Figure 8-94. Mnus4002A/E Mixer And If Filter Circuits - Motorola APX 7000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF2/ 700–800 MHz
DC_LIN_1_8V
IN
U502
NC7WZ04
R597
0
3
IN
DIG_BAND_SELECT
C505
0.1UF C504
100PF
L511
7.5NH
C510
TL_RX_B1_MIX_IN C502
1000PF
2.4PF
IN
U501
AS211334
L501
L510 C507
C501 1
5.1NH 20PF J3
6.8NH
20PF
2
GND
3
J2
IN
C527
C526 C503
TL_RX_B2_MIX_IN
2.7PF 1.5PF 2.7PF
L508 L509
8.2NH 8.2NH
DC_LIN_3V
IN
T505
059248278
C528
TL_RX_LO
100PF
P1
S1
1 3
IN
S2 2
R512
P2
100K S3 C529
6 4
DNP
100PF
5 R501
NC
51
DNP
U502
NC7WZ04
4
1 6
NC
T503
059248278
6
V2 C511
100PF
1 P1
5 S1 3
J1
4 S2 2
V1
P2
6
S3 4
5
NC
U502
NC7WZ04
VCC
GND
C506 C508 C512
0.1UF 1000PF 33PF
U506
1 15
GND1 MIXBIAS
2 14
INB GND4
3 13
INA RF_M
4 12
LG2 RF_P
5 11
LG1 GND3
S1
3
S2
2
C509 C513
1000PF 100PF
S3
4
5
NC
C523
220NH
470PF L503
1
T504
C515
059248278
6.8PF
P1
1
R502
68
P2
6
L502 C514
47NH 43PF
E501
1 2
C517
R504 R506
3.3K
0.1UF 150
R503
24K
Q501
Q501 2 5
BC858CD
BC858CD
R505
180K
C518
1000PF
FL501
L505
C524 C519
L504
31B01
150NH
27PF 18PF
390NH
4
IN OUT
C516
2.7PF

Figure 8-94. MNUS4002A/E Mixer and IF Filter Circuits

8-195
C520 L506
1000PF 150NH
R511
TL_RX_IF_OUT
3.3
OUT
C522
C525
15PF
1PF
R508
47
C521
1000PF
R509
10
R507
2.7K
Q503
1
BFR380F
L507
33NH