MRF137 datasheet(2/9 Pages) MACOM

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ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted.)

Characteristic

Symbol

Min

Typ

Max

Unit

OFF CHARACTERISTICS

Drain–Source Breakdown Voltage (VGS = 0, ID = 10 mA)

V(BR)DSS

—

Vdc

Zero Gate Voltage Drain Current (VDS = 28 V, VGS = 0)

IDSS

—

4.0

mAdc

Gate–Source Leakage Current (VGS = 20 V, VDS = 0)

IGSS

—

1.0

µAdc

ON CHARACTERISTICS

Gate Threshold Voltage (VDS = 10 V, ID = 25 mA)

VGS(th)

1.0

3.0

6.0

Vdc

Forward Transconductance (VDS = 10 V, ID = 500 mA)

gfs

500

750

—

mmhos

DYNAMIC CHARACTERISTICS

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

Ciss

—

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

Coss

—

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

Crss

—

FUNCTIONAL CHARACTERISTICS

Noise Figure

(VDS = 28 Vdc, ID = 1.0 A, f = 150 MHz)

—

1.5

—

Common Source Power Gain

(VDD = 28 Vdc, Pout = 30 W,

f = 150 MHz (Figure 1)

IDQ = 25 mA)

f = 400 MHz (Figure 14)

Gps

—

7.7

—

Drain Efficiency (Figure 1)

(VDD = 28 Vdc, Pout = 30 W, f = 150 MHz, IDQ = 25 mA)

—

Electrical Ruggedness (Figure 1)

(VDD = 28 Vdc, Pout = 30 W, f = 150 MHz, IDQ = 25 mA,

VSWR 30:1 at All Phase Angles)

No Degradation in Output Power

Figure 1. 150 MHz Test Circuit

C1 — Arco 403, 3.0–35 pF, or equivalent

C2 — Arco 406, 15–115 pF, or equivalent

C3 — 56 pF Mini–Unelco, or equivalent

C4 — Arco 404, 8.0–60 pF, or equivalent

C5 — 680 pF, 100 Mils Chip

C6 — 0.01

µF, 100 V, Disc Ceramic

C7 — 100

µF, 40 V

C8 — 0.1

µF, 50 V, Disc Ceramic

C9, C10 — 680 pF Feedthru

D1 — 1N5925A Motorola Zener

L1 — 2 Turns, 0.29

″ ID, #18 AWG Enamel, Closewound

L2 — 1–1/4 Turns, 0.2

″ ID, #18 AWG Enamel, Closewound

L3 — 2 Turns, 0.2

″ ID, #18 AWG Enamel, Closewound

RFC1 — 20 Turns, 0.30

″ ID, #20 AWG Enamel, Closewound

RFC2 — Ferroxcube VK–200 — 19/4B

R1 — 10 k

Ω, 1/2 W Thin Film

R2 — 10 k

Ω, 1/4 W

R3 — 10 Turns, 10 k

Ω

R4 — 1.8 k

Ω, 1/2 W

Board — G10, 62 Mils

BIAS

ADJUST

RFC1

RFC2

C10

+VDD = 28 V

INPUT

OUTPUT

DUT

REV 6

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