INTERSIL ISL3684

ISL3684
®
Data Sheet
PR O P R I ET A R Y
March 2002
FN8001.2
Direct Down Conversion Transceiver
Features
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.
• Highly integrated RF to baseband solution
Pinout
• TX/RX switching speed . . . . . . . . . . . . . . . . . . . . . . . <1µs
BB_AGC+
BB_AGC-
BB_OVLD
2
1
BB_GND
7
BB_RREF
QOFFSET8
3
QOFFSET+
9
IOFFSET-
PE2
10
4
MX_GND
11
IOFFSET+
MX_VCC
12
5
MX_GND
13
6
LNA_H/L
14
56
RX_I+
16
55
RX_I-
SHIELD
17
54
RX_AGC_GND
LNA_IN+
18
LNA_IN-
19
SHIELD
20
PE1
21
TX_GND
22
TX_OUT
23
TX_GND
24
TX_VCC
25
TX_BB_GND
RECEIVE SECTION
O
TT
C
N
HA
GE
EC
BJ
U
TRANSMIT
SECTION
TS
OU
26
PLL/SYNTHESIZER
28
41
42
CP_GND
DATA
SYNTH_GND
SYNTH_VDD
REF_IN-
40
REF_IN+
CP_DO
35
LE
39
34
QLO_VCC
CP_VDD
33
LO_IN-
38
32
QLO_GND
CLK
31
LO_IN+
37
30
36
29
1
• Gain and phase balance . . . . . . . . . . . . . . . . ±0.5dB, ±2deg.
• High data rate wireless LAN systems targeting
IEEE802.11b standard
15
27
• Voltage gain . . . . . . . . . . . . . . . . . . . . . . -2.5dB to 88.5dB
• PC card wireless LAN adapters
LNA_VCC
TX_AGC
• Noise figure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4dB
Applications
LNA_GND
TX_BB_VCC
• Low supply operation . . . . . . . . . . . . . . . . . . . 2.7V to 3.3V
• Direct simple interface to ISL3871
ISL3684
MLFP
TOP VIEW
P IN
• Frequency of operation . . . . . . . . . . . . 2.4GHz to 2.5GHz
53
RX_AGC_VCC
52
RX_Q+
51
RX_Q-
50
TX_I+
49
TX_I-
48
1.2_REF
47
TX_Q+
46
TX_Q-
45
LD
44
PRE_VDD
43
PRE_GND
• 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
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. 2002. All Rights Reserved. PRISM® is a registered trademark of Intersil Corporation.
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