MRF166C Datasheet, PDF (3/6 Pages) Motorola, Inc – MOSFET BROADBAND RF POWER FETs

R3
C4
+
C13
–
R2
D1
C8
R4
RF INPUT
Z1
C1
Z2 L1
C2
C9
R1
Z3 L2
Z4
C3
RFC1
C10
C11
RFC2
Z5
D.U.T.
Z6
C5
VDD = 28 V
+
C12
–
+
Vdc
–
Z7 ^{RF OUTPUT}
C7
C6
C1, C7 — 270 pF Chip Capacitor
C2, C6 — Johanson Trimmer Capacitor, 2 – 20 pF
C3 — 21 pF Mini Unelco
C4, C8, C9 — 0.01 µF
C5 — 18 pF Mini Unelco
C10, C11 — 680 pF Feed Through
C12, C13 — 50 µF, 50 V
D1 — 1N5925A Motorola Zener
Board Material — Teflon fiberglass
2 oz. Copper clad both sides, ε_r = 2.55
0.060″ Dielectric Thickness
L1 — #18 AWG, 2 Turns, 0.25″ ID
0.15″ Wide
L2 — #18 AWG Hairpin 0.7″ long, bend into hairpin
RFC1 — Ferroxcube VK200–19/4B
RFC2 — 18 Turns #18 AWG Enameled, 0.3″ ID
R1 — 220 Ω 1/2 Watt
R2 — 1.8 kΩ 1/4 Watt
R3 — 10 kΩ, 10 Turns Bourns
R4 — 10 k 1/4 Watt
Z1 — Microstrip Line 0.150″ wide, 0.420″ long
Z2 — Microstrip Line 0.150″ wide, 0.350″ long
Z3 — Microstrip Line 0.150″ wide, 0.350″ long
Z4 — Microstrip Line 0.150″ wide, 0.450″ long
Z5 — Microstrip Line 0.150″ wide, 1.1″ long
Z6 — Microstrip Line 0.150″ wide, 0.650″ long
Z7 — Microstrip Line 0.150″ wide, 0.200″ long
Figure 1. MRF166C 400 MHz Test Circuit
TYPICAL CHARACTERISTICS
100
10
50
Coss
20
Ciss
10
1
5
Crss
VGS = 0 V
2
f = 1 MHz
1
0.1
0
5
10
15
20
25
0
VDS, DRAIN–SOURCE VOLTAGE (VOLTS)
Figure 2. Capacitance versus Drain–Source Voltage
TC = 25°C
10
100
VDS, DRAIN–SOURCE VOLTAGE (VOLTS)
Figure 3. DC Safe Operating Area
MOTOROLA RF DEVICE DATA
MRF166C
3