Freescale Semiconductor, Inc.
V
I
C
= 6 V
= 5 mA
V
= 6 V
CE
CE
I
= 5 mA
C
f
NF
(GHz) OPT
1.0 1.5 dB 0.33 77° 14 0.87
f
NF
R
K
R
K
Γ
(GHz) OPT
Γ
o
N
N
o
j1
j1
1.5 1.75 dB 0.26 141° 15 0.96
OUTPUT
j2
j0.5
j2
j0.5
OUTPUT
j0.2
INPUT
j0.2
1.5
INPUT
13
1.75
16
2.0
12
11
10
15
2.0
3.0
4.0
3.0
14
13
–j0.2
–j0.2
4.0
5.0
5.0
–j0.5
AREA OF INSTABILITY
0.2
–j0.5
–j2
–j2
AREA OF INSTABILITY
0.2
–j1
–j1
0.5
1
2
0.5
1
2
f = 1.5 GHz
f = 1 GHz
Figure 19. MRF947 Series Constant Gain and
Noise Figure Contours
Figure 18. MRF947 Series Constant Gain and
Noise Figure Contours
V
I
C
= 1 V
= 0.5 mA
CE
f
NF
ΓMS
NF OPT
j1
R
K
(GHz) OPT
N
1.0 1.95 dB 0.59 72° 30 0.50
j2
j0.5
OUTPUT
INPUT
j0.2
2
2.1
2.3
8.4
8
7
–j0.2
–j0.5
0.2
–j2
AREA OF INSTABILITY
–j1
1
0.5
2
f = 1 GHz
Figure 20. MRF947 Series Constant Gain and Noise Figure Contours
MMBR941 MRF947 SERIES
12
MOTOROLA RF DEVICE DATA
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Go to: www.freescale.com
MOTOROLA [ MOTOROLA ]
