Schematics
ECO NO: DATE:APPROVED:
REVISION RECORD
LTR
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DOCUMENT NO.:
TITLE & REV:
DATED:APPROVED:
EQA:
DATED:
DATED:DESIGNER: DEPARTMENT:
Hardware DEPT.
Spreadtrum communications, Inc.
COMPANY:
CONFIDENTIAL AND PROPRIETARY
Primary Antenna
TDD B34/B39/GSM PA + Switch
Band41/38 TX Path
Band40 TX Path
Band41/38 RX Path
FDD_B2
Co-pad
Band40 RX Path
Co-pad
FDD LTE_B7
FDD_B1
FDD_B3
FDD_B4
FDD_B8
FDD_B5
FDD_B28A
FDD_B12/17/20
FDD_B28B
match defoult for B12
C0744 15nH change to 27nH,optimzie GSM TX noise
co-pad
co-pad
co-pad
co-pad
Co-pad
Co-pad
C0735
22pF
C0736
4.7nH
C0737
NC
C0738
470pF
R0702
1.5K
C0739
47pF
C0740
10nF
C0741
10uF
C0743
NC
C0744
27nH
C0745
NC
C0746
10pF
C0781
3.6pF
C0718
3.6nH
NotchHB_OUT
LB_OUT
HBT
ISM
CTRL
PA
CMOS
PA
PA
Match/
Filter
Filt er
Match/
ANT
SW
DIRECTIONAL
COUPLER
Match
Match
1
GND
2
LB_IN
3
HB_IN
4
GND
5
SCLK
6
SDATA
7
VIO
8
VRAMP
9
VCC
10
VBATT
11
GND
12
GND
13
GND
14
GND
15
GND
16
GND
17
CPL
18
GND
19
NC
20
GND
21
GND
22
ANT
23
GND
24
TRX14
25
TRX13
26
TRX12
27
TRX11
28
TRX10
29
TRX9
30
TRX8
31
TRX7
32
TRX6
33
TRX5
34
TRX4
35
TRX3
36
TRX2
37
TRX1
38
GND
39
GND
U0705
RF-FEM-STM7916-31
T0700 T0701
C0722
47pF
MP003
1.8nH
MP004
NC
MP002
0.5pF
1
RF
2
GND
3
GND
4
GND
J0701
COM-RF-C87P101
M04106
NC
1
PA
2
GND
3
GND
4
ANT
5
GND
UM040
RF-SAW-SAFEA2G35MF0F0A
2350MHz
M04105
2.2nH
M04104
8.2nH
M04004
3.6nH
M04005
47pF
M04006
6.8nH
1
UBAL1
2
GND1
3
GND2
4
UBAL2
5
GND3
UM041
RF-SAW-SAFFB2G65AA0F0A
BAND7Â˲ ¨ Æ÷
M04113
NC
M04114
2.2nH
1
RX
2
GND1
3
TX
4
GND2
5
GND3
6
ANT
7
GND4
8
GND5
UM002
RF-SAW-DUPLEX-SAYEY1G88BA0B0A
TxRx:1880/1960MHz
M00205
1.0nH
M00204
0.5pF
M00212 0
M00211
1.8nH
M00213
3.3nH
M00214
1.5nH
M00206
2.4nH
M04112
47pF
M04111
NC
M00215
NC
1
UBLN1
2
GND1
3
GND2
4
UBLN2
5
GND3
UMX02
RF-SAW-SAFFB1G96AB0F0A
1960MHz
M00216
NC
M04013
NC
M04014
2.2nH
M04012
47pF
M04011
NC
M00704
2.7nH
M00712
33pF
M00711
NC
1
RX
2
GND1
3
TX
4
GND2
5
GND3
6
ANT
7
GND4
8
GND5
UM007
RF-SAW-DUPLEX-SAYEY2G53BA0F0A
TxRx:2535/2655MHz
M00713
1.2pF
¡ À0.25pF
M00714
3.3nH
M00705 0
M00706
9.1nH
M00105 0
M00104
15nH
1
RX
2
GND1
3
TX
4
GND2
5
GND3
6
ANT
7
GND4
8
GND5
UM001
RF-SAW-DUPLEX-SAYEY1G95GA0F0A
TxRx:1950/2140MHz
M00112
47pF
M00111
NC
M00114
1.5nH
M00113
3.3nH
1
RX
2
GND1
3
TX
4
GND2
5
GND3
6
ANT
7
GND4
8
GND5
UM003
RF-SAW-DUPLEX-SAYEY1G74BC0B0A
TxRx:1748/1843MHz
M00305 0
M00304
NC
M00312
22pF
M00311
8.2nH
M00313
2.2nH
M00314
1.0nH
M00306
2.2nH
M00106
1.8nH
M00405
9.5pF
M00404
2.7nH
1
RX
2
GND1
3
TX
4
GND2
5
GND3
6
ANT
7
GND4
8
GND5
UM004
RF-SAW-DUPLEX-SAYEY1G95GA0F0A
TxRx:1950/2140MHz
M00412
47pF
M00411
NC
M00414
1.5nH
M00413
2.4nH
M00406
NC
M00811
2.2pF
1
RX
2
GND
3
TX
4
GND
5
GND
6
ANT
7
GND
8
GND
UM008
RF-SAW-DUPLEX-SAYEY897MBG0F0A
TxRx:897.5/942.5MHz
M00806
NC
M00805
39pF
M00804
6.2nH
M00812
47pF
M00813
NC
M00814
15nH
M00505 0
M00512
6.8pF
M00511
NC
M00513
18nH
M00506
NC
M00504
6.2nH
1
RX
2
GND
3
TX
4
GND
5
GND
6
ANT
7
GND
8
GND
UM005
RF-SAW-DUPLEX-SAYEY831MBA0B0A
TxRx:831.5/876.5MHz
M00514
15nH
MA2805 0
MA2812
15nH
MA2811
NC
MA2813
NC
MA2806
6.8nH
MA2804
NC
1
RX
2
GND
3
TX
4
GND
5
GND
6
ANT
7
GND
8
GND
UMA28
RF-SAW-DUPLEX-SAYEY831MBA0B0A
TxRx:831.5/876.5MHz
MA2814
47pF
M01705 0
M01712
15nH
M01711
NC
M01713
NC
M01706
NC
M01704
6.8nH
1
RX
2
GND
3
TX
4
GND
5
GND
6
ANT
7
GND
8
GND
UM017
RF-SAW-DUPLEX-SAYEY831MBA0B0A
TxRx:831.5/876.5MHz
M01714
47pF
MB2805 0
MB2812
15nH
MB2811
NC
MB2813
NC
MB2806
NC
MB2804
6.8nH
1
RX
2
GND
3
TX
4
GND
5
GND
6
ANT
7
GND
8
GND
UMB28
RF-SAW-DUPLEX-SAYEY831MBA0B0A
TxRx:831.5/876.5MHz
MB2814
47pF
GND
1
TXM
2
ANT
3
4
J0702
RF-C90P106-FY
M00217
NC
1
GND
2
RFO1
3
GND
4
RFI1
9
VCTL
8
RFO2
7
GND
6
RFI2
10
VDD
5
GND
U2
MXD8546C
C0004
18pF
C0702
100nF
R0704 0R0710 0
R0703 NC
R0711 NC
R07070
R07090
R0705 NC
R0706 NC
M00515
NC
1
UBLN1
2
GND1
3
GND2
4
UBLN2
5
GND3
UMX01
RF-SAW-SAFFB1G96AB0F0A
1960MHz
M00516
NC
C0750
NC
PCC_RFFE_SDA0
[8,11]
PCC_RFFE_SCK0
[8,11]
RF_TX_LB_GSM
[8]
RF_PA_RAMP
[11]
VDD1V85
RF_TX_HB_GSM/B34/B39
[8]
ANT_CON
[9]
RF_POWER_DET
[8]
ANT_CON
[9]
SW_TX_TDD_B41
[9]
SW_TX_TDD_B40
[9]
PAM_TRX_TDD_B40
[8]
PAM_TRX_TDD_B41N_B38
[8]
RF_RX_B41/38
[8]
SW_TRX_WCDMA_B2
[9]
PAM_TX_FDD_B2
[8]
RF_RX_WCDMA_B2
[8]
RF_B41_PRX_PA_1
[8]
RF_RX_B40
[8]
RF_B40_PRX_PA_1
[8]
SW_TRX_FDD_B7
[9]
PAM_TX_FDD_B7
[8]
RF_RX_FDD_B7
[8]
SW_TRX_FDD/W_B1
[9]
PAM_TX_FDD/W_B1
[8]
RF_RX_FDD/W_B1
[8]
SW_TRX_FDD_B3
[9]
PAM_TX_FDD_B3
[8]
RF_RX_FDD_B3
[8]
SW_TRX_FDD/W_B4
[9]
PAM_TX_FDD_B4
[8]
RF_RX_FDD/W_B4
[8]
SW_TRX_FDD/W_B8
[9]
RF_RX_FDD/W_B8
[8]
PAM_TX_FDD_B8 [8]
SW_TRX_WCDMA_B5
[9]
PAM_TX_WCDMA_FDD_B5 [8]
RF_RX_FDD/W_B5
[8]
PAM_TX_FDD_B28A [8]
RF_RX_FDD_B28A
[8]
PAM_TX_FDD_B12/17/20 [8]
RF_RX_FDD_B12/17/20
[8]
SW_TRX_FDD_B28B
[9]
PAM_TX_FDD_B28B [8]
RF_RX_FDD_B28B
[8]
SW_TRX_FDD_B28A
[9]
SW_TRX_B12/17/20
[9]
SW_TRX_FDD/W_B8
[9]
SW_TRX_B12/17/20
[9]
SW_TRX_FDD/W_B4
[9]
SW_TRX_WCDMA_B5
[9]
SW_TRX_FDD_B28A
[9]
SW_TRX_WCDMA_B2
[9]
SW_TRX_FDD/W_B1
[9]
SW_TRX_FDD_B3
[9]
SW_TRX_FDD_B7
[9]
SW_TRX_FDD_B28B
[9]
PRX_ANT
[9]
VBAT
BOTTOM_ANT
[9]
PRX_ANT
[9]
BOTTOM_ANT [9]
TOP_ANT
[10]
DRX_ANT
[10]
VDDSIM2
RFCTL_3
[11]
SW_TX_TDD_B40
[9]
SW_TX_TDD_B41
[9]