PRELIMINARY

FMA246

Phone: +1 408 850-5790

www.filcs.com

Revised: 7/28/04

Email: sales@filcsi.com

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PERFORMANCE

♦ 8.0 – 14.0 GHz Operating Bandwidth

♦ 2.5 dB Noise Figure

♦ 30 dB Small-Signal Gain

♦ 19 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 FMA246 is a 3-stage, reactively matched pHEMT high-gain MMIC amplifier designed for use

over the 8 to 14 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. Typical applications include general (low noise) 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

14

GHz

Small Signal Gain

27

29

31

dB

Saturated Drain Current

(see Note)

220

250

280

mA

Operating Current

145

170

195

mA

Small Signal Gain Flatness

± 0.6

± 1.0

dB

Noise Figure

NF

2.3

2.5

2.8

dB

IMD

-44

dBc

Power at 1dB Compression

18

20

22

dBm

Input Return Loss

-10

-8

dB

Output Return Loss

-16

-9

dB

Reverse Isolation

-60

-50

dB