1 ? fn8067 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. copyright ? intersil americas inc. 2003. all rights reserved. prism? is a registered trademark of intersil americas inc. prism and design are trademarks of intersil americas inc. all other trademarks mentioned are the property of their respective o wner. preliminary ISL3686B direct down conversion transceiver the intersil ISL3686B is a highly integrated sige process, direct down conversion transceiver and is part of the prism gt, 2.4ghz 54mbps , ieee802.11b/g compliant radio chipset. the ISL3686B direct ly interfaces with intersil?s isl3865a baseband processor (bbp) and isl3880 integrated medi um access controller (mac) with bbp. the addition of the isl3984/85 intersil power amplifier, and the isl3084 5ghz vco completes the lan radio application. pinout ISL3686B (qfn) top view features ? highly integrated rf to baseband solution ? frequency of operation . . . . . . . . . . . . 2.4ghz to 2.5ghz ? low supply operation . . . . . . . . . . . . . . . . . . . 2.7v to 3.3v ? noise figure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1db ? voltage gain . . . . . . . . . . . . . . . . . . . . . . . +1.5db to 81db ? gain and phase balance, typical . . . . . . . . . 0.5db, 2deg. ? tx/rx switching speed . . . . . . . . . . . . . . . . . . . . . . . <1 s ? direct simple interface to isl3880 ? enhanced replacement for isl3686, isl3686a applications ? pc card wireless lan adapters ? high data rate wireless lan systems targeting ieee802.11b/g standards ? spread spectrum wlan rf modems ? tdma or csma packet protocol radios ? pci wireless lan cards ? isa, isa pnp wlan cards ? pcn/wireless pbx/wir eless local loop ordering information mx_vcc lna_vcc mx_gnd lna_gnd lna_in- shield lna_in+ shield tx_i+ tx_q+ tx_q- tx_gnd tx_out tx_i- tx_vcc tx_gnd cp_vdd ref_in+ clk ref_in- cp_do pre_vdd pre_gnd cp_gnd data lo_in- qlo_vcc lo_in+ qlo_gnd rx_i+ rx_i- rx_agc_gnd bb_agc- rx_q- rx_q+ qoffset+ rx_agc_vcc pe1 1.2_ref tx_agc lna_h/l qoffset- ioffset+ ioffset- bb_agc+ bb_ovld le 25 24 23 22 21 20 19 18 17 16 15 27 26 28 bb_rref bb_gnd synth_vdd synth_gnd tx_bb_vcc ld tx_det agc and dc offset ctrl i + q quadrature synthesizer i+q 2 i+q 46 47 48 49 50 51 52 53 54 55 56 44 45 43 32 33 34 35 36 37 38 39 40 41 42 30 31 29 4 5 6 7 8 9 10 11 12 13 14 2 3 1 mx_gnd pe2 part number temp. range ( o c) package pkg. dwg. # ISL3686Bir -40 to 85 56 ld qfn l56.8x8 ISL3686Bir-tk tape and reel data sheet june 2003
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