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| ISL3684 (R) PR O P R I ET A R Y Data Sheet March 2002 FN8001.2 Direct Down Conversion Transceiver The Intersil ISL3684 Wireless LAN Integrated RF Front End is part the PRISM 3, 2.4HGz 11Mbit, 802.11b compliant radio chipset. The ISL3684 interfaces directly with Intersil's ISL3871 Integrated LAN Medium Access Controller with Baseband Processor. The addition of the ISL3984 Power Amplifier and ISL3084 5GHz VCO completes the PRISM 3 LAN radio application. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4dB * Voltage gain . . . . . . . . . . . . . . . . . . . . . . -2.5dB to 88.5dB * Gain and phase balance . . . . . . . . . . . . . . . . 0.5dB, 2deg. * TX/RX switching speed . . . . . . . . . . . . . . . . . . . . . . . <1s Pinout ISL3684 MLFP TOP VIEW QOFFSET+ QOFFSETBB_AGC+ IOFFSET+ BB_OVLD BB_RREF BB_AGCIOFFSETMX_GND MX_GND BB_GND LNA_H/L MX_VCC * Direct simple interface to ISL3871 Applications * PC card wireless LAN adapters * High data rate wireless LAN systems targeting IEEE802.11b standard 56 55 54 RX_I+ RX_IRX_AGC_GND RX_AGC_VCC RX_Q+ RX_QTX_I+ TX_I1.2_REF TX_Q+ TX_QLD PRE_VDD PRE_GND 12 14 13 11 10 PE2 9 8 7 6 5 4 3 2 1 LNA_VCC LNA_GND SHIELD LNA_IN+ LNA_INSHIELD PE1 TX_GND TX_OUT TX_GND TX_VCC TX_AGC TX_BB_VCC TX_BB_GND 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 LO_IN+ 30 QLO_GND 31 LO_IN32 QLO_VCC 33 LE 34 35 36 37 38 42 39 40 41 * Spread spectrum WLAN RF modems * TDMA or CSMA packet protocol radios * PCI wireless LAN cards * ISA, ISA PnP WLAN cards * PCN / wireless PBX / wireless local loop RECEIVE SECTION 53 P IN C JE UB SECTION TRANSMIT TS OU O TT C N HA GE 52 51 50 49 48 47 46 45 PLL/SYNTHESIZER 44 43 REF_IN+ REF_IN- 1 CLK CP_VDD CP_DO CP_GND 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. Copyright (c) Intersil Americas Inc. 2002. All Rights Reserved. PRISM(R) is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation. Microsoft(R) and Windows(R) are registered trademarks of Microsoft Corporation. DATA SYNTH_GND SYNTH_VDD |
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