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| BB504C Datasheet, PDF (3/10 Pages) Hitachi Semiconductor – Build in Biasing Circuit MOS FET IC VHF&UHF RF Amplifier | |||
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BB504C
Test Circuits
⢠DC Biasing Circuit for Operating Characteristics Items (ID(op), |yfs|, Ciss, Coss, Crss, NF, PG)
VG2
Gate 2
RG
VG1
Gate 1
Drain
A
ID
Source
⢠200MHz Power Gain, Noise Figure Test Circuit
VT
1000p
VG2
1000p
VT
1000p
Input(50â¦)
1000p
1000p 47k
47k
BBFET
L1
36p
1000p
1SV70
RG
120k
47k
L2
1000p
Output(50â¦)
10p max
RFC
1SV70
1000p
VD = VG1
L1 : Φ1mm Enameled Copper Wire,Inside dia 10mm, 2Turns
L2 : Φ1mm Enameled Copper Wire,Inside dia 10mm, 2Turns
RFC : Φ1mm Enameled Copper Wire,Inside dia 5mm, 2Turns
Unit Resistance (â¦)
Capacitance (F)
Rev.6.00 Aug 10, 2005 page 3 of 9
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