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AN3115 Fiches technique(PDF) 20 Page - STMicroelectronics

No de pièce AN3115
Description  LNB power supply based on the LNBH23L supply and control IC with step-up and I²C interface
PDF  28 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3115 Fiches technique(HTML) 20 Page - STMicroelectronics

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Component selection guidelines
AN3115
20/28
Doc ID 16830 Rev 3
2.8
EXTM-VOTX resistor (R9)
The LNBH23L device offers the possibility to customize the output tone amplitude through
the R9 resistor variation. According to the graph in Figure 13, the R9 resistor can be slightly
modified to change the output tone amplitude when the internal 22 kHz tone generator is
used. Values between 1 k
Ω and 2.7 kΩ are recommended.
Figure 11.
PDC optional circuit load calculation
Figure 12.
PDC circuit waveform



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