HFA3683A
TM
Data Sheet
June 2000
File Number 4634.5
2.4GHz RF/IF Converter and Synthesizer
Features
The HFA3683A is a monolithic SiGe
half-duplex RF/IF transceiver designed
to operate in the 2.4GHz ISM band.
• Highly Integrated
• Multiplexed RX/TX IF Path Utilizes Single IF Filter
• Programmable Synthesizer
The receive chain features a low noise,
gain selectable amplifier (LNA) followed
• Gain Selectable LNA
by a down-converter mixer. An up-converter mixer and a
high performance preamplifier compose the transmit chain.
The remaining circuitry comprises a high frequency Phase
Locked Loop (PLL) synthesizer with a three wire
programmable interface for local oscillator applications.
• Power Management/Standby Mode
• Single Supply 2.7V to 3.3V Operation
Cascaded LNA/Mixer (High Gain)
• Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25dB
A reduced filter count is realized by multiplexing the receive
and transmit IF paths and by sharing a common differential
matching network. Furthermore, both transmit and receive
RF amplifiers can be directly connected to mixers. The
inherent image rejection of both the transmit and receive
functions allow this economic advantage.
• SSB Noise Figure. . . . . . . . . . . . . . . . . . . . . . . . . . . 3.7dB
• Input IP3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -13dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Cascaded LNA/Mixer (Low Gain)
• Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5dB
The HFA3683A is housed in a 64 lead TQFP package well
suited for PCMCIA board applications.
• Input P1dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.5dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
Ordering Information
Cascaded Mixer/Preamplifier
PART
NUMBER
TEMP. RANGE
o
( C)
PACKAGE
64 Ld TQFP
Tape and Reel
PKG. NO.
• Transmit Cascaded Mixer/Preamplifier Gain . . . . . . .25dB
HFA3683AIN
-40 to 85
-40 to 85
Q64.10x10
• SSB Noise Figure. . . . . . . . . . . . . . . . . . . . . . . . . . . .10dB
• Output P1dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4dBm
• IF Frequency . . . . . . . . . . . . . . . . . . . 280MHz to 600MHz
HFA3683AIN96
Simplified Block Diagram
Applications
• IEEE802.11 1MBPS and 2MBPS Standard
• Systems Targeting IEEE802.11, 11MBPS Standard
• Wireless Local Area Networks
• PCMCIA Wireless Transceivers
• ISM Systems
RX_IN
RX_MX_OUT
CP_DO
• TDMA Packet Protocol Radios
PLL
INTERFACE
REF_IN
LO_IN
MODULE
TXA_OUT
TX_MX_IN
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.
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