MC1648
Output
R
+9.0V
0.01µF
+5.0V
C1
L1
CC1
V
14
1
V
CC2
10
12
Bias Point
L2* Tank
3
C3
7
V
8
V
5
AGC
EE1
EE2
C2
1.2k
+5.0V
1.0µF
0.1µF
1.0µF
* Q
≥
100
L
Figure 12. Circuit Used for Collector Output Operation
7
6
5
4
3
2
1
14
12
10
8
6
4
2
0
0
10
100
1000
10,000
10
100
1000
10,000
TOTAL COLLECTOR LOAD (OHMS)
TOTAL COLLECTOR LOAD (OHMS)
See test circuit, Figure 12, f = 100MHz
C3 = 3.0–35pF
See test circuit, Figure 12, f = 10MHz
C3 = 470pF
Collector Tank
Collector Tank
L1 = 0.22µH
C1 = 1.0–7.0pF
L1 = 2.7µH
C1 = 24–200pF
R = 50Ω–10kΩ
R = 50Ω–10kΩ
R
of L1 and C1 = 11kΩ @ 100MHz Resonance
R of L1 and C1 = 6.8kΩ @ 10MHz Resonance
P
P
Oscillator Tank
L2 = 4 turns #20 AWG 3/16” ID
C2 = 1.0–7.0pF
Oscillator Tank
L2 = 2.7µH
C2 = 16–150pF
Figure 13. Power Output versus Collector Load
Figure 14. Power Output versus Collector Load
MOTOROLA
8
HIPERCOMM
BR1334 — Rev 4
MOTOROLA [ MOTOROLA ]
