74
KX-TG7741S/KX-TG7742S/KX-TG7743S/KX-TGA470S
14.3. Schematic Diagram (Base Unit_RF)
to Handset
from Handset
C822
10p
RXON
R807
220
GND
GND
C823
100p
KX-TG7741/7742/7743 SCHEMATIC DIAGRAM (Base Unit_RF)
NC: No Components
ZA1
NC
GND
1
2
4
5
6
7
9
11
3
8
10
12
RF_TXp
RF_TXn
C805
3.3p
GND
GND
C806
3.3p
L802
5.6n
GND
GND
GND
C810
1p
C813
1p
L803
5.6n
R806
220
TXON
C825
10p
GND
C812
NC
R802
NC
R803
NC
R801
18
C814
10p
GND
C809
10p
+3.0V
C811
10p
GND
GND
GND
RF_RXn
RF_RXp
C864
7p
C863
7p
C820
0.7p
C837
0.9p
C826
10p
DA801
1
2
3
GND
GND
GND
GND
C802
1.8p
C803
1.5p
C804
1.8p
C855
10p
GND
ANT2
C856
100p
C841
1p
GND
GND
DA802
1
2
3
GND
ANT1
GND
C858
100p
C857
10p
GND
ANT_2
GND
ANT2_TP
1 2
GND
C853
10p
C854
NC
C844
NC
GND
GND
C843
NC
C851
10p
GND
C850
NC
ANT_1
GND
ANT1_TP
1 2
GND
GND
W 0.15mm
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 20+/-2mm
3rd layer
W 0.125mm
L 7.6mm
Gap 0.125mm
1st layer
BPF
W 0.15mm
L 5.0mm
1st layer
W 0.15mm
L 5.0mm
1st layer
Pre-matching
W 0.15mm
L 20+/-1mm
3rd layer
W 0.15mm
L 20+/-2mm
3rd layer