ZSSC3154 Datasheet
Contents
1
Electrical Characteristics.................................................................................................................................. 5
1.1
Absolute Maximum Ratings....................................................................................................................... 5
Operating Conditions................................................................................................................................. 5
Electrical Parameters ................................................................................................................................ 6
1.2
1.3
1.3.1
1.3.2
Supply Current and System Operation Conditions............................................................................. 6
Analog Front-End Characteristics....................................................................................................... 6
Temperature Measurement ................................................................................................................ 7
Sensor Diagnostic Tasks .................................................................................................................... 7
A/D Conversion................................................................................................................................... 8
D/A Conversion and Analog Outputs (Pins AOUT1 and AOUT2) ...................................................... 8
System Response............................................................................................................................... 9
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.4
1.4.1
1.4.2
1.4.3
Interface Characteristics and EEPROM.................................................................................................. 10
I2CTM Interface .................................................................................................................................. 10
ZACwireTM One Wire Interface.......................................................................................................... 10
EEPROM........................................................................................................................................... 10
2
Circuit Description .......................................................................................................................................... 11
2.1
Signal Flow .............................................................................................................................................. 11
Application Modes ................................................................................................................................... 12
System Control ........................................................................................................................................ 13
2.2
2.3
2.3.1
2.3.2
2.4
2.4.1
2.4.2
2.4.3
Main System Tasks........................................................................................................................... 13
General Working Modes ................................................................................................................... 13
Normal Operation Mode .......................................................................................................................... 13
Startup Phase ................................................................................................................................... 13
Measurement Cycle .......................................................................................................................... 14
Conditioning Calculation ................................................................................................................... 14
2.5
2.6
2.7
2.8
Bridge Sensor Measurement................................................................................................................... 15
Temperature Measurement..................................................................................................................... 15
Half-Bridge Sensor Measurement........................................................................................................... 15
Analog Front End..................................................................................................................................... 16
2.8.1
2.8.2
2.8.3
2.9
2.9.1
2.9.2
2.9.3
Programmable Gain Amplifier........................................................................................................... 16
Offset Compensation ........................................................................................................................ 17
Analog-to-Digital Converter............................................................................................................... 18
Signal Outputs ......................................................................................................................................... 18
Analog Output ................................................................................................................................... 18
Sequential Analog Output................................................................................................................. 19
Digital Output .................................................................................................................................... 19
2.10 Serial Digital Interfaces............................................................................................................................ 19
2.11 Failsafe Features..................................................................................................................................... 20
© 2016 Integrated Device Technology, Inc.
3
January 22, 2016