MRF173 MRF173CQ

2

MOTOROLA RF DEVICE DATA

Characteristic

Symbol

Min

Typ

Max

Unit

DYNAMIC CHARACTERISTICS

Input Capacitance (VDS = 28 V, VGS = 0 V, f = 1.0 MHz)

Ciss

—

110

—

pF

Output Capacitance (VDS = 28 V, VGS = 0 V, f = 1.0 MHz)

Coss

—

105

—

pF

Reverse Transfer Capacitance (VDS = 28 V, VGS = 0 V, f = 1.0 MHz)

Crss

—

10

—

pF

FUNCTIONAL CHARACTERISTICS

Noise Figure (VDD = 28 V, f = 150 MHz, IDQ = 50 mA)

NF

—

1.5

—

dB

Common Source Power Gain

(VDD = 28 V, Pout = 80 W, f = 150 MHz, IDQ = 50 mA)

Gps

11

13

—

dB

Drain Efficiency (VDD = 28 V, Pout = 80 W, f = 150 MHz, IDQ = 50 mA)

η

55

60

—

%

Electrical Ruggedness

(VDD = 28 V, Pout = 80 W, f = 150 MHz, IDQ = 50 mA)

Load VSWR 30:1 at all phase angles

ψ

No Degradation in Output Power

Series Equivalent Input Impedance

MRF173

(VDD = 28 V, Pout = 80 W, f = 150 MHz, IDQ = 50 mA)

Zin

—

2.99 – j4.5

—

Ohms

Series Equivalent Output Impedance

MRF173

(VDD = 28 V, Pout = 80 W, f = 150 MHz, IDQ = 50 mA)

Zout

—

2.68 – j1.3

—

Ohms

Series Equivalent Input Impedance

MRF173CQ

(VDD = 28 V, Pout = 80 W, f = 150 MHz, IDQ = 50 mA)

Zin

—

1.35 – j5.15

—

Ohms

Series Equivalent Output Impedance

MRF173CQ

(VDD = 28 V, Pout = 80 W, f = 150 MHz, IDQ = 50 mA)

Zout

—

2.72 – j149

—

Ohms

C1, C15 — 470 pF Unelco

C2, C3, C5 — 9–180 pF, Arco 463

C4, C6 — 15 pF, Unelco

C7 — 5–80 pF, Arco 462

C8, C10, C14, C16 — 0.1

µF

C9, C13 — 50

µF, 50 Vdc

C11, C12 — 680 pF, Feed Through

L1 — #16 AWG, 1–1/4 Turns, 0.3

″ ID

L2 — #16 AWG Hairpin 1

″ long

L3 — #14 AWG Hairpin 0.8

″ long

L4 — #14 AWG Hairpin 1.1

″ long

RFC1 — Ferroxcube VK200–19/4B

RFC2 — 18 Turns #18 AWG Enameled, 0.3

″ ID

R1 — 10 k

Ω, 10 Turns Bourns

R2 — 1.8 k

Ω, 1/4 W

R3 — 10 k

Ω, 1/2 W

Z1 — 1N5925A Motorola Zener

R1

C11

R2

C8

C9

Z1

C10

C13

C14

C12

C1

C2

C3

C4

C5

C6

C7

C15

L1

L2

L3

L4

RF

INPUT

RF

OUTPUT

VDD = 28 V

+

–

RFC1

RFC2

R3

C16

+

+

D.U.T.

Figure 1. 150 MHz Test Circuit

–

Vdc

–