Figure 8-76. Mnue7367A Mixer And If Filter Circuits - Motorola APX 7000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1/UHF2
IN
U502
NC7WZ04
R597
0
3
IN
DIG_BAND_SELECT
C505
0.1UF
C504
100PF
L511
7.5NH
C510
TL_RX_B1_MIX_IN 1000PF
IN
U501
C502
AS211334
4PF
L510
L501
C507
C501 1
10NH J3
6.8NH
27PF
27PF
2
GND
L512
8.2NH 3
J2
C514
TL_RX_B2_MIX_IN
1000PF
IN
C527
2PF
C525 L509 C503
L508
11PF 20NH 8.7NH 20PF
DC_LIN_3V
IN
T505
059248278
C528
TL_RX_LO 100PF
P1 S1
1 3
IN
S2
2
R512
C529
100K
P2 S3
6 4
100PF
DNP
R501
5
NC
51
DNP
DC_LIN_1_8V
U502
NC7WZ04
4 1 6
NC
T503
059248278
6
V2
P1 S1
5 1 3
J1
C511 S2
4 2
V1
100PF
P2 S3
6 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
L503
470PF
220NH
T504
C515
059248278
6.8PF
P1
1
R502
68
P2
6
L502 C530
47NH 43PF
E501
1 2
R504 R506
C517
0.1UF 3.3K 150
R503
24K
Q501 2 5
BC858CD
Q501
BC858CD
R505
180K
C518
1000PF
FL501
L505
L504 C524 C519
31B01 150NH
27PF
390NH 18PF
1 4
IN OUT
C516
2.7PF RF_RX_IF_B

Figure 8-76. MNUE7367A Mixer and IF Filter Circuits

8-169
L506
C520
1000PF 150NH
R511
3.3 TL_RX_IF_OUT
OUT
C522
C531
15PF
1PF
R508
47
RF_RX_IF_I
C521
1000PF
R509
10
R507
2.7K
Q503
1
BFR380F
L507
33NH