intersil ISL3980 DATA SHEET

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ISL3980

Data Sheet January 2003

Power Amplifier

The ISL3980 is a monolithic GaAs Power Amplifier designed to operate in

the ISM band. It features two low voltage single supply stages which cascaded deliver 21dBm (Typ) output power.

In addition, the device includes an integrated power detector which is accurate over a 15dB dynamic range within (±)1dB, which can be used to implement an accurate ALC function.

The ISL3980 is housed in a 24 lead QFN package.

Ordering Information

TEMP

PART NUMBER

ISL3980IR -40 to 85 24 Ld. QFN L24.4x4 ISL3980IR-TK -40 to 85 Tape and Reel (1000 units)

RANGE (oC) PACKAGE PKG. NO.

Simplified Block Diagram

+3.3V

2GHZ_RF_OUT2 GHZ_RF_IN

2GHZ_BIAS

2GHZ_DET_OUT

BIAS

FN8055

Features

• Single Supply. . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 3.6V

• Output Power . . . . . . . . . . . . . . . . . . . . . . . . .21dBm (Typ)

• Power Gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28dB (Typ)

• Detector Linear Input Power Range. . . . . . . . . . . . . .15dB

• Detector Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1dB

QFN Package

• Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline

• Near Chip Scale Package footprint, which improves PCB efficiency and has a thinner profile

Applications

• Systems Targeting IEEE802.11a/b/g WLANs

• Wireless Local Area Networks (WLAN)

• PCMCIA Wireless Transceivers

• ISM Systems Including Automatic Level Control (ALC)

• TDMA Packet Protocol Radios

Pinout

ISL3980 (QFN)

TOP VIEW

PEAK DETECTOR

2GHZ_DET_OUT

GND

1617

GND

2GHZ_RF_OUT 2GHZ_RF_OUT

GND

+3.3V

GND

2GHZ BIAS

GND

2GHZ_RF_IN

GND

19 20

+3.3V +3.3V

21 22

GND

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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