Hytera PD415 - Page 49

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A
A
接收中频
3V3_RX_RF
3V3_RX_RF
2NDLO_1
(9)
IF_Out
(6)
RSSI
(1)
N_CON
(1)
AF_IN
(2)
C501
0.1u
C501
0.1u
L503 560nHL503 560nH
R510
27k
R510
27k
R504
4.7
R504
4.7
TP501
AF
TP501
AF
1
C504
0.1u
C504
0.1u
C52668p C52668p
R503 100R503 100
R512
NC
R512
NC
R513
1.5k
R513
1.5k
C519
22u
C519
22u
C512
0.1u
C512
0.1u
R507 330KR507 330K
C520 10uC520 10u
C531
0.01u
C531
0.01u
R511 3.3kR511 3.3k
Q504
DTA114YE
Q504
DTA114YE
3
1
2
C513 2.2pC513 2.2p
C532
NC
C532
NC
C524
1p
C524
1p
U501
BA4116FV
U501
BA4116FV
OSC IN
1
OSC OUT
2
MIX OUT
3
VCC
4
IF IN
5
DEC
6
FIL OUT
7
FIL IN
8
AF OUT
9
QUAD
10
IF OUT
11
RSSI
12
N-DET
13
N-REC
14
GND
15
MIX IN
16
Z501
450K
Z501
450K
2 1
3 4
C522
0.047u
C522
0.047u
R5141.5k R5141.5k
R508 8.2kR508 8.2k
Z502
JTBM450C24
Z502
JTBM450C24
1 2
C514
30p
C514
30p
C529
0.1u
C529
0.1u
C516 1000pC516 1000p
C533
0.01u
C533
0.01u
L504
560nH
L504
560nH
C525
2200p
C525
2200p
C515
0.01u
C515
0.01u
C517
NC
C517
NC
C527
0.01u
C527
0.01u
C534
NC
C534
NC
C518 100pC518 100p
Q502
2SC5108
Q502
2SC5108
1
32
C510 30pC510 30p
C505 0.1uC505 0.1u
42
接收中频
IF Circuit of Receiver