asterisk (**) are available only on request (see page Error! Bookmark not defined. for
contact information).
10 Glossary
Term
Description
ADC
Analog-to-Digital Converter
AEC
Automotive Electronics Council
AFE
Analog Front-end
AOUT
Analog Output
BAMP
Buffer Amplifier
BR
Bridge Sensor Signal
CM
Command Mode
CMC
Calibration Microcontroller
Data Sheet
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
April 10, 2015
22 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
Term
Description
CMOS
Complementary Metal Oxide Semiconductor
DAC
Digital-to-Analog Converter
DM
Diagnostic Mode
EEPROM
Electrically Erasable Programmable Read-Only Memory
ESD
Electrostatic Device
LDR
Lower Diagnostic Range
MUX
Multiplexer
NOM
Normal Operation Mode
OWI
One-Wire Communication
PGA
Programmable Gain Amplifier
POR
Power-on Reset
RAM
Random-Access Memory
RISC
Reduced Instruction Set Computer
ROM
Read-Only Memory
SSC
Sensor Signal Conditioner or Sensor Short Check depending on context.
T
Temperature Sensor Signal
TS
Temperature Sensor
Data Sheet
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
April 10, 2015
23 of 24
ZSSC3131
Sensor Signal Conditioner for Cost-Optimized Switch Applications
11 Document Revision History
Revision
Date
Description
1.00
October 18, 2011
First released revision.
1.10
January 20, 2012
Full revision.
1.20
September 25, 2012
Minor edits. Update for ZMDI contact information.
1.21
February 15, 2013
Updates to specifications in section1.3.6.
Addition of RS factor (ADC Range Shift) to equation (2).
Minor edits. Update for ZMD America contact information.
1.22
October 21, 2013
Updates for contact information and imagery for cover and headers.
Updates for available part codes.
Updates for related documents.
Minor edits for clarity.
1.23
April 21, 2014
Update to description for kits: software is no longer included. It is downloaded
from the product page www.zmdi.com/zssc3131.
ZSSC313x Evaluation Kit is now version 2.0.
Updates for related documents section.
1.24
April 10, 2015
Update for contact information and related documents section.
Sales and Further Information
www.zmdi.com
[email protected]
Zentrum Mikroelektronik
Dresden AG
Global Headquarters
Grenzstrasse 28
01109 Dresden, Germany
ZMD America, Inc.
1525 McCarthy Blvd., #212
Milpitas, CA 95035-7453
USA
Central Office:
Phone +49.351.8822.306
Fax
+49.351.8822.337
USA Phone 1.855.275.9634
Phone +1.408.883.6310
Fax
+1.408.883.6358
European Technical Support
Phone +49.351.8822.7.772
Fax
+49.351.8822.87.772
DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The
information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer,
licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or
in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any
customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for
any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty,
tort (including negligence), strict liability, or otherwise.
European Sales (Stuttgart)
Phone +49.711.674517.55
Fax
+49.711.674517.87955
Data Sheet
April 10, 2015
Zentrum Mikroelektronik
Dresden AG, Japan Office
2nd Floor, Shinbashi Tokyu Bldg.
4-21-3, Shinbashi, Minato-ku
Tokyo, 105-0004
Japan
ZMD FAR EAST, Ltd.
3F, No. 51, Sec. 2,
Keelung Road
11052 Taipei
Taiwan
Phone +81.3.6895.7410
Fax
+81.3.6895.7301
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
Zentrum Mikroelektronik
Dresden AG, Korea Office
U-space 1 Building
Unit B, 906-1
660, Daewangpangyo-ro
Bundang-gu, Seongnam-si
Gyeonggi-do, 463-400
Korea
Phone +82.31.950.7679
Fax
+82.504.841.3026
© 2015 Zentrum Mikroelektronik Dresden AG — Rev. 1.24
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.
24 of 24