
2-27
HFA3624
2.4GHz Up/Down Converter
The Intersil 2.4GHz PRISM chip set
is a highly integrated five-chip solution
for RF modems employing Direct
Sequence Spread Spectrum (DSSS)
signaling. The HFA3624 RF/IF
converter is one of the five chips in the PRISM chip set
(see Figure 1 for the typical application circuit).
The HFA3624 Up/Down converter is a monolithic bipolar
device for up/down conversion applications in the 2.4GHz to
2.5GHz range. Manufactured in the Intersil UHF1X process,
the device consists of a low noise amplifier and down
conversion mixer in the receive section and an up conversion
mixer with power preamp in the transmit section. An energy
saving power enable control feature assures isolation
between the receive and transmit circuits for time division
multiplexed systems. The device requires low drive levels from
the local oscillator and is housed in a small outline 28 lead
SSOP package ideally suited for PCMCIA card applications.
Pinout
HFA3624
(SSOP)
TOP VIEW
Features
Complete Receive/Transmit Front End
RF Frequency Range. . . . . . . . . . . . . . 2.4GHz to 2.5GHz
IF Operation . . . . . . . . . . . . . . . . . . . . .10MHz to 400MHz
Single Supply Battery Operation . . . . . . . . . 2.7V to 5.5V
Independent Receive/Transmit Power Enable Mode
Applications
Systems Targeting IEEE 802.11 Standard
PCMCIA Wireless Transceiver
Wireless Local Area Network Modems
TDMA Packet Protocol Radios
Part 15 Compliant Radio Links
Portable Battery Powered Equipment
Block Diagram
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HFA3624IA
-40 to 85
28 Ld SSOP
M28.15
HFA3624IA96
-40 to 85
Tape and Reel
RX_PE
GND
RXM_IF+
RXM_IF-
LO_IN
TXM_IF-
TXM_IF+
RX_V
CC
RXM_RF
TXM_RF
LNA_RX_V
CC2
GND
LNA_RX_OUT
LNA_RX_V
CC1
GND
PRE_TX_OUT
PRE_TX_V
CC2
GND
PRE_TX_IN
GND
LNA_RX_IN
GND
GND
PRE_TX_V
CC1
LO_BY
GND
TX_V
CC
TX_PE
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RXM_IF+
RXM_IF-
LO_IN
TXM_IF+
LNA_RX_IN
PRE_TX_OUT
LNA_RX_OUT
RXM_RF
PRE_TX_IN
TXM_RF
TX_PE
RX_PE
LO_BY
TXM_IF-
LNA
PRE
RXM
TXM
LOB
TX BIAS
RX BIAS
Data Sheet
November 1998
File Number
4066.8
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.