KESRX01
C17
C18
XTAL1
-15 V
IF O/P
IC1
+15 V
RLY7
IF O/P SELECT
1
2
C8
R65
3
C9
Vcc 1
C16
4
5
6
7
8
C2
C1
L1
9
KESRX01
IFDC1 XTAL2 24
IFDC2 XTAL1 23
IF2
IF1
Vcc
Mix IP
DF2
DF1
DF0
LF
22
21
20
19
NC
NC
C5
C4
DF2 O/P
RSSI O/P Select
RSSI O/P
C19
C20
RLY9
PLL SELECT
Vcc 1
SELECT ATTENUATOR
RF Input
0 dB
20 dB
RLY 2
C14
L2
C50
RF OP Vee 2 18
Vee RF
VARAC
RF IN VCO2
VCO1
17
16
15
C13
L4
C11
R8
VAR R9
13
VCO EXTERNAL
VCO OVERDRIVE
10 DSN
11 Data O/P PD 14
12 Peak Vee 1 11
R55
C24
Data O/P
Power Down
R60
C12
R14
Fig. 6 KESRX01 Test circuit at 434MHz (peak detector slice mode)
Component
C1
C2
C4, C5
C8
C9
C11, C13
C12
C14
C16
C17, C18
C19
C20
C24
C50
R8
R9
R14
R55
R60
R65
L1
L2
L4
VAR
XTAL
Function
Input Matching circuit
Input Matching circuit
XTAL feedback capacitors
DC decoupling capacitor
IF filter high pass
VCO decouple
PLL loop filter
V
CC
decoupling capacitor
RF amplifier load
IF amplifier decouple
Data filter
Data filter
Data slicer time constant
V
CC
decoupling capacitor
Varactor bias
PLL loop filter
Data slicer threshold circuit
Data slicer threshold circuit
Varactor bias
IC1 bias
RF amplifier input matching
RF amplifier/Mixer matching network
VCOtank circuit
VCO tank circuit varactor
Reference frequency
Value
4.7
1
100
470
220
33
560
1
56
100
150
220
1
100
47
18
1
4.3
47
1
47
27
39
SMV-1104-35
6.775
Units
pF
pF
pF
pF
pF
pF
pF
µF
pF
nF
pF
pF
µF
pF
KΩ
KΩ
MΩ
KΩ
KΩ
MΩ
nH
nH
nH
4 to 11pF
MHz
Table 1. Component values for test circuit
6
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
