Data Sheet
Rev. 2.40 / December 2014
ZSC31150
Fast Automotive Sensor Signal Conditioner
Multi-Market Sensing Platforms
Precise and Deliberate
ZSC31150
Fast Automotive Sensor Signal Conditioner
Brief Description
The ZSC31150 is a CMOS integrated circuit for
highly accurate amplification and sensor-specific
correction of bridge sensor signals. Digital com-
pensation of sensor offset, sensitivity, temperature
drift, and non-linearity is accomplished via an inter-
nal 16-bit RISC microcontroller running a correction
algorithm, with calibration coefficients stored in an
EEPROM.
The ZSC31150 is adjustable to nearly all bridge sen-
sor types. Measured values are provided at the
analog voltage output or at the digital ZACwire™
and I²C™* interface. The digital interface can be
used for a simple PC-controlled calibration proce-
dure in order to program a set of calibration coeffi-
cients into an on-chip EEPROM. A specific sensor
and a ZSC31150 can be mated digitally: fast,
precise, and without the cost overhead associated
with trimming by external devices or a laser.
Benefits
No external trimming components required
Only a few external protection devices needed
PC-controlled configuration and single pass
calibration via I²C™ or ZACwire™ interface:
simple, cost efficient, quick, and precise
End-of-line calibration via I²C™ or ZACwire™
interface
High accuracy (0.25% FSO @ -25 to 85°C; 0.5%
FSO @ -40 to 125°C)
Excellent EMC/ESD robustness and AEC-Q100
qualification
Available Support
Evaluation Kits
Application Notes
Mass Calibration System
Features
Physical Characteristics
Digital compensation of sensor offset, sensitivity,
temperature drift, and non-linearity
Adjustable to nearly all bridge sensor types
Analog gain of up to 420
Output options: ratiometric analog voltage output
(5% to 95% maximum, 12.4-bit resolution) or
ZACwire™ (digital one-wire-interface)
Temperature compensation: internal or external
diode, bridge resistance, thermistor
Sensor biasing by voltage or constant current
Sample rate: up to 7.8kHz
High voltage protection up to 33V
Supply current: max. 5.5mA
Reverse polarity and short-circuit protection
Wide operation temperature depending on part
number: up to -40 to +150°C
Traceability by user-defined EEPROM entries
Safety and diagnostic functions
Supply voltage: 4.5 to 5.5 V
Operation temperature: -40°C to 125°C
(-40°C to +150°C extended temperature range)
Available as DFN14 (5mm x 4mm; wettable
flanks), SSOP14, and die
ZSC31150 Application Circuit
Out / OWI
GND
C2
100nF
8
VSSE
C3
47nF
VDDE
7
+4.5V to +5.5V
V
SUPP
Sensor Bridge
9
AOUT
10
VBN
11
VBR_B
12
VBP
13
VBR_T
14
IRTEMP
VDD
6
ZSC31150
n.c.
5
SCL
4
SDA
3
VSSA
2
VDDA
1
C1
100nF
SCL
Serial Interface
SDA
C4
C5
Temperature Sensor
* I²C™ is a trademark of NXP.
For more information, contact ZMDI via
SSC@zmdi.com.
© 2014 Zentrum Mikroelektronik Dresden AG — Rev. 2.40— December 3, 2014
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.
ZSC31150
Fast Automotive Sensor Signal Conditioner
ZSC31150 Block Diagram
RAM
MUX
EEPROM
ZACwire™
I
2
C™
Digital
Data I/O
Analog
Out
PGA
ADC
CMC
DAC
BAMP
TS
Analog Block
Digital Block
ROM
ZSC31150
Ordering Information
Sales Code
ZSC31150GE
Description
ZSC31150 Die — Temperature range: -40°C to +150°C
Package
Unsawn on Wafer: add “B” to sales code
Sawn on Wafer Frame: add “C”
Waffle Pack: add “D”
Tape & Reel
Tape & Reel
Tube: add “-T” to sales code
Tape & Reel: add “-R”
ZSC31150GEG2-R
ZSC31150GAG2-R
ZSC31150GEG1
ZSC31150GLG1
ZSC31150 DFN14 (5mmx4mm; wettable flanks) —Temperature
range: -40°C to 150°C
ZSC31150 DFN14 (5mmx4mm; wettable flanks) —Temperature
range: -40°C to 125°C
ZSC31150 SSOP14—Temperature range: -40°C to +150°C
ZSC31150 SSOP14—Temperature range: -40°C to +150°C
(Long life: 5000h @150°C)
ZSC31150 SSOP14—Temperature range: -40°C to +125°C
ZSC31150GAG1
ZSC31150KIT
Evaluation Kit V1.0
ZSC31150 Mass
Calibration System V1.1
ZSC31150 SSC Evaluation Kit: three interconnecting boards, five ZSC31150 SSOP14 samples,
USB cable (software can be downloaded from product page at
www.zmdi.com/zsc31150)
Modular Mass Calibration System (MSC) for ZSC31150: MCS boards, cable, connectors
(software can be downloaded from product page)
Sales and Further Information
Zentrum Mikroelektronik
Dresden AG
Global Headquarters
Grenzstrasse 28
01109 Dresden, Germany
Central Office:
Phone +49.351.8822.306
Fax
+49.351.8822.337
ZMD America, Inc.
1525 McCarthy Blvd., #212
Milpitas, CA 95035-7453
USA
USA Phone +855.275.9634
Phone +408.883.6310
Fax
+408.883.6358
www.zmdi.com
Zentrum Mikroelektronik
Dresden AG, Japan Office
2nd Floor, Shinbashi Tokyu Bldg.
4-21-3, Shinbashi, Minato-ku
Tokyo, 105-0004
Japan
Phone +81.3.6895.7410
Fax
+81.3.6895.7301
ZMD FAR EAST, Ltd.
3F, No. 51, Sec. 2,
Keelung Road
11052 Taipei
Taiwan
SSC@zmdi.com
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
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
European Technical Support
Phone +49.351.8822.7.772
Fax
+49.351.8822.87.772
European Sales
(Stuttgart)
Phone +49.711.674517.55
Fax
+49.711.674517.87955
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.
© 2014 Zentrum Mikroelektronik Dresden AG — Rev. 2.40— December 3, 2014
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.
ZSC31150
Fast Automotive Sensor Signal Conditioner
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
2)
1.3.3. Temperature Measurement .......................................................................................................... 8
1.3.4. Analog-to-Digital Conversion (ADC) ............................................................................................... 8
1.3.5. Sensor Connection Check .............................................................................................................. 8
1.3.6. Digital-to-Analog Conversion (DAC) and Analog Output (AOUT Pin) ............................................ 8
1.3.7. System Response ........................................................................................................................... 9
1.4. Interface Characteristics and EEPROM .............................................................................................. 10
TM
1)
1.4.1. I²C Interface ............................................................................................................................ 10
1.4.2. ZACwire™ One Wire Interface (OWI) ........................................................................................... 10
1.4.3. EEPROM ....................................................................................................................................... 10
Circuit Description ...................................................................................................................................... 11
2.1. Signal Flow .......................................................................................................................................... 11
2.2. Application Modes ............................................................................................................................... 12
2.3. Analog Front End (AFE) ...................................................................................................................... 13
2.3.1. Programmable Gain Amplifier (PGA) ............................................................................................ 13
2.3.2. Offset Compensation .................................................................................................................... 14
2.3.3. Measurement Cycle ...................................................................................................................... 14
2.3.4. Analog-to-Digital Converter ........................................................................................................... 15
2.4. Temperature Measurement ................................................................................................................. 17
2.5. System Control and Conditioning Calculation ..................................................................................... 17
2.5.1. Operation Modes........................................................................................................................... 17
2.5.2. Start Up Phase .............................................................................................................................. 18
2.5.3. Conditioning Calculation ............................................................................................................... 18
2.6. Analog Output AOUT ........................................................................................................................... 19
2.7. Serial Digital Interface ......................................................................................................................... 19
2.8. Failsafe Features, Watchdog and Error Detection .............................................................................. 19
2.9. High Voltage, Reverse Polarity, and Short Circuit Protection ............................................................. 20
Application Circuit Examples ...................................................................................................................... 21
Pin Configuration, Latch-Up and ESD Protection ...................................................................................... 23
4.1. Pin Configuration and Latch-up Conditions ......................................................................................... 23
4.2. ESD Protection .................................................................................................................................... 24
Package...................................................................................................................................................... 24
5.1. SSOP14 Package ................................................................................................................................ 24
5.2. DFN14 Package .................................................................................................................................. 25
2
3
4
5
Data Sheet
December 3, 2014
© 2014 Zentrum Mikroelektronik Dresden AG — Rev. 2.40
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 29
ZSC31150
Fast Automotive Sensor Signal Conditioner
6
7
8
9
10
11
Quality and Reliability ................................................................................................................................. 26
Customization ............................................................................................................................................. 26
Ordering Information .................................................................................................................................. 26
Related Documents and Tools ................................................................................................................... 27
Glossary ..................................................................................................................................................... 27
Document Revision History ........................................................................................................................ 28
List of Figures
Figure 2.1
Figure 2.2
Figure 3.1
Figure 3.2
Figure 3.3
Figure 5.1
Figure 5.2
Block Diagram of the ZSC31150 .................................................................................................. 11
Measurement Cycle ...................................................................................................................... 15
Bridge in Voltage Mode, External Diode Temperature Sensor .................................................... 21
Bridge in Voltage Mode, External Thermistor ............................................................................... 22
Bridge in Current Mode, Temperature Measurement via Bridge TC ............................................ 22
SSOP14 Pin Diagram ................................................................................................................... 24
Outline Drawing for DFN14 Package with Wettable Flanks ......................................................... 25
List of Tables
Table 1.1
Table 1.2
Table 1.3
Table 1.4
Table 2.1
Table 2.2
Table 2.3
Table 3.1
Table 4.1
Absolute Maximum Ratings ............................................................................................................ 6
Operating Conditions ...................................................................................................................... 6
Electrical Parameters ...................................................................................................................... 7
Interface and EEPROM Characteristics ....................................................................................... 10
Adjustable Gains, Resulting Sensor Signal Spans, and Common Mode Ranges ....................... 13
Analog Zero Point Shift Ranges (XZC) ......................................................................................... 14
Analog Output Resolution versus Sample Rate ........................................................................... 16
Application Circuit Parameters ..................................................................................................... 21
Pin Configuration and Latch-Up Conditions ................................................................................. 23
Data Sheet
December 3, 2014
© 2014 Zentrum Mikroelektronik Dresden AG — Rev. 2.40
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.
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