Dual Band Direct Conversion Transceiver

The Intersil ISL3690 is a highly integrated UHF2 process, DUAL BAND direct conversion transceiver and is part of a 2.4/5.2GHz, IEEE802.11a/b/g compliant radio chipset. The ISL3690 directly interfaces with Intersil’s ISL3890 Medium Access Controller with Integrated Baseband processor. The addition of Intersil’s ISL3990 power amplifier and ISL3090 10GHz VCO completes a WLAN transceiver application.

Features

? Highly integrated Dual Band RF to baseband solution

? Frequency of operation. 2.4 to 2.5GHz or 5.15 to 5.35GHz

? Low supply operation . . . . . . . . . . . . . . . . . . . . 2.7 to 3.3V

? Noise figure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4dB

? TX OFDM Output Power . . . . . . . . . . . . . . . . . . . . .-5dBm

? TX I/Q MTPR, PAR=12 . . . . . . . . . . . . . . . . . . . . . . -45dB

? RX Voltage gain . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 74dB

? RX I/Q MTPR, PAR=12, High Gain . . . . . . . . . . . . . -35dB

? TX/RX switching speed . . . . . . . . . . . . . . . . . . . . . . . <1μs

? Direct simple interface to ISL3890

? 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

? PC card wireless LAN adapters

? High data rate wireless LAN systems targeting IEEE802.11 a/b/g standards

? Spread spectrum Dual Band WLAN RF modems

? TDMA or CSMA packet protocol Dual Band radios

? PCI wireless LAN cards

? ISA, ISA PnP WLAN cards