MRF175LU datasheet(2/8 Pages) MACOM

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MRF175LU MRF175LV

MOTOROLA RF DEVICE DATA

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

Characteristic

Symbol

Min

Typ

Max

Unit

ON CHARACTERISTICS

Gate Threshold Voltage (VDS = 10 V, ID = 100 mA)

VGS(th)

1.0

3.0

6.0

Vdc

Drain–Source On–Voltage (VGS = 10 V, ID = 5.0 A)

VDS(on)

0.1

0.9

1.5

Vdc

Forward Transconductance (VDS = 10 V, ID = 2.5 A)

gfs

2.0

3.0

—

mhos

DYNAMIC CHARACTERISTICS

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

Ciss

—

180

—

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

Coss

—

200

—

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

Crss

—

FUNCTIONAL CHARACTERISTICS — MRF175LV (Figure 1)

Common Source Power Gain

(VDD = 28 Vdc, Pout = 100 W, f = 225 MHz, IDQ = 100 mA)

Gps

—

Drain Efficiency

(VDD = 28 Vdc, Pout = 100 W, f = 225 MHz, IDQ = 100 mA)

—

Electrical Ruggedness

(VDD = 28 Vdc, Pout = 100 W, f = 225 MHz, IDQ = 100 mA,

VSWR 30:1 at all Phase Angles)

No Degradation in Output Power

FUNCTIONAL CHARACTERISTICS — MRF175LU (Figure 2)

Common Source Power Gain

(VDD = 28 Vdc, Pout = 100 W, f = 400 MHz, IDQ = 100 mA)

Gps

8.0

—

Drain Efficiency

(VDD = 28 Vdc, Pout = 100 W, f = 400 MHz, IDQ = 100 mA)

—

Electrical Ruggedness

(VDD = 28 Vdc, Pout = 100 W, f = 400 MHz, IDQ = 100 mA,

VSWR 30:1 at all Phase Angles)

No Degradation in Output Power

Figure 1. 225 MHz Test Circuit

BIAS

RFC1

C10

C11

RF OUTPUT

D.U.T.

RF INPUT

+28 Vdc

0.32″

0.45″

0.15″

0.2″

C1, C2, C8 — Arco 463 or Equivalent

C3, C7 — 25 pF Unelco Cap

C4 — 1000 pF Chip Cap

C5 — 0.01

µF Chip Cap

C6 — 250 pF Unelco Cap

C9 — Arco 462 or Equivalent

C10 — 1000 pF ATC Chip Cap

C11 — 10

µF 100 V Electrolytic

L1 — Hairpin Inductor #18 Wire

L2 — Stripline Inductor 0.200

″ x 0.500″

L3 — Hairpin Inductor #16 Wire

L4 — 2 Turns #16 Wire 5/16

″ ID

RFC1 — VK200–4B

R1 — 1.0 k 1/4 W Resistor

R2 — 100

Ω Resistor

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