EVB7122-433-FSK-C【PDF 2/24 页】BOARD EVAL FOR TH7122 433MHZ

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EVB7122

27 to 930MHz Transceiver

Evaluation Board Description

Document Content

1

Theory of Operation ...................................................................................................3

1.1

1.2

1.3

1.4

1.5

General ............................................................................................................................. 3

Technical Data Overview.................................................................................................. 3

Note on ASK Operation .................................................................................................... 3

Block Diagram .................................................................................................................. 4

User Mode Features ......................................................................................................... 4

2

Description of User Modes........................................................................................5

2.1

2.1.1

2.1.2

2.1.3

2.1.4

2.2

2.2.1

Stand-alone User Mode Operation ................................................................................... 5

Frequency Selection .................................................................................................................... 5

Operation Mode ........................................................................................................................... 5

Modulation Type .......................................................................................................................... 6

LNA Gain Mode ........................................................................................................................... 6

Programmable User Mode Operation............................................................................... 6

Serial Control Interface Description ............................................................................................. 6

3

Register Description ..................................................................................................7

3.1

3.1.1

3.1.2

3.1.3

3.1.4

3.1.5

Register Overview ............................................................................................................ 8

Default Register Settings for FS0, FS1........................................................................................ 8

A – word ....................................................................................................................................... 9

B – word ..................................................................................................................................... 10

C – word..................................................................................................................................... 11

D – word..................................................................................................................................... 12

4

Application Circuits .................................................................................................13

4.1

4.1.1

4.1.2

4.2

4.2.1

4.2.2

4.3

4.3.1

4.3.2

FSK Application Circuit Programmable User Mode (internal AFC option)...................... 13

Board Component Values for FSK Reception ........................................................................... 14

Component Arrangement Top Side for FSK Reception ............................................................ 15

ASK Application Circuit Programmable User Mode (normal data slicer option) ............. 16

Board Component Values for ASK (normal data slicer option) ................................................. 17

Component Arrangement Top Side for ASK Reception (normal data slicer option) ................. 18

ASK Application Circuit with Peak Detector Option ........................................................ 19

Board Component Values for ASK (peak detector option)........................................................ 20

Component Arrangement Top Side for ASK Reception (peak detector option)........................ 21

5

6

Evaluation Board Layouts .......................................................................................22

Package Description ................................................................................................23

6.1

Soldering Information ..................................................................................................... 23

7

Disclaimer .................................................................................................................24

39012 07122 02

Rev. 006

Page 2 of 24

EVB Description

June/08

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