|
MRF847 Datasheet, PDF (2/4 Pages) Motorola, Inc – RF POWER TRANSISTOR NPN SILICON | |||
|
◁ |
ELECTRICAL CHARACTERISTICS â continued (TC = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
ON CHARACTERISTICS
DC Current Gain
(IC = 2.0 Adc, VCE = 5.0 Vdc)
hFE
40
65
120
â
DYNAMIC CHARACTERISTICS
Output Capacitance
(VCB = 12.5 Vdc, IE = 0, f = 1.0 MHz)
Cob
â
75
90
pF
FUNCTIONAL TESTS
CommonâBase Amplifier Power Gain
(VCC = 12.5 Vdc, Pout = 45 W, f = 870 MHz)
GPB
4.5
5.5
â
dB
Collector Efficiency
(VCC = 12.5 Vdc, Pout = 45 W, f = 870 MHz)
ηc
60
68
â
%
Load Mismatch
(VCC = 15.5 Vdc, Pin = 16 W, f = 870 MHz,
VSWR = 10:1, All Phase Angles)
Ï
No Degradation in Output Power
L3
B
Vre PORT
C8
C9
+
C10
50 â¦
ÃÃÃÃTÃÃÃÃL1 C1 ÃÃÃÃÃÃÃÃTLÃÃÃÃ2 ÃÃÃÃL1
SOCKET ASSY.
C3
C4
D.U.T.
C2
C5
L4
B
+12.5 V
+
C12
C13
C11
ÃÃÃÃL2 ÃÃÃÃTLÃÃÃÃ3 ÃÃÃÃC7 ÃÃÃÃTÃÃÃÃL4
50 â¦
C6
C1 â 51 pF, 100 mil Chip Capacitor
C2 â 12 pF, MiniâUnderwood
C3 â 11 pF, MiniâUnderwood
C4, C5 â 21 pF, MiniâUnderwood
C6 â 0.08 â 8.0 pF Johansen Gigatrim
C7 â 47 pF, 100 mil Chip Capacitor
C8, C13 â 10 µF, 25 WV Electrolytic Capacitor
C9, C12 â 1000 pF Unelco J101
C10, C11 â 91 pF MiniâUnderwood
L1, L2 â 4 Turns #18 Enameled, 200 mil ID
L3, L4 â 12 Turns #22 Enameled, Wound Over 10 ⦠Resistor
TL1, TL4 â 50 ⦠Microstrip Line
TL2 â Microstrip (Zo = 38 ohms, λ/4 @ 838 MHz)
TL3 â Microstrip (Zo = 28 ohms, λ/4 @ 838 MHz)
Board Material â 0.032â³ GlassâTeflon, 2 oz. cu. clad, εr = 2.56
B â Ferrite Bead, Ferroxcube 56â590â65â3B
Figure 1. 806 â 870 MHz Broadband Test Circuit
MRF847
2
MOTOROLA RF DEVICE DATA
|
▷ |