ZSSC3281 datasheet(2/102 Pages) RENESAS

2 / 102 page

ZSSC3281 Datasheet

R33DS0020ED0100 Rev. 1.0

Jun.13.22

Page 2

Contents

Overview................................................................................................................................................... 7

1.1

Block Diagram .................................................................................................................................. 7

1.2

Ordering Information......................................................................................................................... 7

1.3

Pin Configuration.............................................................................................................................. 8

1.4

Pin Descriptions ............................................................................................................................... 9

Specifications......................................................................................................................................... 10

2.1

Absolute Maximum Ratings ............................................................................................................ 10

2.2

Thermal Information ....................................................................................................................... 11

2.3

Recommended Operating Conditions ............................................................................................. 11

2.4

Electrical Specifications .................................................................................................................. 11

Basic System Configuration.................................................................................................................. 16

3.1

System Modes/System Start........................................................................................................... 16

3.2

Power Supply ................................................................................................................................. 17

3.2.1.

Power Supply Modes........................................................................................................ 17

3.2.2.

Direct VDD Supply............................................................................................................ 18

3.2.3.

Pre-Regulated High Voltage Supply.................................................................................. 18

3.2.4.

Negative Voltage Supply for AOUT ................................................................................... 19

3.3

System Clocks................................................................................................................................ 19

3.3.1.

Internal Oscillators and Specifications............................................................................... 19

3.3.2.

Main System Clock........................................................................................................... 19

3.3.3.

Always-On Clock .............................................................................................................. 20

3.4

System Reset ................................................................................................................................. 20

Analog Front End (AFE)......................................................................................................................... 21

4.1

AFE Signal Path............................................................................................................................. 21

4.2

Bridge Sensor Inputs ...................................................................................................................... 22

4.2.1.

Resistive Bridge Sensors.................................................................................................. 22

4.2.2.

Thermocouple and Thermopile Sensors............................................................................ 24

4.3

Auxiliary Temperature Sensor Inputs .............................................................................................. 25

4.3.1.

Internal PTAT Temperature Sensor .................................................................................. 25

4.3.2.

External Temperature Sensors ......................................................................................... 25

4.4

Programmable Gain Amplifier (PGA) .............................................................................................. 27

4.5

Analog-to-Digital Converter (ADC) .................................................................................................. 29

4.6

AFE Sequencer .............................................................................................................................. 30

4.6.1.

Bridge Sensor Measurement Configuration....................................................................... 31

4.6.2.

Auxiliary Measurement Configuration................................................................................ 32

4.6.3.

Deterministic Input Step Response with SM+/SM- Configuration....................................... 32

4.6.4.

Deterministic Input Step Response with SM+/AZ Configuration......................................... 33

4.6.5.

Accelerated Bridge Measurements with Sparsely Inserted Auxiliary Measurements .......... 34

4.7

AFE Dual Speed Mode................................................................................................................... 34

Sensor Signal Conditioning................................................................................................................... 37

5.1

Signal Conditioning Data Path ........................................................................................................ 37

5.2

Basic SSC Math options ................................................................................................................. 38

5.2.1.

Main Sensor Signal Correction ......................................................................................... 38

ZSSC3281 Datasheet(PDF) 2 Page - Renesas Technology Corp

ZSSC3281 Datasheet(HTML) 2 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL