ZSC31010

Data Sheet

May 25, 2011

© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 2.8

All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without

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

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Contents

1

Electrical Characteristics ......................................................................................................8

1.1. Absolute Maximum Ratings ............................................................................................8

1.2. Recommended Operating Conditions .............................................................................8

1.3. Electrical Parameters ......................................................................................................9

1.3.1. Supply / Regulation Characteristics ...........................................................................9

1.3.2. Analog Front-End (AFE) Characteristics....................................................................9

1.3.3. EEPROM Parameters................................................................................................9

1.3.4. A/D Converter Characteristics .................................................................................10

1.3.5. Analog Output (DAC and Buffer) Characteristics.....................................................10

1.3.6. ZACwire™ Serial Interface ......................................................................................10

1.3.7. System Response Characteristics ...........................................................................11

1.4. Analog Inputs versus Output Resolution .......................................................................11

2

Circuit Description ..............................................................................................................14

2.1. Signal Flow and Block Diagram ....................................................................................14

2.2. Analog Front End ..........................................................................................................15

2.2.1. Bandgap/PTAT and PTAT Amplifier ........................................................................15

2.2.2. Bridge Supply ..........................................................................................................15

2.2.3. PREAMP Block........................................................................................................15

2.2.4. Analog-to-Digital Converter (ADC)...........................................................................15

2.3. Digital Signal Processor ................................................................................................16

2.3.1. EEPROM .................................................................................................................17

2.3.2. One-Wire Interface - ZACwire™..............................................................................17

2.4. Output Stage.................................................................................................................18

2.4.1. Digital to Analog Converter (Output DAC) ...............................................................18

2.4.2. Output Buffer ...........................................................................................................18

2.4.3. Voltage Reference Block .........................................................................................18

2.5. Clock Generator / Power-On Reset (CLKPOR) ............................................................19

2.5.1. Trimming the Oscillator............................................................................................20

3

Functional Description ........................................................................................................21

3.1. General Working Mode .................................................................................................21