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BLF177CR,112

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
NXP Semiconductors Product specification
HF/VHF power MOS transistor BLF177
handbook, halfpage
0
10
5
0
−5
10 20 30
MGP099
Z
i
(Ω)
r
i
x
i
f
(MHz)
Fig.14 Input impedance as a function of frequency
(series components); typical values.
Class-AB operation; V
DS
= 50 V; I
DQ
= 0.7 A;
P
L
= 150 W (PEP); R
GS
= 6.25 Ω; R
L
= 6.25 Ω.
handbook, halfpage
0
30
20
10
0
10 20 30
MGP100
G
p
(dB)
f
(MHz)
Fig.15 Power gain as a function of frequency;
typical values.
Class-AB operation; V
DS
= 50 V; I
DQ
= 0.7 A;
P
L
= 150 W (PEP); R
GS
= 6.25 Ω; R
L
= 6.25 Ω.
APPLICATION INFORMATION FOR CLASS-B OPERATION
RF performance in CW operation in a common source class-B test circuit (see Fig.19).
T
h
=25°C; R
th mb-h
= 0.2 K/W; R
GS
= 15.8 Ω unless otherwise specified.
MODE OF
OPERATION
f
(MHz)
V
DS
(V)
I
DQ
(A)
P
L
(W)
G
p
(dB)
η
D
(%)
CW, class-B 108 50 0.1 150 typ. 19 typ. 70
Rev. 06 - 24 January 2007
10 of 19
NXP Semiconductors Product specification
HF/VHF power MOS transistor BLF177
handbook, halfpage
0 100 200
30
10
0
20
MGP101
G
p
(dB)
P
L
(W)
Fig.16 Power gain as a function of load power;
typical values.
Class-B operation; V
DS
= 50 V; I
DQ
= 100 mA;
R
GS
= 15.8 Ω; f = 108 MHz.
handbook, halfpage
0
100
50
0
100 200
MGP102
η
D
(%)
P
L
(W)
Fig.17 Two tone efficiency as a function of load
power; typical values.
Class-B operation; V
DS
= 50 V; I
DQ
= 100 mA;
R
GS
= 15.8 Ω; f = 108 MHz.
handbook, halfpage
012 4
200
0
100
3
MGP103
P
L
(W)
P
IN
(W)
Fig.18 Load power as a function of input power;
typical values.
Class-B operation; V
DS
= 50 V; I
DQ
= 100 mA;
R
GS
= 15.8 Ω; f = 108 MHz.
Rev. 06 - 24 January 2007
11 of 19
NXP Semiconductors Product specification
HF/VHF power MOS transistor BLF177
handbook, full pagewidth
MGP104
input
50 Ω
C1
C7
C6
C11
C19
L1
L3
D.U.T.
BLF177
L4
L8
L5
R2R1
R3
R5
R4
C2
C5
C3
C4
C16
C14
C13
C15
C17
+V
D
L7
C18
L6
R6
C12
C9
C10
output
50 Ω
L2
C8
Fig.19 Test circuit for class-B operation at 108 MHz.
Rev. 06 - 24 January 2007
12 of 19
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

BLF177CR,112

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RF FET NCHA 125V SOT121B
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