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HFA3925 Datasheet

  • HFA3925

  • 2.4GHz - 2.5GHz 250mW Power Amplifier

  • 95.71KB

  • Intersil   Intersil

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HFA3925
Data Sheet
July 1998
File Number
4132.4
2.4GHz - 2.5GHz 250mW Power Ampli鏗乪r
The Intersil 2.4GHz PRISM鈩?chip set
is a highly integrated five-chip solution
for RF modems employing Direct
Sequence Spread Spectrum (DSSS)
signaling. The HFA3925 2.4GHz-
2.5GHz, 250mW power ampli鏗乪r is one of the 鏗乿e chips in
the PRISM鈩?chip set (see the Typical Application Diagram).
鈩?/div>
Features
鈥?Highly Integrated Power Ampli鏗乪r with T/R Switch
鈥?Operates Over 2.7V to 6V Supply Voltage
鈥?High Linear Output Power (P
1dB
: +24dBm)
鈥?Individual Gate Control for Each Ampli鏗乪r Stage
鈥?Low Cost SSOP-28 Plastic Package
The Intersil HFA3925 is an integrated power ampli鏗乪r with
transmit/receive switch in a low cost SSOP 28 plastic
package. The power ampli鏗乪r delivers +27dB of gain with
high ef鏗乧iency and can be operated with voltages as low as
2.7V. The power ampli鏗乪r switch is fully monolithic and can
be controlled with CMOS logic levels.
The HFA3925 is ideally suited for QPSK, BPSK or other
linearly modulated systems in the 2.4GHz Industrial,
Scienti鏗乧, and Medical (ISM) frequency band. It can also be
used in GFSK systems where levels of +25dBm are
required. Typical applications include Wireless Local Area
Network (WLAN) and wireless portable data collection.
REMEMBER: Always apply Negative power to the VG
pins before applying the Positive V
DD
bias. Failure to do
so may result in the destruction of the HFA3925 Power
Ampli鏗乪r.
Applications
鈥?Systems Targeting IEEE 802.11 Standard
鈥?TDD Quadrature-Modulated Communication Systems
鈥?Wireless Local Area Networks
鈥?PCMCIA Wireless Transceivers
鈥?ISM Systems
鈥?TDMA Packet Protocol Radios
鈥?PCS/Wireless PBX
Ordering Information
PART NUMBER
HFA3925IA
HFA3925IA96
TEMP.
RANGE (
o
C)
-40 to 85
-40 to 85
PACKAGE
28 Ld SSOP
Tape and Reel
PKG.
NO.
M28.15
Pinout
HFA3925
(SSOP)
TOP VIEW
GND
GND
GND
GND
GND
GND
GND
RX OUT
V
G2
1
2
3
4
5
6
7
8
9
28 GND
27 V
DD
TR
26 T/R CNTRL
25 RF OUT
24 GND
23 V
DD3
22 GND
21 GND
20 GND
19 GND
18 V
DD2
17 V
G3
16 GND
15 RF IN
Functional Block Diagram
T/R CNTRL
V
DDX
(+)
V
GX
(-)
STAGE BIAS CONTROL
RX OUT
RF IN
STAGE 1
STAGE 2
STAGE 3
RF_OUT
TO
ANTENNA
GND 10
V
DD1
11
GND 12
GND 13
V
G1
14
2-179
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
漏
Intersil Corporation 1999
PRISM廬 is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.

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