C3128 データシートの表示（PDF） - Hitachi -> Renesas Electronics
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C3128 Datasheet PDF : 10 Pages
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2SC3127, 2SC3128, 2SC3510
Input and Output Reflection Coefficient vs. Frequency
0
S22
–5
–10
–15
–20
0
S11
VCC = 12 V, IC = 20 mA
Input Power Level
–50 dBm
250
500
750
Frequency f (MHz)
1,000
Vhf to Uhf Wide Band Amp. Circuit
50 p 470
Input 50 p 50 p
5p
Rg = 50 Ω
L1
L2
2.4 k
110
1.2 p 4,400 p
2,200 p
T1
1,200 p
Output
2.5 p
4,400 p
RL = 50 Ω
VBB
VCC
Parts Spcecification
L1 : Inside dia φ3.0 mm, φ0.4 mm Polyurethane Coated Copper wire 12 Turns.
L2 : Inside dia φ3.5 mm, φ0.5 mm Polyurethane Coated Copper wire 9 Turns.
T1 : Balance wind used Ferrite Core
Outside dia φ4.0 mm, Inside dia φ2.0 mm
φ0.1 mm Polyurethane Coated Copper wire 3 Turns.
Ratio Input to Output is 2 : 1
Unit R : Ω
C:F
8
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