MRF947 Motorola, MRF947 Datasheet - Page 15

• Manufacturer Part Number: MRF947
• Description: High-Frequency Transistors
• Manufacturer: Motorola

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(GHz)
V CE = 6 V
I C = 5 mA
MOTOROLA RF DEVICE DATA
1.0
f
1.5 dB 0.33
OPT
AREA OF INSTABILITY
NF
Figure 23. MRF947 Series Constant Gain and
INPUT
o
–j0.2
j0.2
77
R N
14
V CE = 1 V
I C = 0.5 mA
(GHz)
1.0
Noise Figure Contours
–j0.5
f
0.87
0.2
K
j0.5
1.95 dB 0.59
OPT
NF
AREA OF INSTABILITY
Figure 25. MRF947 Series Constant Gain and Noise Figure Contours
16
0.5
NF OPT
15
f = 1 GHz
MS
14
72
INPUT
–j1
j1
1
13
1.5
R N
30
–j0.2
j0.2
0.50
K
2.0
3.0
2
4.0
–j0.5
0.2
j0.5
5.0
j2
–j2
8.4
0.5
f = 1 GHz
V CE = 6 V
I C = 5 mA
(GHz)
OUTPUT
8 7
1.5
–j1
f
j1
1
1.75 dB 0.26
OPT
INPUT
NF
AREA OF INSTABILITY
2
Figure 24. MRF947 Series Constant Gain and
2
2.1
2.3
–j0.2
j0.2
o
141
j2
–j2
R N
15
–j0.5
Noise Figure Contours
MMBR941 MRF947 MRF9411 SERIES
j0.5
0.2
OUTPUT
0.96
10
13
K
11
12
0.5
f = 1.5 GHz
1.75
2.0
3.0
–j1
j1
4.0
1
5.0
2
j2
–j2
OUTPUT
2–15