Datasheet

Functional description ST7540
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Inputs and outputs of PA are available on pins PA_IN-,PA_IN+ and PA_OUT. User can easily
select an appropriate active filtering topology to filter the signal present on TX_OUT pin.
TX_OUT output has a current capability much lower than PA_OUT.
Figure 19. PA_OUT and V
CC
relationship
Vcc
V
PA_OUT(AC)
D03IN1425
3V
V
t
Vss
1.5V
V
PA_OUT(DC)
≤
≤