ISL3680 Data Sheet - Intel Silicon Intersil
Summary
The ISL3680 is a highly integrated Dual Band RF-to-baseband direct conversion transceiver solution designed for high data rate wireless LAN systems. This unit operates across both 2.4 GHz and 2.5 GHz bands, supporting IEEE802.11b/g standards through spread spectrum techniques. The technical documentation provides comprehensive details—including advanced pinouts, low supply operation specifications (down to 2.7V), detailed RF performance metrics (Noise figure, TX power), and application guidance suitable for designing robust WLAN cards and adapters utilizing global market components.
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ISL3680
Data Sheet March 2003 FN8053
Direct Conversion Transceiver Features
IX _V
The Intersil ISL3680 is a highly Highly integrated Dual Band RF to baseband solution
IX _G
integrated UHF2 process, direct IX _G _2
Frequency of operation . . . . . . . . . . . . . . . . 2.4 to 2.5GHz
conversion transceiver and is part of a _O
2.4GHz, IEEE802.11b/g compliant radio chipset. The Low supply operation . . . . . . . . . . . . . . . . . . . . 2.7 to 3.3V _O
ISL3680 directly interfaces with Intersil’s ISL3880 Medium
Noise figure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4d B
Access Controller with Integrated Baseband processor. The
TX OFDM Output Power . . . . . . . . . . . . . . . . . . . . .-5d Bm I_
addition of Intersil’s ISL3980 power amplifier and ISL3090
10GHz VCO completes a WLAN transceiver application. TX I/Q MTPR, PAR=12 . . . . . . . . . . . . . . . . . . . . . . -45d B
RX Voltage gain . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 74d B _A
Pinout
ISL3680 (QFN) RX I/Q MTPR, PAR=12, High Gain . . . . . . . . . . . . . -35d B
TOP VIEW
TX/RX switching speed . . . . . . . . . . . . . . . . . . . . . . .<1µS Direct simple interface to ISL3880
MLFP Package Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No
LNA_VCC RX_I+ Leads - Package Outline LNA_GND RX_I-
LB RX_I Near Chip Scale Package footprint, which improves PCB
LB_SHIELD RX_AGC_GND _V
BB_OVLD efficiency and has a thinner profile
LB_LNA_IN+ RX_AGC_VCC _G
LB_LNA_IN- RX_Q+ _G
HB_SHIELD RX_Q- Applications
RX I _D
NC VREF 1.2V_REF
I SELECT TX I _V
PC card wireless LAN adapters
DATANC
10GHz LO
HB_SHIELD_2 TX_I+
High data rate wireless LAN systems targeting
LB_TX_OUT+ TX_I-
IEEE802.11 b/g standards
Q SELECT RX Q _G _2
LB_TX_OUT- LE
TX Q _IN
NC TX_Q+ Spread spectrum Dual Band WLAN RF modems
LB TX_I
NC TX_Q- _IN
TDMA or CSMA packet protocol Dual Band radios _G
TX_GND SYNTHESIZER PRE_GND
TX_VCC2 PRE_VDD _V
PCI wireless LAN cards
CP SERIAL INTER.
TX_VCC1 LD/RREF _B _G
REF INTX_DET
ISA, ISA Pn P WLAN cards _B _V
Ordering Information _D
TEMP. RANGE
PART NUMBER (o C) PACKAGE PKG.NO.
ISL3680IR -40 to 85 64 Ld QFN L64.9x9
ISL3680IR-TK Tape and Reel
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 © Intersil Americas Inc. 2003. All Rights Reserved. PRISM® is a registered trademark of Intersil Corporation.
PRISM logo is a trademark of Intersil Corporation. Microsoft® and Windows® are registered trademarks of Microsoft Corporation.
Page Summary Contents For ISL3680 Data Sheet - Intel Silicon Intersil
Manual Details
| Brand | Intel |
|---|---|
| Pages | 1 |
| File Size | 39.33 KB |
| Published | May 31, 2026 |
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