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TDA5251F1 Folha de dados(PDF) 7 Page - Infineon Technologies AG

Nome de Peças TDA5251F1
Descrição Electrónicos  ASK/FSK 315MHz Wireless Transceiver
Download  88 Pages
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Fabricante Electrônico  INFINEON [Infineon Technologies AG]
Página de início  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TDA5251F1 Folha de dados(HTML) 7 Page - Infineon Technologies AG

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TDA5251 F1
Version 1.1
Data Sheet
7
2007-02-26
page
Table of Contents
3.1.4
Power-Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42
3.2
Crystal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47
3.2.1
Synthesizer Frequency setting . . . . . . . . . . . . . . . . . . . . . . . . .
50
3.2.2
Transmit/Receive ASK/FSK Frequency Assignment . . . . . . . . .
50
3.2.3
Parasitics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
53
3.2.4
Calculation of the external capacitors . . . . . . . . . . . . . . . . . . . .
54
3.2.5
FSK-switch modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
54
3.2.6
Finetuning and FSK modulation relevant registers . . . . . . . . . .
55
3.2.7
Chip and System Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . .
56
3.3
IQ-Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
57
3.4
Data Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
58
3.5
Limiter and RSSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
59
3.6
Data Slicer - Slicing Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
3.6.1
RC Integrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
3.6.2
Peak Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
62
3.6.3
Peak Detector - Analog output signal . . . . . . . . . . . . . . . . . . . .
64
3.6.4
Peak Detector – Power Down Mode . . . . . . . . . . . . . . . . . . . . .
64
3.7
Data Valid Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
65
3.7.1
Frequency Window for Data Rate Detection . . . . . . . . . . . . . . .
67
3.7.2
RSSI threshold voltage - RF input power . . . . . . . . . . . . . . . . .
68
3.8
Calculation of ON_TIME and OFF_TIME . . . . . . . . . . . . . . . . . . .
68
3.9
Example for Self Polling Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .
69
3.10
Sensitivity Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70
3.10.1
Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70
3.10.2
BER performance depending on Supply Voltage . . . . . . . . . . .
72
3.11
Default Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
73
4
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
74
4.1
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
74
4.1.1
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . .
74
4.1.2
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
74
4.1.3
AC/DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
4.1.4
Digital Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
78
4.2
Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
81
4.3
Test Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
82
4.4
Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
83


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