ISL3680

® ISL3680 Data Sheet March 2003 FN8053 Direct Conversion Transceiver www.datasheet4u.com Features Highly integrated Dual Band RF to baseband solution Frequency of operation . . . . . . . . . . . . . . . . 2.4 to 2.5GHz 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 The Intersil ISL3680 is a highly integrated UHF2 process, direct conversion transceiver and is part of a 2.4GHz, IEEE802.11b/g compliant radio chipset. The ISL3680 directly interfaces with Intersil’s ISL3880 Medium Access Controller with Integrated Baseband processor. The addition of Intersil’s ISL3980 power amplifier and ISL3090 10GHz VCO completes a WLAN transceiver application. Pinout ISL3680 (QFN) TOP VIEW BB_GND/RREF_2 10 MIXER_GND_2 BB_GND/RREF 11 MIXER_GND 12 MIXER_VCC Q_OFFSET+ RX I/Q MTPR, PAR=12, High Gain . . . . . . . . . . . . . -35dB TX/RX switching speed . . . . . . . . . . . . . . . . . . . . . . .<1µS Direct simple interface to ISL3880 BB_AGC+ BB_OVLD BB_AGCI_OFFSET- Q_OFFSET- 16 LNA_H/L I_OFFSET+ 13 PE2 15 NC 14 PE1 MLFP Package 64 RX_I+ LNA_VCC 17 LNA_GND 18 LB_SHIELD 19 LB_LNA_IN+ 20 LB_LNA_IN- 21 HB_SHIELD 22 NC 23 NC 24 HB_SHIELD_2 25 LB_TX_OUT+...