ISL3787
®
Data Sheet
J uly 2003
FN8003.1
1.2GHz IF Converter w/AGC and
Synthes izer
Features
• Frequency of Operation, RXin/TXout. . . .300 to 1200MHz
• Frequency of Operation, TXin/RXout. . . . . . .10 to 30MHz
The ISL3787 is a highly integrated,
UHF2, Half Duplex IF Converter, PLL
Synthesizer and VCO IC device. It is
part of the Intersil PRISM® V, 5GHz radio chipset.
• Receive Voltage Gain . . . . . . . . . . . . . . . . . . . . . . . .78dB
• Wide Dynamic AGC Control. . . . . . . . . . . . . . . . . . . .76dB
• Transmit Power Control Range . . . . . . . . . . . . . . . . .40dB
• Integrated Antialiasing and Preshaping Filters
The ISL3787directly interfaces with the ISL3877 Wireless
LAN Integrated Media Access Controller with Baseband
Processor. Adding Intersil’s ISL3687 5GHz RF/IF Converter
with Integrated Synthesizer allows operation with a single
SAW filter for both Transmit and Receive IF to Baseband
functions. The addition of a power amplifier completes a
Wireless LAN radio application for the 802.11a 5GHz
standard.
• Integrates a VCO and a Synthesizer PLL
• Low Supply Operation . . . . . . . . . . . . . . . . . . . . . 2.7-3.3V
Applications
• High Data Rate Wireless LAN IEEE 802.11a Systems
The ISL3787 combines all the necessary IF to Baseband
functions into a QFN Plastic Package suitable for miniPCI
and PCMCIA applications.
• PCI, miniPCI and PCMCIA Wireless LAN Adapters
• Spread Spectrum WLAN RF Modems
• TDMA or CSMA Packet Protocol Radios
• PCN/Wireless PBX/Wireless Local Loop
Ordering Information
PART
NUMBER
TEMP. RANGE
O
( C)
PACKAGE
56 Lead QFN
Tape and Reel
PKG. DWG. #
Pinout
ISL3787IR
-40 to 85
-40 to 85
L56.8 X 8
ISL3787
TOP VIEW
ISL3787IR-TK
Simplified Block Diagram
14 13 12 11 10
9
8
7
6
5
4
3
2
1
LO_VCC 15
OSC+ 16
OSC- 17
56 VCC
55 GND
54 PE1
LE_IF 18
DATA 19
SYN_VDD 20
GND 21
53 PE2
PLL
SYNTH
52 GND
51 VCC
50 AGCWRITE2
49 GND
CLK 22
ISL3787
GND 23
48 VCC
SYN_VDD 24
GND 25
47 VCC
46 GND
VDD 26
45 AGC_CTRL+
44 AGC_CTRL-
43 REF_OUT
CP_D0+ 27
CP_D0- 28
29 30 31 32 33 34 35 36 37 38 39 40 41 42
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.
1
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. All other trademarks mentioned are the property of their respective owners.
PRISM® is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc.