Infineon BGT24MTR11, Руководство пользователя

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BGT24MTR11
User's Guide
List of Content, Figures and Tables
Application Note AN305, Rev. 1.0 2012-11-15 4 / 15
Table of Content
1 Introduction ........................................................................................................................................ 5
2 Overview ............................................................................................................................................. 5
3 VCO Section ........................................................................................................................................ 6
3.1 Tuning Voltage Inputs .......................................................................................................................... 6
3.2 Prescalers ............................................................................................................................................ 8
3.2.1 Divide-by-16 Prescaler ......................................................................................................................... 8
3.2.2 Divide-by-65536 Prescaler ................................................................................................................... 8
4 Transmitter Section ........................................................................................................................... 9
4.1 TX Section ............................................................................................................................................ 9
4.1.1 Enabling and Disabling of the Output Power ..................................................................................... 10
4.1.1.1 Enabling/disabling via the SPI bus. .................................................................................................... 10
4.1.1.2 Enabling/disabling via the TXOFF pin. ............................................................................................... 10
4.2 LO Section .......................................................................................................................................... 11
5 Receiver Section .............................................................................................................................. 11
5.1 Low Noise Amplifier............................................................................................................................ 11
5.2 Mixer ................................................................................................................................................... 11
6 Sensors ............................................................................................................................................. 12
6.1 Power Sensors ................................................................................................................................... 12
6.2 Temperature Sensor .......................................................................................................................... 13
Authors 14
List of Figures
Figure 1 BGT24MTR11 block diagram ............................................................................................................... 5
Figure 2 VCO frequency vs. tuning voltage V
FINE
= V
COARSE
and temperature ................................................... 6
Figure 3 3D plot: Output frequency vs. V
COARSE
and V
FINE
................................................................................. 7
Figure 4 2D plot: Output voltage vs. V
COARSE
and V
FINE
...................................................................................... 7
Figure 5 Termination of Div16 outputs ............................................................................................................... 8
Figure 6 TX output power vs. frequency for different temperatures ................................................................. 10
Figure 7 Transfer characteristics of power sensors ......................................................................................... 12
Figure 8 Transfer characteristics of temperature sensor ................................................................................. 13
List of Tables
Table 1 Output power reduction ........................................................................................................................ 9
Table 2 Truth table for analog multiplexer ....................................................................................................... 12