THN4201 Series
Transition Frequency, fT vs. IC
CCB vs. VCB
0.6
0.55
0.5
22
20
f = 2 GHz
f = 1 MHz
VCE = 3 V
18
16
14
VCE = 1 V
12
10
8
0.45
0.4
6
0
5
10
15
20
25
30
35
0
2
4
6
8
10
IC [mA]
VCB [V]
NF vs. IC
Noise Figure Contours & Constant Gain
f = 1 GHz or 2GHz, VCE = 3 V, IC = 5 mA
VCE = 3 V, IC = parameter, ZS = ZSopt
3
2.5
2
f = 1GHz
ΓOPT=0.224∠96
Fmin =1.05dB
Ga=13dB
=14dB
=15dB
=1.1dB
=1.2dB
3 contour
3contour
f = 2 GHz
1.5
1
f = 2GHz
ΓOPT=0.330∠-166
Fmin =1.45dB
Ga=10dB
=9dB
=8dB
=1.5dB
=1.6dB
3 contour
f = 1 GHz
3contour
0.5
0
5
10
15
20
25
30
IC [mA]
March-2006
Rev 1.0
www.tachyonics.co.kr
- 5/12 -
TI [ TEXAS INSTRUMENTS ]
