TH7107 Просмотр технического описания (PDF) - Melexis Microelectronic Systems

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TH7107

315/433MHz FSK/FM/ASK Transmitter

Melexis Microelectronic Systems  

TH7107

315/433MHz

FSK/FM/ASK Transmitter

Document Content

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

1.1 General............................................................................................................................... 3

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

2 Functional Description ..............................................................................................4

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

2.2 Frequency Modulation ........................................................................................................ 4

2.3 ASK Modulation.................................................................................................................. 4

2.4 Mode Control Logic............................................................................................................. 4

3 Pin Definition and Description ..................................................................................5

4 Electrical Characteristics ..........................................................................................7

4.1 Absolute Maximum Ratings ................................................................................................ 7

4.2 Normal Operating Conditions.............................................................................................. 7

4.3 Crystal Parameters............................................................................................................. 7

4.4 DC Characteristics.............................................................................................................. 8

4.5 AC Characteristics.............................................................................................................. 8

4.6 Output Power Selection ...................................................................................................... 8

5 Crystal Pulling ............................................................................................................9

5.1 Center Frequency as Function of CX1 and CX2 ................................................................. 9

5.2 Frequency Deviation as Function of CX1 and CX2 ........................................................... 10

6 Test Circuit ...............................................................................................................11

6.1 Test circuit component list (Fig. 4) .................................................................................... 11

7 Spectrum Plots.........................................................................................................12

8 Package Information ................................................................................................14

9 Reliability Information..............................................................................................15

10 ESD Precautions ......................................................................................................15

11 Disclaimer .................................................................................................................16

3901007107

Rev. 008

Page 2 of 16

Data Sheet

May/03

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