your position is our focus
Active Antenna
ADDET_N
GND
RF_IN
V_ANT
VCC_RF
GND
V_ANT
Antenna
Supply in
C2
FB1
R1
R2
Analog GND
R3
R4
R5
T
PN
T2
PNP
1
P
ADDET_N
C1
TIM/LEA
Figure 65: Schematic of open circuit detection
AADET_N
is
assigned
to
different
pins
for
TIM-4R
and
the
other
variants
of
TIM-4x.
On
TIM-4x,
AADET_N
is
assigned
to
pin
27
(see
Figure
65).
On
TIM-4R,
AADET
is
assigned
to
pin
30
since
pin
27
is
used
for
the
SPI
interface.
In
case
of
designs,
where
either
a
TIM-4x
or
a
TIM-4R
shall
be
populated,
a
layout
for
two
optional
0-
Ohm
resistors
to
pin
27
and
30
shall
be
provided
(see
Figure
66).
TIM-4R
AADET_N
27 (MISO)
30 (AADET_N)
TIM-4x
w/o TIM-4R
AADET_N
27 (AADET_N)
No resistor
OR
No resistor
OR
30 (Reserved/
GPSMODE12)
Figure 66: Connection of "Open Circuit Detection" signal to AADET_N input
GPS
Modules
-
System
Integration
Manual
(SIM)
(incl.
Reference
Design)
Receiver
Description
GPS.G4-MS4-05007-A1
Page 77