Figure 9.2-24. Pmle2537G Frequency Generation Unit (Fgu) Schematic - Sheet 2 Of 4 - Motorola XTS 2500 Service Manual

UHF1 Schematics, Board Overlays, and Parts Lists
AUX3
4.6VSF_OUT
D271 D273
L270
390nH
VCTRL
R290
L271
0 C278
36nH
100pF
D272 D274
6816985H01-F
C292
0.1uF
Q273
47K
47K
10K
R287
0
4.7K
NP
R288
0
R271
6.8K R272
L275
150
390nH
C281
100pF
C280
R270
C279
100pF 8.2K
0.1uF
L274
390nH
C271
7.5pF
C274
6.8pF Q271
C282
2.0pF
C272
6.8pF
C275
L272
12pF
C273
8nH
3.3pF
IDCTR
C277
L273
51pF
390nH
C276
8.2pF
R284
100
TX VCO
R286
0
C283
0.1uF
R277
L276
C284
56
100pF 390nH
NP
R278
8.2K L278
C287
27nH
100pF
C285
1.5pF
Q272
C288 C293
6.8pF 7.5pF
R279
4.3K
C286
R280
100pF
100
R285
1K
Figure 9.2-24. PMLE2537G Frequency Generation Unit (FGU) Schematic – Sheet 2 of 4
Tx_VCO_Out
L279
27nH
R289
0
C294
15pF
L280
1uH
C289
9.1pF
9.2-25
TXRF_OUT
PRES_RX_IN
PRES_IN
C291
100pF
TP_PRESCALAR_OUT
TPSM0_508
1
L277
27nH
C290
7.5pF
February 14, 2012