ZSSC3036 Datasheet

© 2016 Integrated Device Technology, Inc.

3

April 20, 2016

Table of Contents

1

IC Characteristics ..........................................................................................................................................6

1.1.

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

1.2.

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

1.3.

Electrical Parameters .............................................................................................................................7

1.4.

Power Supply Rejection Ratio (RSRR) vs. Frequency...........................................................................9

2

Circuit Description .......................................................................................................................................10

2.1.

Brief Description ...................................................................................................................................10

2.2.

Signal Flow and Block Diagram............................................................................................................10

2.3.

Analog Front End..................................................................................................................................11

2.3.1.

Amplifier .........................................................................................................................................11

2.3.2.

Analog-to-Digital Converter............................................................................................................13

2.3.3.

Temperature Measurement ...........................................................................................................17

2.3.4.

Bridge Supply.................................................................................................................................17

2.4.

Digital Section.......................................................................................................................................17

2.4.1.

Digital Signal Processor (DSP) Core .............................................................................................17

2.4.2.

MTP Memory..................................................................................................................................17

2.4.3.

Clock Generator .............................................................................................................................18

2.4.4.

Power Supervision .........................................................................................................................18

2.4.5.

Interface .........................................................................................................................................18

3

Functional Description.................................................................................................................................19

3.1.

Power Up ..............................................................................................................................................19

3.2.

Measurements ......................................................................................................................................19

3.3.

Operational Modes ...............................................................................................................................19

3.4.

Command Interpretation.......................................................................................................................22

3.4.1.

SPI/I

2C™ Commands ....................................................................................................................22

3.5.

Communication Interface......................................................................................................................25

3.5.1.

Common Functionality ...................................................................................................................25

3.5.2.

SPI .................................................................................................................................................26

3.5.3.

I

2C™...............................................................................................................................................29

3.6.

Memory.................................................................................................................................................30

3.6.1.

Programming Memory ...................................................................................................................30

3.6.2.

Memory Status Commands ...........................................................................................................31

3.6.3.

Memory Contents...........................................................................................................................32

3.7.

Calibration Sequence ...........................................................................................................................38

3.7.1.

Calibration Step 1 – Assigning Unique Identification .....................................................................39

3.7.2.

Calibration Step 2 – Data Collection ..............................................................................................39

3.7.3.

Calibration Step 3 – Coefficient Calculations.................................................................................40

3.8.

The Calibration Math ............................................................................................................................40

3.8.1.

Bridge Signal Compensation .........................................................................................................40

3.8.2.

Temperature Signal Compensation ...............................................................................................43