HFA3824A View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
HFA3824A Datasheet PDF : 40 Pages
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Data Sheet
HFA3824A
August 1998 File Number 4459.2
Direct Sequence Spread Spectrum
Baseband Processor
™ The Intersil HFA3824A Direct
Sequence (DSSS) baseband
processor is part of the PRISM™
2.4GHz radio chipset, and contains all
the functions necessary for a full or
half duplex packet baseband transceiver.
The HFA3824A has on-board ADC’s for analog I and Q
inputs, for which the HFA3724/6 IF QMODEM is
recommended. Differential phase shift keying modulation
schemes DBPSK and DQPSK, with optional data scrambling
capability, are combined with a programmable PN sequence
of up to 16 bits. Built-in flexibility allows the HFA3824A to be
configured through a general purpose control bus, for a wide
range of applications. A Receive Signal Strength Indicator
(RSSI) monitoring function with on-board 6-bit 2 MSPS ADC
provides Clear Channel Assessment (CCA) to avoid data
collisions and optimize network throughput. The HFA3824A
is housed in a thin plastic quad flat package (TQFP) suitable
for PCMCIA board applications.
Ordering Information
PART NO.
HFA3824AIV
HFA3824AIV96
TEMP.
RANGE (oC)
PKG. TYPE
-40 to 85 48 Ld TQFP
-40 to 85 Tape and Reel
PKG. NO.
Q48.7x7
Pinout
HFA3824A (TQFP)
Features
• Complete DSSS Baseband Processor
• High Data Rate. . . . . . . . . . . . . . . . . . . . . . .up to 4 MBPS
• Processing Gain . . . . . . . . . . . . . . . . . . . . . . . . up to 12dB
• Programmable PN Code . . . . . . . . . . . . . . . . up to 16 Bits
• Ultra Small Package . . . . . . . . . . . . . . . . . . . . 7 x 7 x 1mm
• Single Supply Operation (44MHz Max) . . . . . 2.7V to 5.5V
• Modulation Method. . . . . . . . . . . . . . . . DBPSK or DQPSK
• Supports Full or Half Duplex Operations
• On-Chip A/D Converters for I/Q Data (3-Bit, 44 MSPS)
and RSSI (6-Bit, 2 MSPS)
• Backward Compatible with HSP3824
• Programmable Rotation I, Q Sense
Applications
• Systems Targeting IEEE802.11 Standard
• DSSS PCMCIA Wireless Transceiver
• Spread Spectrum WLAN RF Modems
• TDMA Packet Protocol Radios
• Part 15 Compliant Radio Links
• Portable Bar Code Scanners/POS Terminal
• Portable PDA/Notebook Computer
• Wireless Digital Audio
• Wireless Digital Video
• PCN/Wireless PBX
Simplified Block Diagram
TEST_CK
TX_PE
TXD
TXCLK
TX_RDY
GND
VDD
R/W
CS
VDDA
GND
IIN
48 47 46 45 44 43 42 41 40 39 38 37
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
9
28
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
RXCLK
RXD
MD_RDY
RX_PE
CCA
GND
MCLK
VDD
RESET
ANTSEL
A/D_CAL
SD
IIN
QIN
RSSI
IOUT
QOUT
3-BIT
A/D
3-BIT
A/D
6-BIT
A/D
DPSK
DEMOD.
CCA
PRO-
CESSOR
INTER-
FACE
CTRL
DPSK
MOD.
2-99
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.
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