MRF897R 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
10.5
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)
30
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
(VCC = 26 Vdc, Pout = 30 Watts (PEP), Icq = 125 mA, f1 = 900 MHz,
ψ
f2 = 900.1 MHz, Load VSWR = 5:1 (all phase angles))
No Degradation in Output Power
R1
R3
R5
VBB
Q1
+
C6
L3
C21
C18
L5
+
+
C11
C13
VCC
VB
B3
C4
C25
B1
C16
L7
COAX 1
C8
L1
BALUN 2
INPUT
VBB
TL2
TL1
C1
BALUN 1
VB
R2
+
C7
TL3
DUT
TL5
C2
C10
TL6
C3
TL4
L2
B2
L4
C26
R4
C9
C17
C5
C22
TL9
TL7
C23
C15 C20
TL11
C24
TL8
TL10
L8
COAX 2
B4
L6
C19
R6
+
+
C12 C14
OUTPUT
VCC
B1, B2, B3, B4 — Short Ferrite Bead, Fair Rite #2743019447
C1 — 0.8 – 8.0 pF Var Capacitor, Johansen Gigatrim
C2, C3, C23, C24 — 43 pF, 100 mil, ATC Chip Capacitor
C4, C5, C21, C22 — 1000 pF, 100 mil, ATC Chip Capacitor
C6, C7, C11, C12 — 10 µF, Electrolytic Capacitor, Panasonic
C8, C9, C16, C17 — 100 pF, 100 mil, ATC Chip Capacitor
C10 — 9.1 pF, 50 mil, ATC Chip Capacitor
C13 — 250 µF Electrolytic Capacitor, Mallory
C14, C18, C19, C25 — 0.1 µF, Chip Capacitor, Kemet
C15 — 1.1 pF, 50 mil, ATC Chip Capacitor
C20 — 6.8 pF, 100 mil, ATC Chip Capacitor
L1, L2, L3, L4, L5, L6, L7, L8 — 5 Turns 20 AWG,
IDIA 0.126″ Choke, Taylor Spring 46 nH
N1, N2 — Type N Flange Mount, Omni Spectra 3052–1648–10
Q1 — Bias Transistor BD136 PNP
R1, R12 — 27 Ohm, 2.0 W
R3, R4, R5, R6 — 4.0 x 39 Ohm, 1/8 W, Chips Resistors in
R3, R4, R5, R6 — Parallel, Rohm 390–J
SB1 — 0.15″ x 0.3″ x 0.03″ Cu
TL1 – TL11 — Microstrip Line, See Photomaster
Balun1, Balun2, Coax 1, Coax 2 — 2.20″ 50 Ohm, 0.086″ o.d.
Balun1, Balun2, Coax 1, Coax 2 — semi–rigid coax, Micro Coax
Balun1, Balun2, Coax 1, Coax 2 — UT–85–M17
Circuit Board — 1/32″ Glass Teflon, Arlon GX–0300–55–22,
Circuit Board — ε_r = 2.55
Figure 1. 840 – 900 MHz Test Circuit Schematic
MRF897R
2
MOTOROLA RF DEVICE DATA