MRF897 Datasheet, PDF (2/6 Pages) Motorola, Inc – RF POWER TRANSISTOR NPN SILICON

ELECTRICAL CHARACTERISTICS — continued (TC = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
FUNCTIONAL CHARACTERISTICS
Common–Emitter Amplifier Power Gain
Gpe
10.0
12.0
—
dB
(VCC = 24 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz)
Collector Efficiency
η
(VCC = 24 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz)
35
38
—
%
Intermodulation Distortion
IMD
—
–37
–30
dBc
(VCC = 24 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz)
Output Mismatch Stress
ψ
(VCC = 26 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
f2 = 900.1 MHz, Load VSWR = 5:1 (all phase angles))
No Degradation in Output Power
Before and After Test
R1
VBB
COAX 1
TL2
INPUT
TL1
C1
BALUN 1
VBB
Q1
C4
TL3
C2
C3
TL4
C5
R2
Q2
C11 C13 C18
+
+
VCC
+
R3
L3 ^C6
L5 R5
C21
B1
C8
L1
TL5
C10
B3
C16
TL9
L7
TL7
C15
C23
C20
BALUN 2
OUTPUT
TL11
TL6
D.U.T.
L2
C24
TL8
L8
B2
C9
R4 _L4
+
C7
C17
L6
TL10
B4
COAX 2
R6
C22
VCC
+
+
C12 C14
C19
B1, B2, B3, B4 — Ferrite Bead, Fair Rite #2743019447
C1 — 0.8 – 8.0 pF Trimmer Capacitor, Johanson
C2, C3, C23, C24 — 43 pF, 100 mil, ATC Chip Capacitor
C4, C5, C18, C19, C21, C22 — 820 pF, 100 mil, Chip Capacitor, Kemet
C6, C7, C11, C12 — 10 µF, Lytic Capacitor, Panasonic
C8, C9, C16, C17 — 100 pF, 100 mil, Chip Capacitor, Murata Erie
C10 — 13 pF, 50 mil, ATC Chip Capacitor
C13, C14 — 250 µF Lytic Capacitor, Mallory
C15 — 1.1 pF, 50 mil, ATC Chip Capacitor
C20 — 6.8 pF, 100 mil, ATC Chip Capacitor
L1, L2, L3, L4, L5, L6 — 5 Turns 20 AWG, IDIA 0.126″ choke
N1, N2 — Type N Flange Mount, Omni Spectra 3052–1648–10
Q1 — Bias Transistor BD136 PNP
R1, R12 — 39 Ohm, 2.0 W
R3, R4, R5, R6 — 4.0 x 39 Ohm, 1/8 W, Chips in Parallel,
R3, R4, R5, R6 — Rohm 390–J
TL1 – TL11 — See Photomaster
Balun1, Balun2, Coax 1, Coax 2 — 2.20″ 50 Ohm, 0.088″ o.d.
Balun1, Balun2, Coax 1, Coax 2 — semi–rigid coax, Micro Coax
Balun1, Balun2, Coax 1, Coax 2 — UT–85–M17
Board — 1/32″ Glass Teflon, Arlon GX–0300–55–22, ε_r = 2.55
Figure 1. MRF897 Broadband Test Circuit
MRF897
2
MOTOROLA RF DEVICE DATA