Figure 8-26. Mnus4000A//C/E Uhf1 Receiver Front End Circuit - Motorola APX 7000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1/700–800 MHz
INPORT
IN
INPORT
IN
INPORT
IN
R2010
1K
C2025
100PF
ANA_RX_FE_TUNE
C2028
7.5PF
INPORT
TL_RX_UHF1_FE_IN
IN
C2041
0.1UF

Figure 8-26. MNUS4000A//C/E UHF1 Receiver Front End Circuit

DC_LIN_1_8V_A
CTRL_RX_UHF1_LNA_A = 3V (HIGH), LNA'S TURN ON DC_RX_UHF1_LNA_C_13A
Q2020
MUN5212T
3
DIG_CTRL_RXU 22K
1
R2006 R2007
10K 10K
VR2005 VR2006
L2010
L2009
1SV305 1SV305
18NH 18NH
2 2
1 1
L2008
C2053
5.6NH
C2029 7.5PF
C2052
22PF
22PF
C2035
C2039
3.3PF 3.3PF
L2015 C2058
2.7PF
91NH
C2038
1.8PF
L2016
15NH
VR2010
1SV305
E2021
1 2
R2023 R2024
10K 33
INPORT
R2021
75K
IN
BC858CD
Q2022
C2023 C2024
2 5
100PF 4.7UF
R2022
ANA_RX_FE_TUNE
BC858CD
120K
Q2022 R2025
2.7
C2020
C2022
4.7UF
100PF
L2035
22NH
C2044
C2032
9.1PF
100PF
L2034
56NH
R2035
C2033
1.2K
68PF
C2036
1
U2032
1.5PF
BFR380F
C2037
2.4PF
L2036
1.6NH
R2011
1K
R2008
R2009
10K
10K
VR2008
L2014 L2013
1SV305
18NH 18NH
2
1 2 1
VR2007
1SV305
L2012
C2063
C2056 5.6NH 22PF
C2057
7.5PF
22PF
C2059 C2061
3.3PF 3.3PF
L2017
C2042
82NH
2.7PF
C2060
2.2PF
L2019
15NH
VR2020
1SV305
8-47
C2064
7.5PF
OUTPORT
RF_RX_UHF1_FE_OUT
OUT