1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
4
7
Receiver Section
9155
B
20-Feb-2002
23:54:31
C:\Program Files\Design Explorer 99 SE\rft\r50\r50.Ddb - RCV.Sch
Title
Size:
Number:
Print Date:
File:
Revision:
Sheet
of
A3
RF Technology Pty Ltd
Unit 10, 8 Leighton Place
Hornsby, NSW 2077
Australia
Rev. Release Date:
Originator:
Rev No.
ECO No.
Description of Change
R432
22K
C452
100nF
R403
10R
R408
10R
R411
270R
C429
100nF
C418
120pF
C453
100nF
R402
10R
C401
120pF
C415
100pF
C417
150pF
C406
120pF
C422
68pF
C404
120pF
C402
120pF
C405
120pF
L404
132-18SM
L405
132-20SM
RF_In
C428
100nF
1st_LO
L401
132-15SM
RFin -119dBm
FIL404
21M15A
R452
82K
C477
18pF
L423
2u2H
FIL405
21M15A
R426
47K
C478
18pF
C471
4p7F
C423
390pF
R435
390R
C475
15pF
+10V
L406
132-17SM
L407
132-13SM
L402
132-15SM
L403
132-15SM
L408
132-13SM
L425
560nH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
OSC
RSSI
U401
NE615
C479
22pF
L426
3u3H
C410
100pF
X402
21.855MHz
C439
10nF
C430
100nF
C432
100nF
C434
100nF
C431
100nF
C433
100nF
C474
56pF
C460
10nF
C454
120pF
C459
10nF
C461
10nF
C480
1nF
R413
47R
C435
120pF
C481
1uF
R445
8K2
RSSI
R415
4K7
R441
22K
R430
100K
R421
10K
R428
100K
R422
22K
C413
330pF
C412
330pF
C437
100nF
C488
1uF
R446
1K
R447
100K
+10V
DISC
C436
100nF
C407
1nF
C403
120pF
C416
150pF
C408
1nF
D403
BAV99
FIL402
CFUCG455D
FIL403
CFUCG455D
+10V
C483
10nF
DISC
C485
1nF
R439
390R
C440
120pF
C447
47pF
R407
18K
C442
68pF
C444
120pF
C441
1nF
C443
100pF
L410
270nH
L411
270nH
R434
10K
R438
47K
N_DET
1st_LO
RSSI
+10V
C487
100nF
R448
150K
L409
680nH
C420
180pF
C419
270pF
C421
68pF
25MHz HIPASS FILTER & 50MHz LOWPASS FILTER
frontend filter
Simulation file: c:\eagle\work\9LP&9HP.SCH
1
2
3
4
5
6
MX401
ADE-1H
2nd_LO
2nd_LO
C411
330pF
C476
1uF
R444
100K
N_DET
2
3
1
U402A
LM224
5
6
7
U402B
LM224
9
10
8
U402C
LM224
V+
4
V-
11
U402E
LM224
14
13
12
U402D
LM224
2
3
1
U605A
LM224
C409
1nF
R429
470K
+10V
RF_In
C438
100nF
R427
2K2
X401
CDBC455CX29
C482
33pF
C484
33uF
R451
NF
L424
2u2H
C448
5p6F
C465
NF
C449
5p6F
C451
10pF
NSQ_SET
NSQ_SET
C455
120pF
N_BLK_EN
+5V
R417
33K
N_BLK
R436
220K
R431
100K
D404
BAV99
+5V
Q405
BFR92A
Q406
BFR92A
3
4
1
2
5
U403
LMV7219M5
R418
33K
D401
BAT17
R419
10K
D402
*BZX84C5V1
R449
5K6
R420
100K
R433
33K
Cext
14
Rext
15
A
1
B
2
CLR
3
Q
13
Q
4
VCC
16
GND
8
U404A
74HC123A
+5V
R450
6K8
C489
390pF
Cext
6
Rext
7
A
9
B
10
CLR
11
Q
5
Q
12
U404B
74HC123A
Q401
BFQ17
L412
220nH
L413
220nH
L414
220nH
C446
120pF
C456
68pF
C457
1nF
C462
1nF
L417
100nH
L418
NF
C468
33pF
Q402
BFQ193
R405
2R2
R409
15K
R424
33K
L420
150nH
C425
100nF
R401
10R
C450
2p7F
1
2
3
4
5
6
7
8
FIL401
MKFC246
L419
100nH
C424
100nF
L422
100nH
C473
2p7F
1
2
3
4
5
6
MX402
ADE-1H
C458
1nF
+10V
Q403
BFQ17
R406
10R
R410
10R
R425
18K
L421
680nH
C426
100nF
R404
10R
C427
100nF
R423
10K
R443
1K
D407
BZX84C5V1
C486
1uF
R437
220K
R442
1K
C445
68pF
Simulation file: c:\eagle\work\f2550amp.SCH
R412
22R
C467
5p6F
C466
120pF
C463
1nF
Q404
MMBFJ309
C469
15pF
C464
56pF
R416
10K
R414
4K7
N_BLK
C470
470pF
C472
NF
C490
NF
R453
470R
RF_AMP
RF_AMP
R455
120R
R462
150R
R460
330R
R461
330R
R456
120R
*Tantalum
Q408
MMBT3906
R459
33K
R454
10R
+5V
C496
10pF
D405
BAT17
C495
100nF
C491
100nF
D406
MMBV109
R458
10K
-5V
-5V
R463
470R
C492
100nF
3rd_LO_ADJ
3rd_LO_ADJ
N_BLK_EN
Low ESR
C494
100nF
AGC
9
10
8
U303C
LM224
R466
1K
R465
4K7
R464
22K
Q407
MMBT3904
R457
10K
+10V
1st_LO
2nd_LO
R467
47K
C493
100nF
R468
1K
R440
NF
