Motorola SSETM 5000 - Manual (Page 173)

Schematics, Board Layouts, and Parts Lists: Transceiver (RF) Board 12-7
6881094C12-A November 11, 2004
Figure 12-6. NUE7337_ Frequency Generation Unit (Synthesizer) Circuit—2 of 2
Steering Line
2 to 11 VDC
0V for RX
VCO Select Line
DNP
DNP
TR201
17.76nH
U502
1
33pF
C301
33K
R218
R209
33K
R310
51K
220
R304
22
R303
220
R312
C318
10pF
C320
120pF
C307
120pF
C319
1.5pF
33pF
1.8pF
C302
C311
R319
VSF
R320
1K
R318
10K
270K
Q301
C399
0.5pF
C398
0.5pF
C927
120pF
R219
33 0
68nH
L309
C305
2.2pF
C926
3pF
C312
NC
NC
120pF
NC
NC
NC
L231
470nH
NC
2.7pF
C309
300
R314
390nH
L303
390nH
L306
R317
51
390nH
L304
R316
30
R313
18
L301
L302
390nH
300
390nH
1
2
V5A
R315 D304
1
2
D302
26.25nH
TR202
2
Q215
D307
1
33pF
C308
R306
30K
30K
R301
51K
R709
R309
220
Q211
D303
1
2
R308
24
33
R311
C317
22pF
14
VCC_LOGIC
18
C315
0.1uF
7
SUPER_FLTR
3
TRB_IN
19
TX_BASE
16
TX_EMITTER
15
TX_IADJ
1
TX_OUT
10
TX_SWITCH
13
VCC_BUFFERS
11
GND_FLAG
9 17
GND_LOGIC
PRESC_OUT
12
RX_BASE
5
RX_EMITTER
6
RX_IADJ
2
RX_OUT
8
RX_SWITCH
U250
50U54
COLL_RFIN
4
FLIP_IN
20
GND_BUFFERS
120pF
33pF
C316
C314
C306
1.5pF
C304
3.9pF
82nH
C313
5.6pF
L308
22nH
L307
3.9pF
C310
1
2
3.9pF
C303
390nH
D308
D305
1
2
L305
D306
1
2
D301
1
2
Q214
Q210
AUX2
VSF
PRESC
AUX4
V5A
RXLO
TXRF
VCTRL
VSF
VSF
VSF
VSF
VSF
AUX4
MAEPF-27942-O