ZSC31150FEC-R datasheet, PDF - EEWORLD Datasheet

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ZSC31150FEC-R: DescriptionFast Automotive Sensor Signal Conditioner; File Size668KB，25 Pages; ManufacturerETC2

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ZSC31150FEC-R Overview

Fast Automotive Sensor Signal Conditioner

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Data Sheet

Rev. 1.08 / August 2011

ZSC31150

Fast Automotive Sensor Signal Conditioner

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

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