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TH72012 Datasheet(PDF) 2 Page - Melexis Microelectronic Systems |
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TH72012 Datasheet(HTML) 2 Page - Melexis Microelectronic Systems |
2 / 20 page TH72012 433MHz ASK Transmitter 39010 72012 Page 2 of 20 Data Sheet Rev. 009 July/06 Document Content 1 Theory of Operation ...................................................................................................3 1.1 General ............................................................................................................................. 3 1.2 Block Diagram .................................................................................................................. 3 2 Functional Description ..............................................................................................4 2.1 Crystal Oscillator .............................................................................................................. 4 2.2 ASK Modulation ................................................................................................................ 4 2.3 Crystal Pulling................................................................................................................... 4 2.4 Output Power Selection .................................................................................................... 5 2.5 Lock Detection .................................................................................................................. 5 2.6 Low Voltage Detection...................................................................................................... 5 2.7 Mode Control Logic .......................................................................................................... 6 2.8 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 8 Reliability Information..............................................................................................19 9 ESD Precautions ......................................................................................................19 10 Disclaimer .................................................................................................................20 |
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