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| (R) ISL3990 Data Sheet January 2003 FN8048 Dual Band Power Amplifier The ISL3990 is a Dual Band monolithic GaAs Power Amplifier designed to operate in both the ISM and U-NII Bands. It features two low voltage single supply stages which cascaded deliver 21dBm (Typ) output power for ISM, and three stages which deliver 16 dBm (Typ) for U-NII OFDM applications. In addition, the device includes a Dual Band detector which is accurate over a 15dB dynamic range within ()1dB, which can be used to implement an accurate ALC function. The ISL3990 is housed in a 24 lead QFN package. 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 Ordering Information PART NUMBER ISL3990IR ISL3990IR-TK TEMP RANGE (oC) -40 to 85 -40 to 85 PACKAGE 24 Ld. QFN PKG. NO. L24.4x4 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 Tape and Reel (1000 units) Simplified Block Diagram +3.3V Pinout ISL3990 (QFN) TOP VIEW 5GHZ_RF_OUT 5GHZ_RF_OUT 2GHZ_DET_OUT 2 GHZ_RF_IN 2GHZ_BIAS 2GHZ_DET_OUT PEAK DETECTOR 5GHZ_RF_IN 2GHZ_RF_OUT 18 17 16 15 5GHZ_DET_OUT 19 5GHZ_RF_OUT +3.3V 20 +3.3V 21 GND GND 14 13 12 GND 11 2GHZ_RF_OUT 10 2GHZ_RF_OUT 9 8 7 GND +3.3V +3.3V 5GHZ_BIAS 5GHZ_DET_OUT BIAS GND 22 5GHZ_RF_IN 23 GND 24 PEAK DETECTOR 1 GND 2 5GHZ_BIAS 3 2GHZ BIAS 4 GND 5 2GHZ_RF_IN 6 GND 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2003. All Rights Reserved All other trademarks mentioned are the property of their respective owners. GND BIAS |
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