TH72036 Datasheet, PDF (2/16 Pages) Melexis Microelectronic Systems – 868/915MHz FSK/ASK Transmitter

TH72036
868/915MHz
FSK/ASK Transmitter
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
PRELIMINARY ^{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 Pin Definition and Description ..................................................................................7
4 Electrical Characteristics ..........................................................................................8
4.1 Absolute Maximum Ratings .............................................................................................. 8
4.2 Normal Operating Conditions ........................................................................................... 8
4.3 Crystal Parameters ........................................................................................................... 8
4.4 DC Characteristics............................................................................................................ 9
4.5 AC Characteristics .......................................................................................................... 10
4.6 AC Characteristics .......................................................................................................... 11
4.7 Output Power Steps – ASK Mode .................................................................................. 11
5 Test Circuit ...............................................................................................................12
5.1 Test circuit component list to Fig. 6 ................................................................................ 12
6 Package Description ................................................................................................13
6.1 Soldering Information ..................................................................................................... 13
6.2 Recommended PCB Footprints ...................................................................................... 13
7 Reliability Information..............................................................................................14
8 ESD Precautions ......................................................................................................14
9 Disclaimer .................................................................................................................16
3901072036
Rev. 005
Page 2 of 16
Data Sheet
June/07