MRF21125 Datasheet, PDF (4/12 Pages) Motorola, Inc – RF POWER FIELD EFFECT TRANSISTORS

V_{GG R1}
+
B1
R3
+
+
R2 C2 C3 C4
C5
R4
W1
+
C6 C7 C8 C9 C10 C11
V_DD
+
+
C12 C13 C14
RF
INPUT _Z1
Z2 Z3 Z4 Z5
C1
Z6
Z7
Z8 Z9 Z10 Z11 Z12
RF
Z13 ^OUTPUT
C15
DUT
C16
Z1
1.212″ x 0.082″ Microstrip
Z2
0.236″ x 0.082″ Microstrip
Z3
0.086″ x 0.254″ Microstrip
Z4
0.357″ x 0.082″ Microstrip
Z5
0.274″ x 1.030″ Microstrip
Z6
0.466″ x 0.050″ Microstrip
Z7
0.501″ x 0.050″ Microstrip
Z8
0.600″ x 1.056″ Microstrip
Z9
Z10
Z11
Z12
Z13
Raw Board
Material
0.179″ x 0.219″ Microstrip
0.100″ x 0.336″ Microstrip
0.534″ x 0.142″ Microstrip
0.089″ x 0.080″ Microstrip
0.620″ x 0.080″ Microstrip
0.030″ Glass Teflon^, 2 oz Copper,
3″ x 5″ Dimensions,
Arlon GX0300–55–22, ε_r = 2.55
Figure 1. MRF21125 Test Circuit Schematic
Table 1. MRF21125 Test Circuit Component Designations and Values
Designators
Description
B1
C1
C2, C4, C11, C12
C3, C7
C5, C14
Ferrite Bead (Square), Fair Rite #2743019447
9.1 pF Chip Capacitor, B Case, ATC #100B9R1CCA500X
22 µF, 35 V Tantalum Surface Mount Chip Capacitors, Kemet #T491X226K035AS4394
20000 pF Chip Capacitors, B Case, ATC #100B203JCA50X
5.1 pF Chip Capacitors, B Case, ATC #100B5R1CCA500X
C6
100000 pF Chip Capacitor, B Case, ATC #100B104JCA50X
C8
10000 pF Chip Capacitor, B Case, ATC #100B103JCA50X
C9
7.5 pF Chip Capacitor, B Case, ATC #100B7R5CCA500X
C10
1.2 pF Chip Capacitor, B Case, ATC #100B1R2CCA500X
C13
0.1 µF Chip Capacitor, Kemet #CDR33BX104AKWS
C15
16 pF Chip Capacitor, B Case, ATC #100B160KP500X
C16
0.6 – 4.5 pF Variable Capacitor, Johanson Gigatrim #27271SL
R1
1.0 kΩ, 1/8 W Chip Resistor
R2
560 kΩ, 1/8 W Chip Resistor
R3
4.7 Ω, 1/8 W Chip Resistor
R4
12 Ω, 1/8 W Chip Resistor
W1
Solid Copper Buss Wire, 16 AWG
MRF21125 MRF21125S MRF21125SR3
4
MOTOROLA RF DEVICE DATA