TH72035 Datasheet, PDF (2/20 Pages) Melexis Microelectronic Systems – 868/915MHz FSK/ASK Transmitter

TH72035
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
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 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 Output Power Steps ....................................................................................................... 10
5 Typical Operating Characteristics ..........................................................................11
5.1 DC Characteristics.......................................................................................................... 11
5.2 AC Characteristics .......................................................................................................... 14
6 Test Circuit ...............................................................................................................17
6.1 Test circuit component list to Fig. 18 .............................................................................. 17
7 Package Description ................................................................................................18
7.1 Soldering Information ..................................................................................................... 18
7.2 Recommended PCB Footprints ...................................................................................... 18
8 Reliability Information..............................................................................................19
9 ESD Precautions ......................................................................................................19
10 Disclaimer .................................................................................................................20
39010 72035
Rev. 008
Page 2 of 20
Data Sheet
June/07