ZSSC3131AA2T datasheet, PDF - EEWORLD Datasheet

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ZSSC3131AA2T: DescriptionSensor Interface Sensor Signal Conditoner; Categorysemiconductor Analog mixed-signal IC; File Size687KB，24 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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ZSSC3131AA2T Overview

Sensor Interface Sensor Signal Conditoner

ZSSC3131AA2T Parametric

Parameter Name	Attribute value
Product Category	Sensor Interface
Manufacturer	IDT (Integrated Device Technology, Inc.)
RoHS	Details
Interface Type	I2C
Supply Voltage - Max	5.5 V
Supply Voltage - Min	4.5 V
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Mounting Style	SMD/SMT
Package / Case	TSSOP-14
Packaging	Tube
Moisture Sensitive	Yes
Factory Pack Quantity	77
Unit Weight	0.004949 oz

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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

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 ............................................................................................................. 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

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

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

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

Data Sheet

April 10, 2015

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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