LG LM-X120HM Service Manual page 107

B5
L1425
1.0nH 1 2 1
RF_B5_PA_DPX [15] RF_B5_PA_PA_1 L1401
B8
GND
GND
1
RF_B8_PA_DPX [ 15] L1402
[33]
GND
B20
[15]
RF_B20/17_PA_DPX L1426
L1418
1.0nH 1 RF_B20/17_PA_PA_1 2 1
GND
B2
GND
1.0nH 1
RF_B2_PA_DPX [ 15]
[33]
B3
GND
L1450
RF_B3_PA_DPX [ 15]
[33]
B1
GND
RF_B1_PA_DPX [ 15] L1451 2
[33]
GND
B4/B66
RF_B4B66_PA_DPX [15]
VPA_VCC2
0.47UF
C1418
GND
VPA_VCC1
C1420
0.47UF
GND
VPA_VCC2
C1422
0.47UF
GND
TRX B40
[15] L1416 1 2 L1490 1 2
2.0NH 2.0NH
RF_B40_TRX_TXM
RF_B40_TRX_BAW_OUT
NF
0.3pF
L1415
C1424
GND GND
TRX B38B41
U1406
RF-SAW-F6HH2G350EH71
[15]
C1485 1 2 1.0nH RF_B41_TRX_SAW_OUT
4
RF_B38B41_TRX_TXM OUTPUT INPUT
3.6nH
10NH
L1486
L1423
B7 TX
1.0nH
2 1
RF_B7_PA_DPX [ 15]
[33]
L1407
GND GND
2
4.3nH
3.3PF
C1410
GND
2
4.3nH
3.3PF
C1412
GND
2
4.3nH
3.3PF
C1448
GND
2L1405
1.5PF
C1414
22
GND GND
RF_B2_PA_PA
23
MB2
24
GND
RF_B4/66_PA_PA 25
MB3
RF_B1_PA_PA 26
MB4
2.7nH
27
GND
28
VCC2_2
29
2.7PF VCC1
30
VCC2
31
C1416 GND
RF_B3_PA_PA 32
MB5
RF_B40_TRX_PA 33
GND
HB1
34
GND
RF_B7_TRX_PA 35
HB2
36
GND
GND
1 2.7nH
2.7PF
C1481
GND
1.8nH 2 1 L1410
NF 3.3NH
L1409 L1411
GND
GND
100PF
C1419
GND
100PF
C1421
GND
100PF
C1423
GND
U1404
RF-SAW-F6HH2G350EH71
L1487 2 1
4 1 RF_B40_TRX_BAW_IN 1.0nH
OUTPUT INPUT
6.8nH
L1488
GND GND
1 RF_B41_TRX_SAW_IN L1472 2 1 1.5nH
107
B28B
5.6NH
L1480 2 1 RF_B28B_PA_DPX
3.9PF
C1425
B28A
GND
GND
L1482 2 1 5.6NH
RF_B28A_PA_DPX
3.9PF
C1428
4G PA input need LPF for harmonic rejection
GND
GND 1 2 9.1nH C1467 33PF
R1401
3.3PF
3.3PF
C1430
R1402
GND GND
VC7643-31
sequence by alphabet
1 2 3.7nH 33PF
L1419 C1463
15 2pF 1.5pF
GND
14
RFIN_L2
RF_LB_TX_PA
13 C1466 C1465
RFIN_L1
12
RFIN_M
11
NC RF_MB_TX_PA
LTE_VMIPI GND GND
10
NC
9
NC
8
VBATT
7 R1415
VIO
1 2
6 MIPI0_SCLK [ 3]
SCLK [12]
5
MIPI0_SDATA [3] [12]
SDATA
4 0
NC 100PF 0.1uF 4.7uF
3 RF_HB_TX_PA
RFIN_H
2
GND
C1471 C1484
1 C1475
GND
1nF
GND C1478
GND
GND GND GND
GND
R1405 4.3nH C1476 1 2 8.2pF
1.0pF 1.2pF
C1461 C1460
LPF for more GND GND
margin on Tx
spurious
LTE_VFE28
[3]
BPI_BUS10
B38/B40/B41 PRX
U1440
6 1
EN GND
L1421
5 2
RFIN VDD
4.3NH
1.5nH
4 3 33PF C1493 L1420 2 1
GND RFOUT
RF_B40B41_PRX_PA_5
MXD8015H Maxscend
RF_B40B41_PRX_PA 33PF RF_B40B41_PRX_PA_4 33PF RF_B40B41_PRX_PA_3
C1492 C1491
GND
For power LTE_VMIPI star connection
LTE_VMIPI
1.0uF
C1470
GND
For power VFE28 star connection
LTE_VFE28
1.0uF
C1468
GND
2
SH1407
10mil 2
VPA_VCC1
2
Note:
Use 0603 for lower Capatance drop
SH1408 R1403
50mil
VPA_VCC2
0
4.7uF
C1457
GND
GND
Note:
Reserve one tuning cap. For PMIC VPA total cap requirement,
the total cap at RF side should be in 6.2uF +/-10%.
[15]
[33] [15]
RF_LTE_LB_TX_RFIC [13] [31]
RF_LTE_MB_TX_RFIC RF_LTE_MB_TX_RFIC [ 13]
[31]
VIO18_PMU
0
1 2R1416
VBAT [7,9,15]
TVS1401 [3]
AUX_IN1_NTC
1
C1482
NTC1401
1.0uF
1%
2
RF_LTE_HB_TX_RFIC [ 13] [31]
GND
Thermistor / To sense board level temperature
NTC3201 close to PA , and located in the same layer
33PF C1459 RF_B40/B41_PRX_RFIC [13]
1.8nH
L1424
GND
From PMIC
SH1401
VIO18_PMU
SH1402
VFE28_PMU
1
1
SH1403
VPA_PMU
<TITLE>
TITLE:
14_PA_TX
DOCUMENT NO.:
DEPARTMENT: Hardware DEPT.
COMPANY:
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REV: <REV>
SIZED: A1
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2019/4/8 SHEET: