BFR380F_13 Datasheet, PDF (7/10 Pages) Infineon Technologies AG – High linearity low noise driver amplifier

Minimum noise figure NF_min = ƒ(I_C)
V_CE = 3V, Z_S = Z_Sopt
Noise figure F = ƒ(I_C)
V_CE = 3V, f = 1.8 GHz
BFR380F
3.5
3
2.5
2
1.5
f = 4GHz
1
f = 3GHz
f = 2.4GHz
f = 1.8GHz
0.5
f = 0.9GHz
0
0
10 20 30 40 50 60 70 80
I [mA]
c
Minimum noise figure NF_min = ƒ(f)
V_CE = 3V, Z_S = Z_Sopt
4
3.5
3
2.5
2
1.5
Z = 50Ω
S
1
Z =Z
S
Sopt
0.5
0
0
10 20 30 40 50 60 70 80
I [mA]
c
Source impedance for min.
noise figure vs. frequency
V_CE = 3 V, I_C = 8.0mA/40.0mA
7
2013-11-06