Schematics
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
5G FEM CH3
5G_ANT3
XR119 is new part wihtout Draytek part number
BPF (5150-5950MHz)
XJ12 preserved to test and debug only
SKY85743-31 :
Output power: +21 dBm, -43 dB DEVM, MCS11
Output power: +22 dBm, -40 dB DEVM, MCS11
Output power: +24 dBm, -35 dB DEVM, MCS9
ACX 5G BPF (XU63) :
Insertion Loss: 0.7 dB max.
50 ohm
50 ohm
50 ohm
50 ohm
50 ohm
50 ohm
50 ohm
XC147 is 6.3V voltage
in REF design
Layout Notice :
- Decoupling CAP should be placed before RES
Layout Notice :
- Each Vcc pin needs to be individually decoupled.
- VCC0, VCC1, VCC2, and VCC3 should NOT be shorted
together at the device pins.
Layout Notice :
- Control Pin C0, C1 should be shielded by GND
with more Vias.
BPF (5150-5950MHz)
ACX 5G BPF (XU63) :
Insertion Loss: 0.7 dB max.
Close to Diplexer XU6
For RTC7678:
To add XR155, XC199, XC210
50 ohm 50 ohm
Close to XEU4
BPF (5150-5950MHz)
ACX 5G BPF (XU54) :
Insertion Loss: 0.7 dB max.
Co-Layout
GND
GND
GND
GND
GND
GND
GNDGNDGND
GND
GND
GND
GND
+5V
GND
GND
GND
GND
GND
GND GND
GND
FECTL_3_1[17]
FECTL_3_2[17]
FECTL_3_0[17]
5G_TX3 [17]
TSSI5_3[17]
5G_RX3[17]
5G_ANT3_DI [19]
Title
Size Document Number Rev
Date: Sheet of
RF_5G_FEM_CH3
6B
V2766AX
<OrgName>
Custom
21 34Thursday, July 21, 2022
Title
Size Document Number Rev
Date: Sheet of
RF_5G_FEM_CH3
6B
V2766AX
<OrgName>
Custom
21 34Thursday, July 21, 2022
Title
Size Document Number Rev
Date: Sheet of
RF_5G_FEM_CH3
6B
V2766AX
<OrgName>
Custom
21 34Thursday, July 21, 2022
XR73
NULL/0R/0201/5%
12
XR74
(AX)0R/0201/5%
12
XC88
NULL/10pF/25V/0201/2%
XR82
(AX)0R/0201/5%
1 2
XC93
(AX)10pF/25V/0201/2%
XR69
(AX)0R/0402/5%
1 2
XC97
(AX)1pF/50V/0.05pF/0402
XC90
NULL/3nH/0201
12
XC94
(AX)10uF/10V/0603/20%
XC78
(AX)0.1uF/16V/0402
XC76
NULL/10pF/25V/0201/2%
XC81
NULL/10pF/25V/0201/2%
XR86
NULL/0R/0201/5%
12
XC77
(AX)0.1uF/16V/0402
XC82
NULL/10pF/25V/0201/2%
XR81
(AX)510R/0402/1%
1 2
XC80
NULL/10pF/25V/0201/2%
XC71
(AX)1pF/50V/0.05pF/0402
XC91
(AX)1nF/50V/0402/5%
XR84
(AX)6.8nH/0.6A/0805/5%
BF1608-N5R5NAH
XU18
NULL/(AX) BPF_5G
1
IN
2
GND
3
OUT
XC84
(AX)0.1uF/16V/0402
SKY85743-31
XEU4
(AX)SKY85743-31
VCC3
22
VCC2
23
VCC1
24
DET
8
PA_EN
4
GND1
1
GND3
3
VDD
19
GND6
6
LNA_IN
16
LNA_OUT
17
TX_IN
2
RX_OUT
14
C1
10
ANT
12
GND7
7
C0
13
GND9
9
GND11
11
GND18
18
GND21
21
GND5
5
GND15
15
GND20
20
PAD
25
XR78
NULL/0R/0201/5%
12
XC87 NULL/10pF/25V/0201/2%
XC73
(AX)10pF/25V/0201/2%
XR85
(AX)0R/0201/5%
1 2
XR75
NULL/0R/0201/5%
12
XR83
NULL/0R/0201/5%
12
XR76
(AX)0R/0201/5%
12
XR70
(AX)0R/0201/5%
1 2
XC89
(AX)1.5pF/50V/0201
XR79
(AX)0R/0201/5%
12
XC83
(AX)1pF/50V/0.05pF/0402
XR77
(AX)0R/0201/5%
1 2
XC74
NULL/10pF/25V/0201/2%
XR72
(AX)0R/0402/5%
1 2
XC72
NULL/10pF/25V/0201/2%
BF1608-N5R5NAH
XU17
(AX) BPF_5G
1
IN
2
GND
3
OUT
BF1608-N5R5NAH
XU16
NULL/ BPF_5G
1
IN
2
GND
3
OUT
5G_PE3
5G_LNA3
5G_CR3
FECTL_3_1
FECTL_3_2
FECTL_3_0
PA_5G3
5G_3B_CH3
5G_LNA3
5G_CR3
5G_TX3
PA_5G3
PA_5G3
PA_5G3
PA_5G3
5G_PE3
TSSI5_3
5G_ANT3
5G_RX3
5G_ANT3_DI
5G_3B_CH3