2SC4197 Datasheet, PDF (8/10 Pages) Hitachi Semiconductor – Silicon NPN Epitaxial

2SC4197
Conversion Gain and Noise Figure Test Circuit
f_osc = 930 MHz
(–5 dBm)
L₁
V_Tin
V_BB
1k
2.2 n
2.2 n
L₄
L₂
8p
D.U.T.
V_CC
2.2 n
1k
220 µ
f_out = 30 MHz
L₅
100 p 100 p ^RL ^{= 50 Ω}
2.2 n
D₁
L₃
100
47 p
D₁
47 k
f_in = 900 MHz
2.2 n
Unit R : Ω
C:F
L:H
V_Tout
D₁ : 1 SV 188
L₁ : φ 1 mm Enameled Copper Wire.
25
10
L₂ : φ 1 mm Enameled Copper Wire.
L₃ : φ 1 mm Enameled Copper Wire.
15
30
Unit : mm
L₄ : φ 0.5 mm Enameled Copper Wire 1 Turn Inside Dia 3 mm
L₅ : Inside Dia 5 mm Bobin, φ 0.2 mm Enameled Copper Wire 20 Turns with Ferrite Core.
Rev.3.00 Aug 10, 2005 page 8 of 9