HFA3860B
Data Sheet
July 1999
File Number
4594.1
Direct Sequence Spread Spectrum
Baseband Processor
The Harris HFA3860B Direct Sequence
Spread Spectrum (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.
™
Features
• Complete DSSS Baseband Processor
• Processing Gain . . . . . . . . . . . . . . . . . . . . . . . . . . .
≥10dB
• Programmable Data Rate. . . . . . . 1, 2, 5.5, and 11MBPS
• Ultra Small Package . . . . . . . . . . . . . . . . . . . 7 x 7 x 1mm
• Single Supply Operation (44MHz Max) . . . . 2.7V to 3.6V
• Modulation Methods . . DBPSK, DQPSK, CCK, and MBOK
• Supports Full or Half Duplex Operations
• On-Chip A/D Converters for I/Q Data (3-Bit, 22 MSPS)
and RSSI (6-Bit)
• Backwards Compatible with HFA3824A, HFA3860A
• Supports Dual Antenna Diversity
The HFA3860B has on-board A/Ds 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 data scrambling capability, are available
along with Complementary Code Keying and M-Ary
Bi-Orthogonal Keying to provide a variety of data rates. Built-
in flexibility allows the HFA3860B to be configured through a
general purpose control bus, for a range of applications. A
Receive Signal Strength Indicator (RSSI) monitoring function
with on-board 6-bit A/D provides Clear Channel Assessment
(CCA) to avoid data collisions and optimize network
throughput. The HFA3860B is housed in a thin plastic quad
flat package (TQFP) suitable for PCMCIA board applications.
Applications
• Enterprise WLAN Systems
• Systems Targeting IEEE 802.11 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
Ordering Information
PART NO.
HFA3860BIV
HFA3860BIV96
TEMP.
RANGE (
o
C)
-40 to 85
-40 to 85
PKG. TYPE
48 Ld TQFP
Tape and Reel
PKG. NO.
Q48.7x7
Pinout
HFA3860B (TQFP)
I
OUT
Q
OUT
TEST7
TEST6
TEST5
TEST4
V
DD
GND
TEST3
TEST2
TEST1
TEST0
Simplified Block Diagram
I
IN
DE-SPREADER
3-BIT
A/D
Q
OUT
Q
IN
RSSI
GND
V
REFP
V
REFN
V
DDA
GND
V
DDA
V
DD
GND
SDI
SCLK
SPREADER
TEST_CK
TX_PE
TXD
TXCLK
TX_RDY
GND
V
DD
R/W
CS
V
DDA
GND
I
IN
48 47 46 45 44 43 42 41 40 39 38 37
36
35
2
34
3
33
4
32
5
31
6
30
7
29
8
28
9
27
10
26
11
25
12
13 14 15 16 17 18 19 20 21 22 23 24
1
RXCLK
RXD
MD_RDY
RX_PE
CCA
GND
MCLK
V
DD
RESET
ANTSEL
ANTSEL
SD
Q
IN
3-BIT
A/D
RSSI
6-BIT
A/D
CCA
PRO-
CESSOR
INTER-
FACE
CTRL
I
OUT
MOD.
4-1
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.
DATA TO NETWORK
PROCESSOR
DEMOD.
INTERSIL [ INTERSIL CORPORATION ]
