1 ? fn8079 ISL3992 dual band power amplifier the ISL3992 is a dual band monolithic gaas power amplifier designed to operate in both the ism and u-nii bands as part of the 2.4/ 5.2ghz worldwide ieee802.11 a/b/g compliant radio chipset. it features two low voltage single supply stages which cascaded deliver 21dbm (typ) output power for ism, and th ree 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 ISL3992 is housed in a 24 lead qfn package. simplified block diagram 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 ISL3992 (qfn) top view ordering information part number temp range ( o c) package pkg. dwg. # ISL3992ir -40 to 85 24 ld. qfn l24.4x4 ISL3992ir-tk -40 to 85 tape and reel (1000 units) bias peak detector 2ghz_det_out 2ghz_rf_out 2 ghz_rf_in +3.3v 2ghz_bias 5ghz_bias 5ghz_rf_in 5ghz_det_out bias peak detector 5ghz_rf_out gnd 5ghz_rf_out 5ghz_rf_out gnd 2ghz_det_out gnd gnd 5ghz_bias 2ghz_bias gnd 2ghz_rf_in gnd 5ghz_det_out +3.3v +3.3v gnd 5ghz_rf_in gnd gnd 2ghz_rf_out 2ghz_rf_out gnd +3.3v +3.3v 19 20 21 22 23 24 12 11 10 9 8 7 18 17 16 15 14 13 123456 data sheet august 2003 caution: these devices are sensitive to electrosta tic 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 ? intersil americas inc. 2003. all rights reserved all other trademarks mentioned are the property of their respective owners.
|
