MGCT04
Preliminary Information
1900MHz
power amplifier
1GHz LO
1900MHz
SAW filter
1900MHz
matching
network
Vcc
CONTROL
MICROPROCESSOR
2GHz LO
1900MHz
diplexer
AGC
900MHz
diplexer
900MHz
power amplifier
900MHz
SAW filter
Oscillator
control
900MHz
matching
network
1
28
22
21
External
VHF oscillator
MGCT04
7
8
15
14
VHF SYNTHESISER
Oscillator
out
MIXED SIGNAL
INTERFACE
CIRCUIT
Oscillator
bias
Vee
Figure 4 - Typical application circuit
V
CC
50Ω SAW
FILTER
50Ω SAW
FILTER
PIN 27
L5
5.6n
C4
1.2p
L4
5.6n
L3
3.9n
PIN 26
C2
1.2p
C4
1.5p
C2
100p
L5
22n
L4
22n
V
CC
C3
1.2p
C1
1.2p
L1
15n
L2
15n
C3
1.5p
C1
100p
L1
68n
L3
22n
L2
68n
PIN 3
PIN 2
NOTE
L1 and L2 are required to provide a DC feed to the output pins
and do not form part of the matching network
NOTE
L1 and L2 are required to provide a DC feed to the output pins
and do not form part of the matching network
Figure 5 - Typical 1900MHz output matching
network
Figure 6 - Typical 900MHz output matching
network
8
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
