Datasheet

Pin configuration LNBH25L
10/28 Doc ID 022634 Rev 2
Pin n° Symbol Name Pin function
22 DSQIN
DSQIN for
DiSEqC envelope
input
or
External 22 kHz
TTL input
It can be used as DiSEqC envelope input or external 22 kHz TTL
input depending on the EXTM I²C bit setting as follows:
EXTM=0, TEN=1: it accepts the DiSEqC envelope code from the
main microcontroller. The LNBH25L uses this code to modulate the
internally generated 22 kHz carrier.
EXTM=TEN=1: it accepts external 22 kHz logic signals which
activate the 22 kHz tone output (refer to Section 2.3 ).
Pull up high if the tone output is activated only by the TEN I²C bit.
Epad Epad Exposed pad
To be connected with power grounds and to the ground layer
through vias to dissipate the heat.
1, 5, 10, 11,
12, 13, 14, 24
N.C.
Not internally
connected
Not internally connected pins. These pins can be connected to GND
to improve thermal performances.
Table 2. Pin description (continued)