Motorola PRO Elite Serie Manual De Servicio página 116

8-6
Rx Tx
39 Bias2 3.7V 1.6V
40 Bias1 1.6V 3.7V
Figura 8-6. Diagrama esquemático del sintetizador de UHF banda 2
U210
U211
TC7ST04FU
C296 C265
TC7ST04FU
0.1uF
4 1 4 NU
1
NC NC
3 5 3 5
GND VCC GND VCC
2
C258
2
.01uF
1.65V
C259
.01uF
CR201
3 K3 A3 4
A2 5
2 K2
1 A1 6
K1
C230 C229
100pF 1000pF
C292
C228
C283 C282 0.1uF
4.7uF
NU
NU
C298
0.1uF
Low (mV)
High (3.3V) High (3.3V)
CLK
CSX
10
MODIN
DATA
30
C214
C211
C210 C212
100pF R201
100pF 100pF 100pF 35
82K
21
R202
40
100K
39
26
C264
L261
27
39nH 100pF
32
PRESC
18
42
C263
C204
0.75pF
2.2uF 17
29
31
VSF
C201 C202
100pF 1000pF
C257
100pF
U247
ADP3300
1
ERR
SD
6 3
5V OUT IN
4 5
NR
(SOURCE)
2
C291
0.47uF
L202
2.2uH
L203
2.2uH
C223 C235
0.1uF 2.2uF
C219
0.22uF
L201
2.2uH
C217
C224 2.2uF C218
0.1uF 0.1uF
23
XTAL1
24
XTAL2
8 19
CLK FREFOUT 16.8MHz
41
9
CEX MODOUT
15
MODIN VMULT1
Q210
7 14
DATA VMULT2
12
SFIN VMULT3
1
11
VMULT4
47K
PVREF
48 4.7K
VBPASS AUX1
1 2
AUX2 C260 47K
AUX3
2 100pF
U201
BIAS1 AUX3
10K
3
BIAS2 63A27 AUX4 AUX4
3
37
SFCAP TEST1
38
SFBASE TEST2
PREIN
5V
43
IOUT
45
REFSEL IADAPT
4
CCOMP LOCK LOCK
46
ADAPTSW
28
NC1 SFOUT
16 C213
TP201
NC2 INDMULT
1 100pF 3.3V
25
NC3 WARP
FL201
2.3V
75Z04
C203
4.7uF
6
IN
C207
C215
56pF
GND GND1
NU
1 4
1.5V
R281
C206
NU
330pF
R205
NU
3 OUT FADJ 2
1
5V
C216
NU
Tarjeta de circuito de UHF banda 2, esquemas eléctricos y lista de partes
7.5V
SWB+
C294 C293
100pF 0.47uF
4V_3.3V
U248
LP2980
3 1 C277 C278
100pF 2.2uF
2
GND
Vdda
4 5
3.3V
C220 C279
100pF 2.2uF
MODOUT
C233
R255
0.1uF
4.3K
1 TP202
R256
R231 C234 C232
30
120 0.47uF
.047uF 3.5V@450MHz
9.5V@527MHz
R5
4
C231 R232
0.1uF 620
R233
560
VCTRL
L232
12uH
R204
47K
C238
470pF
3
OUT
C208
CR203 1.6pF
R206
NU
SH201 SH202
SHIELD SHIELD
Y201
OSC_16.8MHZ
NU
SYNTHESIZER TOP SHIELD SYNTHESIZER BOTTOM SHIELD