MMBR941LT1 Datasheet, PDF (13/17 Pages) Motorola, Inc – NPN Silicon Low Noise, High-Frequency Transistors

+ j0.5
+ j0.2
– j0.2
– j0.5
+ j1
+ j2
11.2
11
10
1.6
1.8
2
VCE = 1.0 V
IC = 0.5 mA
— AREA OF INSTABILITY
f (GHz) NF OPT (dB) ΓMS NF OPT RN
K
0.5
1.60
0.70 ∠ 35°
40
0.22
– j2
– j1
Figure 19. MRF9411LT1 Constant Gain and Noise Figure Contours
(f = 0.5 GHz)
+ j1
+ j0.5
+ j2
2
+ j0.2
2.1
8.6
2.3
8
7
– j0.2
VCE = 1.0 V
IC = 0.5 mA
— AREA OF INSTABILITY
f (GHz) NF OPT (dB) ΓMS NF OPT RN
K
1.0
1.95
0.55 ∠ 69°
30
0.39
– j0.5
– j2
– j1
Figure 20. MRF9411LT1 Constant Gain and Noise Figure Contours
(f = 1.0 GHz)
MOTOROLA RF DEVICE DATA
MMBR941 MRF947 MRF9411 SERIES
2–13