Philips Semiconductors
Product specification
HF/VHF power transistor
BLW96
APPLICATION INFORMATION
R.F. performance in s.s.b. class-AB operation (linear power amplifier)
VCE = 50 V; Th = 25 °C; f1 = 28,000 MHz; f2 = 28,001 MHz
(1)
(1)
OUTPUT POWER
Gp
ηdt (%)
IC (A)
d3
d5
IC(ZS)
W
dB
at 200 W (P.E.P.)
dB
dB
A
25 to 200 (P.E.P.)
> 13,5
> 40
< 5,0
< −30
< −30
0,1
C10
C11
handbook, full pagewidth
L4
C1
C2
50 Ω
L1
R1
50 Ω
T.U.T.
C12
C13
C6
C14
L2
R2
L3
C4
C3
C5
C7
temperature
C8
C9
compensated bias
(R < 0.1 Ω)
i
+V
CC
MGP691
Fig.8 Test circuit; s.s.b. class-AB.
List of components:
C1 = C4 = C10 = C14 = 100 pF film dielectric trimmer
C2 = 27 pF ceramic capacitor (500 V)
C3 = 270 pF polysterene capacitor (630 V)
C5 = C7 = C8 = 220 nF multilayer ceramic chip capacitor
C6 = 27 pF multilayer ceramic chip capacitor (500 V; ATC(2))
C9 = 47 µF/63 V electrolytic capacitor
C11 = 2 × 36 pF multilayer ceramic chip capacitors (500 V; ATC(2)) in parallel
C12 = 2 × 43 pF multilayer ceramic chip capacitors (500 V; ATC(2)) in parallel
C13 = 43 pF multilayer ceramic chip capacitor (500 V; ATC(2))
L1 = 88 nH; 3 turns Cu wire (1,0 mm); int. dia. 9,0 mm; length 6,1 mm; leads 2 × 5 mm
L2 = Ferroxcube wide-band h.f. choke, grade 3B (cat. no. 4312 020 36640)
L3 = 150 nH; 5 turns Cu wire (2,0 mm); int. dia. 10,0 mm; length 18,7 mm; leads 2 × 5 mm
L4 = 197 nH; 5 turns Cu wire (2,0 mm); int. dia. 12,0 mm; length 18,6 mm; leads 2 × 5 mm
R1 = 0,66 Ω; parallel connection of 5 × 3,3 Ω metal film resistors (PR37; ± 5%; 1,6 W each)
R2 = 27 Ω carbon resistor (± 5%; 0,5 W)
Notes
1. Stated intermodulation distortion figures are referred to the according level of either of the equal amplified tones.
Relative to the according peak envelope powers these figures should be increased by 6 dB.
2. ATC means American Technical Ceramics.
August 1986
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