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Data Sheet

Rev. 1.08 / August 2011

ZSC31150

Fast Automotive Sensor Signal Conditioner

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

compensation of sensor offset, sensitivity,

temperature

drift,

and

non-linearity

accomplished via an internal 16-bit RISC

microcontroller running a correction algorithm, with

calibration coefficients stored in an EEPROM.

The ZSC31150 is adjustable to nearly all bridge

sensor 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

procedure, in order to program a set of calibration

coefficients into an on-chip EEPROM. Thus, a

specific sensor and a ZSC31150 are 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 One-Shot

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)



The ZSC31150 is optimized for automotive

environments by its special protection circuitry

and excellent electromagnetic compatibility

Available Support



Evaluation Kits



Application Notes



Mass calibration setup

Features



Digital compensation of sensor offset,



Physical Characteristics



Supply voltage 4.5 to 5.5 V



Operation temperature: -40°C to 125°C



sensitivity, temperature drift, and non-linearity

Adjustable to nearly all bridge sensor types,

analog gain of 420, overall gain up to 2000

Output options: ratiometric analog voltage

output (5 - 95% in 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 7.8 kHz

High voltage protection up to 33 V

Supply current: max. 5.5mA

Reverse polarity and short circuit protection

Wide operation temperature up to -40…+150°C

Traceability by user-defined EEPROM entries

Several safety and diagnostic functions

(-40°C to +150°C derated, depending on

product version)



Available in SSOP14 or as die

ZSC31150 Application Circuit

VCC

Sensor

Module

ZSC

31150

OUT

GND

The information furnished in this publication is subject to changes without notice.

ZSC31150

Fast Automotive Sensor Signal Conditioner

ZSC31150 Block Diagram

RAM

EEPROM

ZACwire

Digital

Data I/O

Analog

Out

MUX

PGA

ADC

CMC

DAC

BAMP

Analog Block

Digital Block

ROM

ZSC31150

Ordering Information

Product Sales Code

ZSC31150KIT

Evaluation Kit V1.0

ZSC31150 Mass

Calibration System V1.1

Description

Modular evaluation and development boards for

ZSC31150

Modular Mass Calibration System (MSC) for

ZSC31150

Package

KIT boards, IC samples, USB cable,

DVD with software and documentation

MCS boards, cable, connectors,

DVD with software and documentation

Sales and Further Information

Zentrum Mikroelektronik

Dresden AG

Grenzstrasse 28

01109 Dresden

Germany

Phone

Fax

+49 (0)351.8822.7.772

+49(0)351.8822.87.772

www.zmdi.com

Zentrum Mikroelektronik

Dresden AG, Japan Office

SSC@zmdi.com

ZMD Far East, Ltd.

ZMD America, Inc.

8413 Excelsior Drive

Suite 200

Madison, WI 53717

USA

Phone

Fax

+01 (608) 829-1987

+01 (631) 549-2882

3F, No. 51, Sec. 2,

2nd Floor, Shinbashi Tokyu Bldg. Keelung Road

11052 Taipei

4-21-3, Shinbashi, Minato-ku

Taiwan

Tokyo, 105-0004

Japan

Phone

Fax

+81.3.6895.7410

+81.3.6895.7301

Phone

Fax

+886.2.2377.8189

+886.2.2377.8199

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.

The information furnished in this publication is subject to changes without notice.

ZSC31150

Fast Automotive Sensor Signal Conditioner

Contents

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 (refer chapter 2.4) ...............................................................................7

1.3.4. AD-Conversion.................................................................................................................................7

1.3.5. Sensor Connection Check ...............................................................................................................8

1.3.6. DAC & Analog Output (Pin AOUT) .................................................................................................8

1.3.7. System Response ............................................................................................................................8

1.4. Interface Characteristics & EEPROM.....................................................................................................9

1.4.1. I²C

Interface (refer 'ZSC31150 Functional Description' for timing details) ...................................9

1.4.2. ZACwire™ One Wire Interface (OWI)..............................................................................................9

1.4.3. EEPROM..........................................................................................................................................9

2 Circuit Description .......................................................................................................................................10

2.1. Signal Flow ...........................................................................................................................................10

2.2. Application Modes ................................................................................................................................11

2.3. Analog Front End (AFE) .......................................................................................................................11

2.3.1. Programmable Gain Amplifier (PGA).............................................................................................11

2.3.2. Offset Compensation .....................................................................................................................12

2.3.3. Measurement Cycle .......................................................................................................................12

2.3.4. Analog-to-Digital Converter............................................................................................................13

2.4. Temperature Measurement ..................................................................................................................14

2.5. System Control and Conditioning Calculation ......................................................................................15

2.5.1. Operation Modes............................................................................................................................15

2.5.2. Start Up Phase...............................................................................................................................15

2.5.3. Conditioning Calculation ................................................................................................................15

2.6. Analog Output AOUT............................................................................................................................16

2.7. Serial Digital Interface ..........................................................................................................................16

2.8. Failsafe Features, Watchdog and Error Detection ...............................................................................16

2.9. High Voltage, Reverse Polarity and Short Circuit Protection ...............................................................17

3 Application Circuit Examples.......................................................................................................................18

4 Pin Configuration, Latch-Up and ESD Protection .......................................................................................20

4.1. Pin Configuration and Latch-up Conditions..........................................................................................20

4.2. ESD-Protection .....................................................................................................................................20

5 Package.......................................................................................................................................................21

6 Quality and Reliability..................................................................................................................................21

7 Customization..............................................................................................................................................21

8 Ordering Information ...................................................................................................................................22

9 Additional Documents .................................................................................................................................22

10 Glossary ......................................................................................................................................................23

11 Document Revision History .........................................................................................................................24

Data Sheet

August 16, 2011

the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without

notice.

4 of 24

ZSC31150

Fast Automotive Sensor Signal Conditioner

List of Figures

Figure 2.1

Figure 2.2:

Figure 3.1:

Figure 3.2:

Figure 3.3:

Figure 5.1:

Block Diagram of the ZSC31150 ...................................................................................................10

Measurement Cycle.......................................................................................................................13

Bridge in Voltage Mode, External Diode Temperature Sensor .....................................................18

Bridge in Voltage Mode, External Thermistor................................................................................19

Bridge in Current Mode, Temperature Measurement via Bridge TC.............................................19

ZSC31150 Pin Diagram.................................................................................................................21

List of Tables

Table 1.1

Table 1.2

Table 2.1

Table 2.2

Table 2.3:

Table 3.1:

Table 4.1:

Absolute Maximum Ratings .............................................................................................................6

Operating Conditions .......................................................................................................................6

Adjustable Gains, Resulting Sensor Signal Spans and Common Mode Ranges .........................11

Analog Zero Point Shift Ranges (XZC)..........................................................................................12

Analog Output Resolution Versus Sample Rate............................................................................14

Application Circuit Parameters ......................................................................................................18

Pin Configuration and Latch-Up Conditions ..................................................................................20

Data Sheet

August 16, 2011

the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without

notice.

5 of 24

型号	ZSC31150FLG1-R	ZSC31150FEG1-R	ZSC31150FLG1-T	ZSC31150FEG1-T	ZSC31150FAG1-R
描述	data converter systems sensor signal conditoner	data converter systems sensor signal conditoner	data converter systems sensor signal conditoner	data converter systems sensor signal conditoner	data converter systems sensor signal conditoner
Manufacture	ZMDI	ZMDI	ZMDI	ZMDI	ZMDI
产品种类 Product Category	Data Converter Systems	Data Converter Systems	Data Converter Systems	Data Converter Systems	Data Converter Systems
RoHS	Yes	Yes	Yes	Yes	Yes
最大工作温度 Maximum Operating Temperature	+ 150 C	+ 150 C	+ 150 C	+ 150 C	+ 125 C
最小工作温度 Minimum Operating Temperature	- 40 C	- 40 C	- 40 C	- 40 C	- 40 C
安装风格 Mounting Style	SMD/SMT	SMD/SMT	SMD/SMT	SMD/SMT	SMD/SMT
封装 / 箱体 Package / Case	SSOP-14	SSOP-14	SSOP-14	SSOP-14	SSOP-14
系列 Packaging	Reel	Reel	Tube	Tube	Reel
接口类型 Interface Type	I2C	I2C	I2C	I2C	I2C
电源电压-最大 Supply Voltage - Max	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Supply Voltage - Mi	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V