PRELIMINARY

FMA411

Phone: +1 408 850-5790

www.filcs.com

Revised: 7/19/04

Fax: +1 408 850-5766

Email: sales@filcsi.com

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PERFORMANCE

♦ 8.5 – 14.0 GHz Operating Bandwidth

♦ 2.6 dB Noise Figure

♦ 18 dB Small-Signal Gain

♦ 17.5 dm Output Power

♦ +6V Single Bias Supply

♦ Adjustable Operating Current

♦ DC De-coupled Input and Output Ports

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DESCRIPTION AND APPLICATIONS

The FMA411 is a 2-stage, reactively matched pHEMT low-noise MMIC amplifier designed for use

over the 8.5 to 14.0 GHz bandwidth. The amplifier requires a single +6V supply and one off-chip

component for supply de-coupling; the supply voltage can be varied from +3V to +6V if needed.

Both the input and output ports are DC de-coupled. Grounding of the amplifier is provided by plated

thru-vias to the bottom of the die, no additional ground is required. Operating current can be

adjusted using the Source resistor ladders located along the bottom edge, by bonding a particular pad

to ground, in order to optimize noise or power performance.

Typical applications include low-noise front end amplifiers, and general gain block utilizations in X-

band. The amplifier is unconditionally stable over all load states (-45 to +85

°C), and conditionally

stable if the input port is open-circuited.

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ELECTRICAL SPECIFICATIONS AT 22°C

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Operating Frequency Bandwidth

BW

8.5

14

GHz

Small Signal Gain

16.5

18

21

dB

Saturated Drain Current

(see Note)

210

230

270

mA

Operating Current

125

140

165

mA

Small Signal Gain Flatness

± 0.8

± 1.2

dB

Noise Figure

NF

2.6

3.5

dB

IMD

-46

dBc

Power at 1dB Compression

16

17.5

dBm

Input Return Loss

-10

-6

dB

Output Return Loss

-16

-10

dB

Reverse Isolation

-40

-35

dB