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LNBH26 датащи(PDF) 14 Page - STMicroelectronics

номер детали LNBH26
подробное описание детали  Dual LNBS supply and control IC with step-up and I짼C interface
PDF  38 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH26 датащи(HTML) 14 Page - STMicroelectronics

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Pin configuration
LNBH26
14/38
Doc ID 022771 Rev 1
Pin
Symbol
Name
Pin function
24
DSQIN-B
DSQIN for
DiSEqC envelope
input
Or
external 22 kHz
TTL input
It is intended for channel B 22 kHz tone control.
It can be used as DiSEqC envelope input or external 22 kHz TTL input
depending on the EXTM-B I²C bit setting as follows:
If EXTM-B=0, TEN-B=1: it accepts the DiSEqC envelope code from the
main microcontroller. The LNBH26 uses this code to modulate the
internally generated 22 kHz carrier.
If EXTM-A=TEN-A=1: it accepts external 22 kHz logic signals which
activate the 22 kHz tone output (refer to
Section 2.2).
Pull up high if the tone output is activated only by the TEN-B I²C bit.
Epad
Epad
Exposed pad
To be connected with power grounds and to the ground layer through vias
to dissipate the heat.
Table 2.
Pin description (continued)



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