ZMD31015AEF-R datasheet, PDF - EEWORLD Datasheet

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ZMD31015AEF-R: DescriptionAutomotive Analog Circuit; CategoryOther integrated circuit (IC) The signal circuit; File Size297KB，23 Pages; ManufacturerIDT (Integrated Device Technology)

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ZMD31015AEF-R Overview

Automotive Analog Circuit

ZMD31015AEF-R Parametric

Parameter Name	Attribute value
Maker	IDT (Integrated Device Technology)
package instruction	,
Reach Compliance Code	compliant
Base Number Matches	1

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ZMD31150

Fast Automotive Sensor Signal Conditioner

Data Sheet

Rev. 1.04 / November 2009

Data Sheet

Fast Automotive Sensor Signal Conditioner

ZMD31150

Contents

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 (AFE) Characteristics ..................................................................................... 6

1.3.3. Temperature Measurement (refer chapter 0) .............................................................................. 6

1.3.4. Sensor Connection Check ........................................................................................................... 7

1.3.5. AD-Conversion............................................................................................................................. 7

1.3.6. DAC & Analog Output (Pin AOUT) ............................................................................................. 7

1.3.7. System Response........................................................................................................................ 8

1.4. Interface Characteristics & EEPROM ................................................................................................. 8

1.4.1. I

C Interface (refer ZMD31150_FD_Rev_*.pdf for timing details) ............................................... 8

1.4.2. ZACwire™ One Wire Interface (OWI).......................................................................................... 9

1.4.3. EEPROM...................................................................................................................................... 9

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

2.1. Signal Flow........................................................................................................................................ 10

2.2. Application Modes............................................................................................................................. 10

2.3. Analog Front End (AFE).................................................................................................................... 11

2.3.1. Programmable Gain Amplifier (PGA)......................................................................................... 11

2.3.2. Measurement Cycle ................................................................................................................... 12

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

2.4. Temperature Measurement............................................................................................................... 14

2.5. System Control and Conditioning Calculation................................................................................... 15

2.5.1. Operation Modes ....................................................................................................................... 15

2.5.2. Start Up Phase........................................................................................................................... 15

2.5.3. Conditioning Calculation ............................................................................................................ 16

2.6. Analog Output AOUT ........................................................................................................................ 16

2.7. Serial Digital Interface ....................................................................................................................... 16

2.8. Failsafe Features, Watchdog and Error Detection............................................................................ 17

2.9. High Voltage, Reverse Polarity and Short Circuit Protection............................................................ 17

3 Application Circuit Examples.................................................................................................................... 18

4 Pin Configuration, Latch-Up and ESD Protection .................................................................................... 20

4.1. Pin Configuration and Latch-up Conditions ...................................................................................... 20

4.2. ESD-Protection.................................................................................................................................. 20

5 Package.................................................................................................................................................... 21

6 Quality and Reliability............................................................................................................................... 21

7 Customization........................................................................................................................................... 21

8 Additional Documents .............................................................................................................................. 22

9 Glossary ................................................................................................................................................... 22

Document Revision History .................................................................................................................. 23

Data Sheet

Rev. 1.04

November 2009

stored, or used without the prior written consent of the copyright owner. The Information furnished in

this publication is subject to changes without notice.

3 / 23

Data Sheet

Fast Automotive Sensor Signal Conditioner

ZMD31150

List of Figures

Figure 2.1

Figure 2.2

Figure 3.1

Figure 3.2

Figure 3.3

Figure 5.1

Block Diagram of the ZMD31150................................................................................................10

Measurement Cycle ....................................................................................................................13

Bridge in Voltage Mode, External Diode Temperature Sensor...................................................18

Bridge in Voltage Mode, External Thermistor .............................................................................19

Bridge in Current Mode, Temperature Measurement via Bridge TC ..........................................19

ZMD31150 Pin Diagram..............................................................................................................21

List of Tables

Table 1.1

Table 1.2

Table 1.3

Table 1.4

Table 1.5

Table 1.6

Table 1.7

Table 1.8

Table 1.9

Table 1.10

Table 1.11

Table 1.12

Table 2.1

Table 2.2

Table 2.3

Table 3.1

Table 4.1

Table 8.1

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

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

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

Parameters for AFE ......................................................................................................................6

Parameters for Temperature Measurement..................................................................................6

Parameters for Sensor Connection Check ...................................................................................7

Parameters for AD-Conversion.....................................................................................................7

Parameters for DAC & Analog Output ..........................................................................................7

Parameters for System Response ................................................................................................8

Parameters for I

C Interface .........................................................................................................8

Parameters for ZACwire

............................................................................................................9

Parameters for EEPROM..............................................................................................................9

Adjustable gains, resulting sensor signal spans, and common mode ranges ............................11

Analog Zero Point Shift Ranges (XZC) .......................................................................................12

Analog Output resolution versus sample rat ...............................................................................14

Application Circuit Parameters....................................................................................................18

Pin Configuration and Latch-Up Conditions................................................................................20

Additional Documents .................................................................................................................22

Data Sheet

Rev. 1.04

November 2009

stored, or used without the prior written consent of the copyright owner. The Information furnished in

this publication is subject to changes without notice.

4 / 23

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