THN4301U Datasheet, PDF (5/15 Pages) AUK corp – SiGe NPN Transistor

Transition Frequency : f_T vs. I_C
20
f^{f =}=^{2 GHz}
18 _2GH
16
14
12
10
VVC_CE_E==33VV
V_CE = 2 V
V_VCEC=_E=1₂V_V
8
VCE=1V
6
4
0 10 20 30 40 50 60 70
I_C [mA]
THN4301 Series
C_CB vs. V_CB
0.8
0.75
f = 1 MHz
0.7
0.65
0.6
0.55
0.5
0
3
6
9
12
15
18
V_CB [V]
NF vs. I_C
V_CE = 3 V, I_C = parameter, Z_S = Z_Sopt
3
2.5
2
f = 2GHz
f = 2 GHz
1.5
1
f = 1GHz
f = 1 GHz
0.5
0
5
10 15 20 25 30
I_C [mA]
Noise Figure Contours & Constant Gain
f = 1 GHz, 2 GHz, V_CE = 3 V, I_C = 5 mA
Output Stable
G_A = 12dB
= 13dB
= 14dB
3 contour
G_A = 9.5dB
= 8.5dB
= 7.5dB
3 contour
Input Stable
f = 1 GHz
Γ_OPT = 0.285∠
118
NF = 1.05dB
= 1.1dB
= 1.2dB
3 contour
f = 2 GHz
Γ_OPT = 0.464∠-175
NF = 1.45dB
= 1.5dB
= 1.6dB
3 contour
5