EVB72016

433MHz FSK/ASK Transmitter

Evaluation Board Description

3901272016 01

Page 2 of 12

EVB Description

Rev. 004

June/07

Document Content

1

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

1.1

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

1.2

Block Diagram .................................................................................................................. 3

2

Functional Description ..............................................................................................3

2.1

Crystal Oscillator .............................................................................................................. 3

2.2

FSK Modulation ................................................................................................................ 4

2.3

Crystal Pulling................................................................................................................... 4

2.4

ASK Modulation ................................................................................................................ 5

2.5

Output Power Selection .................................................................................................... 5

2.6

Lock Detection .................................................................................................................. 5

2.7

Low Voltage Detection...................................................................................................... 5

2.8

Mode Control Logic .......................................................................................................... 6

2.9

Clock Output ..................................................................................................................... 6

2.10

Timing Diagrams .............................................................................................................. 6

3

50

Ω Connector Board Circuit Diagram.....................................................................7

3.1

Board Component Values ................................................................................................ 7

3.2

50

Ω Connector Board PCB Top View .............................................................................. 8

3.3

Board Connection ............................................................................................................. 8

4

Evaluation Board Layout ...........................................................................................9

5

Board Variants............................................................................................................9

6

Package Description ................................................................................................10

6.1

Soldering Information ..................................................................................................... 10

6.2

Recommended PCB Footprints ...................................................................................... 10

7

Disclaimer .................................................................................................................12