Motorola HT1250-LS+ - Figure 5-23. 700 Mhz Frequency Synthesizer Schematic Diagram

Schematic Diagrams, Overlays, and Parts Lists 5-29
2 to 9V in RX mode
-20dBm RX VCO
12.8V (Typical)
3 to 11V in TX mode
Steering Line DC Voltage
-18.5dBm TX VCO
All values above are ’typical’
Measured with HP85024A
High Frequency Probe
4.6V
0.1uF
C222
0.1uF
C207
C245
.022uF
C244
0.1uF
0.47uF
C242
L202
2.2uH
C203C201
56pF2.2uF
2.2uF
C204
68pF
56K
C227
R207
R208
12K
C232
C231
10uF
R215
330
68pF
68pF
C235
C224
10uF
L203
6.8nH
.047uF
C241
C225
0.1uF
1.3K
R214
R213
120
VOUT
7.5VDC
5V
U203
2
GND
4
NC ON_OFF*
3
1
VIN
5
10uF
LP2980
2.2uF
C215
C217
C216
68pF
C234
1.2pF
2
1 1
TP202
1
1
GND
5
IN
2
NR
4
OUT
3
SD
TP201
AUX4
ADP3300
U202
6
ERR
VSF
VCTRL
R5
PRESC
CLK
CSX
LOCK
16.8MHz
5V
Vdda
MODIN
DATA
3.9K
SWB+
R211
R212
33
C208
0.1uF
0.1uF
NU
C221
R202
33K
0
R201
R204
33K
C226
22pF
0.1uF
C209
22pF
150
0.1uF
R205
150150
R206
150
0.1uF
0.1uF
100
100
C210
C214
R203
.01uF
.01uF
C233
2.2uF
0.1uF
C220
VMULT4
13
VRO
WARP
25
23
XTAL1
24
XTAL2
2.2uF
C219
SFOUT
37
TEST1
38
TEST2
21
VBPASS
47
VCP
15
VMULT1
14
VMULT2
VMULT3
12
11
PREIN
33
PRE_GND
34
PRE_VDD
35
PVREF
18
REFSEL
27
SFBASE
26
SFCAP
30
SFIN
28
LOCK
10
MODIN
41
MODOUT
17
NC1
29
NC2
31
NC3
44
PD_GND
5
PD_VDD
32
7
DATA
6
DGND
36
DVDD
19
FREFOUT
45
IADAPT
16
INDMULT
43
IOUT
4
AUX2
2
AUX3
3
AUX4
20
AVDD
40
BIAS1
39
BIAS2
CCOMP
42
9
CEX
8
CLK
U201
63A27
46
ADAPTSW
22
AGND
48
AUX1
1
68pF
C236
C228
68pF
68pF
C230
100
R209
.01uF
1
VCON
Vdda
C237
16.8MHz
2
GND
3
OUT
VCC
4
470pF
C243
Y200
45J68
12uH
L204
C205
NC
68pF
C251
68pF
C202
68pF
C247
NU
2
5
3
68pF
C218
Q201
4
C250
68pF
2.2uH
L201
2.2uF
C206
C229
C246
NU
68pF
68pF
C211
C239
K3
3
.01uF
.01uF
A1
6
A2
5
A3
4
K1
1
K2
2
CR202
C213
.01uF
.01uF
C212
.01uF
K2
3
K3
.01uF
CR201
A1
6
A2
5
A3
4
1
K1
2
68pF
C240
R210 47K
4
2
5
3
AUX3_5V
10uF
Q202
C223
0.1uF
C238
68pF68pF
C529 C531
Figure 5-23. 700 MHz Frequency Synthesizer Schematic Diagram