ZSSC3154 Datasheet

© 2016 Integrated Device Technology, Inc.

3

January 22, 2016

Contents

1

Electrical Characteristics .................................................................................................................................. 5

1.1

Absolute Maximum Ratings....................................................................................................................... 5

1.2

Operating Conditions ................................................................................................................................. 5

1.3

Electrical Parameters ................................................................................................................................ 6

1.3.1

Supply Current and System Operation Conditions ............................................................................. 6

1.3.2

Analog Front-End Characteristics ....................................................................................................... 6

1.3.3

Temperature Measurement ................................................................................................................ 7

1.3.4

Sensor Diagnostic Tasks .................................................................................................................... 7

1.3.5

A/D Conversion ................................................................................................................................... 8

1.3.6

D/A Conversion and Analog Outputs (Pins AOUT1 and AOUT2) ...................................................... 8

1.3.7

System Response ............................................................................................................................... 9

1.4

Interface Characteristics and EEPROM .................................................................................................. 10

1.4.1

I2C

TM Interface .................................................................................................................................. 10

1.4.2

ZACwire

TM One Wire Interface.......................................................................................................... 10

1.4.3

EEPROM........................................................................................................................................... 10

2

Circuit Description .......................................................................................................................................... 11

2.1

Signal Flow .............................................................................................................................................. 11

2.2

Application Modes ................................................................................................................................... 12

2.3

System Control ........................................................................................................................................ 13

2.3.1

Main System Tasks........................................................................................................................... 13

2.3.2

General Working Modes ................................................................................................................... 13

2.4

Normal Operation Mode .......................................................................................................................... 13

2.4.1

Startup Phase ................................................................................................................................... 13

2.4.2

Measurement Cycle .......................................................................................................................... 14

2.4.3

Conditioning Calculation ................................................................................................................... 14

2.5

Bridge Sensor Measurement................................................................................................................... 15

2.6

Temperature Measurement ..................................................................................................................... 15

2.7

Half-Bridge Sensor Measurement ........................................................................................................... 15

2.8

Analog Front End..................................................................................................................................... 16

2.8.1

Programmable Gain Amplifier........................................................................................................... 16

2.8.2

Offset Compensation ........................................................................................................................ 17

2.8.3

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

2.9

Signal Outputs ......................................................................................................................................... 18

2.9.1

Analog Output ................................................................................................................................... 18

2.9.2

Sequential Analog Output ................................................................................................................. 19

2.9.3

Digital Output .................................................................................................................................... 19

2.10

Serial Digital Interfaces............................................................................................................................ 19

2.11

Failsafe Features ..................................................................................................................................... 20