Sintetizador Y Vco Vhf2 (146-174 Mhz) (Hoja 1 De 2) - Motorola EM200 Serie Manual De Servicio

4-10
5V
5V
L217
390nH
C2000
2.2uF
3V
3V
L200
390nH
C2005
2.2uF
SPI_CLK
SYNTH_CS
MOD_IN
SPI_MOSI
C2046 C2048 C2047 C2045
470p 470p 470p 470p
SH200
SHIELD
1

Sintetizador y VCO VHF2 (146-174 MHz) (hoja 1 de 2)

C2015 C2034
0.1uF 1n
C2023 C2035
10n 1n
23
XTAL1
24
XTAL2
8 19
CLK FREFOUT
9 41
CEX MODOUT
10
15
MODIN VMULT1
7 14
DATA VMULT2
30 12
SFIN VMULT3
U200 11
VMULT4
35 FRACN_63A27
PVREF
21 48
VBPASS AUX1
1
AUX2
40 2
BIAS1 AUX3
39 3
BIAS2 AUX4
26 37
SFCAP TEST1
27 38
SFBASE TEST2
32
PREIN
43
IOUT
18 45
C2006 REFSEL IADAPT
42 4
CCOMP LOCK
2.2uF 46
ADAPTSW
17 28
NC1 SFOUT
29 16
NC2 INDMULT
31 25
NC3 WARP
R200 R206
200.K 150.K
V_SF
C2052
100p
C2033 C2014 C2002
1n 0.1uF 4.7uF
L210
100nH
R208
100.K
C2068
6.8p
C2067
8.2p
Esquema eléctrico de la tarjeta de circuito impreso 8488977U01 del radio VHF 1-25 W banda 2 (rev. P8)
R225
150.
C2055
22p
C2024
10n
R226
150.
C2027
10n
C2036
1n
16.8MHZ
R229
VCO_MOD DNP
100.
C2049
470p
SYNTH_LOCK
C2050
470p
TP201
1
TEST_POINT
R209
3V
100.K
DNP
C2051 C2054
220p 62.0p R205
5V 0.
R207
C2020 DNP
150.K
100n
R204
0.
C2017
0.1uF
4
VCC
DNP Y200
DNP
3 1
45J68
OUT VCON
DNP
C2053 R210
16.8MHz
100p 100.K
GND
Y201
14R06 2
FREQ
1 3
IN OUT
C2072
D202
2.7p
C2026
10n
K3 A3
K2 A2
K1 A1
R228
C2025
D200
100.
10n
C2016 C2004
0.1uF 2.2uF
D201
K3 A3
K2 A2
NC K1 A1 NC
R202
0.
DNP
C2001 C2013
4.7uF 0.1uF
L205
R224
1uH
1.5K
C2074 R217
C2028
100.n 1.3K
2.2n
R234
39.
1
TP200
TEST_POINT
C2080 C2079 C2078 C2077
C2075
100.n 100.n 100.n 100.n 100.n