ZSC31050 datasheet, PDF - EEWORLD Datasheet

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ZSC31050: DescriptionAdvanced Differential Sensor Signal Conditioner; File Size730KB，32 Pages; ManufacturerETC2

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Advanced Differential Sensor Signal Conditioner

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Data Sheet

Rev. 1.12 / July 2013

ZSC31050

Advanced Differential Sensor Signal Conditioner

Multi-Market Sensing Platforms

Precise and Deliberate

ZSC31050

Advanced Differential Sensor Signal Conditioner

Contents

Electrical Characteristics ............................................................................................................................... 6

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

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

1.3. Inherent Characteristics .......................................................................................................................... 8

1.3.1. Cycle Rate versus Analog-to-Digital Conversion (ADC) Resolution ................................................ 9

1.3.2. PWM Frequency .............................................................................................................................. 9

1.4. Electrical Parameters ........................................................................................................................... 10

1.4.1. Supply / Regulation ........................................................................................................................ 10

1.4.2. Analog Front End ........................................................................................................................... 10

1.4.3. DAC and Analog Output (OUT Pin) ............................................................................................... 10

1.4.4. PWM Output (OUT Pin, IO1 Pin) ................................................................................................... 10

1.4.5. Temperature Sensors (IR_TEMP Pin) ........................................................................................... 11

1.4.6. Digital Outputs (IO1, IO2, OUT Pins in Digital Mode) .................................................................... 11

1.4.7. System Response .......................................................................................................................... 11

1.5. Interface Characteristics ....................................................................................................................... 12

1.5.1. Multiport Serial Interfaces (I C™, SPI) .......................................................................................... 12

1.5.2. One-Wire Serial Interface (ZACwire™) ......................................................................................... 12

Circuit Description ....................................................................................................................................... 13

2.1. Signal Flow ........................................................................................................................................... 13

2.2. Application Modes ................................................................................................................................ 14

2.3. Analog Front-End (AFE) ....................................................................................................................... 15

2.3.1. Programmable Gain Amplifier (PGA) ............................................................................................. 15

2.3.2. Extended Zero Point Compensation (XZC) ................................................................................... 16

2.3.3. Measurement Cycle Performed by Multiplexer .............................................................................. 17

2.3.4. Analog-to-Digital Converter ............................................................................................................ 18

2.4. System Control ..................................................................................................................................... 19

2.5. Output Stage......................................................................................................................................... 20

2.5.1. Analog Output ................................................................................................................................ 21

2.5.2. Comparator Module (ALARM Output) ........................................................................................... 22

2.5.3. Serial Digital Interface .................................................................................................................... 22

2.6. Voltage Regulator ................................................................................................................................. 23

2.7. Watchdog and Error Detection ............................................................................................................. 23

Application Circuit Examples ....................................................................................................................... 24

ESD/Latch-Up-Protection ............................................................................................................................ 25

Pin Configuration and Package ................................................................................................................... 26

Reliability ..................................................................................................................................................... 27

Customization .............................................................................................................................................. 27

Ordering Information ................................................................................................................................... 28

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

Data Sheet

July 7, 2013

4 of 31

ZSC31050

Advanced Differential Sensor Signal Conditioner

9 Related Documents ..................................................................................................................................... 29

10 Glossary ...................................................................................................................................................... 29

11 Document Revision History ......................................................................................................................... 30

List of Figures

Figure 2.1

Figure 2.2.

Figure 3.1

Figure 3.2

Figure 3.3

Figure 3.4

Figure 3.5

Figure 5.1.

Block Diagram of the ZSC31050 ................................................................................................... 13

Measurement Cycle ZSC31050 ..................................................................................................... 17

Application Example 1 ................................................................................................................... 24

Application Example 2 ................................................................................................................... 24

Application Example 3 ................................................................................................................... 24

Application Example 4 ................................................................................................................... 24

Application Example 5 ................................................................................................................... 25

Pin Configuration ........................................................................................................................... 27

List of Tables

Table 1.1

Table 1.2

Table 1.3

Table 1.4

Table 1.5

Table 1.6

Table 1.7.

Table 2.1

Table 2.2

Table 2.3

Table 2.4.

Table 2.5.

Table 5.1.

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

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

Inherent Characteristics ................................................................................................................... 8

Cycle Rate versus ADC Resolution ................................................................................................. 9

PWM Frequency .............................................................................................................................. 9

Electrical Parameters ..................................................................................................................... 10

Interface Characteristics ................................................................................................................ 12

Adjustable Gains, Resulting Sensor Signal Spans, and Common Mode Ranges ........................ 15

Extended Zero Point Compensation (XZC) Range ....................................................................... 16

Output Resolution versus Sample Rate ........................................................................................ 19

Output Configurations Overview .................................................................................................... 20

Analog Output Configuration ......................................................................................................... 21

Pin Configuration ........................................................................................................................... 26

Data Sheet

July 7, 2013

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

5 of 31

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Description	Advanced Differential Sensor Signal Conditioner	Advanced Differential Sensor Signal Conditioner	Advanced Differential Sensor Signal Conditioner	Advanced Differential Sensor Signal Conditioner	Advanced Differential Sensor Signal Conditioner

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