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Infineon Technologies Electronic Components Datasheet

PMB8825 Datasheet

Dual-Band Power Amplifier

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Dual-Band Power Amplifier for
WLAN Systems
The Infineon dual-band Power Amplifier PMB 8825
is an extremely linear, high power SiGe amplifier
for Wireless LAN applications and is fully compli-
ant with IEEE802.11a, 11b and 11g standards with
data rates up to 54 Mbit/s in 802.11a and 11g mode.
The PMB 8825 is designed to form an Infineon
WLAN chipset in combination with the PMB 8680
dual-band RF Transceiver, the PMB 8787 dual-band
Modem IC (PHY) and the PMB 8789 MAC IC.
PRODUCT BRIEF
WirelessLAN
Features
Applications
Enhanced bipolar technology (SiGe)
High data-rate wireless LAN
Dual-band and dual-mode solution
PC card wireless LAN adapters
Single +3.3 V supply voltage
(Mini) PCI wireless LAN cards
Highly linear PA for OFDM and DSSS/CCK
CardBus wireless LAN adapters
Low EVM for 64 QAM/54 Mbit/s
Compact flash wireless LAN cards
Low power droop
USB wireless LAN adapters
Analog power control for both bands
Wireless LAN modules, access points, bridge
Digital band select (2.4 GHz/5 GHz)
products, and point-to-multipoint systems
Digital standby mode
Integrated power detector with buffer for power
control loop
Operating ambient temperature: -40 ... +85°C
Small size VQFN-24 package with heat sink
PMB 8825
Dual-Band Power Amplifier
Never stop thinking.


Infineon Technologies Electronic Components Datasheet

PMB8825 Datasheet

Dual-Band Power Amplifier

No Preview Available !

PRODUCT BRIEF
RF
Input
5 GHz
VCC5
VCC6
BREF
1st Driver
Stage
Interstage
Matching
2nd Driver
Stage
Interstage
Matching
Output
Stage
5 GHz
Diode + Temp.
Compensation
VCC
Enable
Band
Select
Power
Control
Analog Power
Control
Standby
Band
Gap
Band Select
Biasing
RF
Input
2 GHz
1st Driver
Stage
Interstage
Matching
Interstage
Matching
2nd Driver
Stage
2 GHz
Output
Stage
VCC1
VCC2
Diode + Temp.
Compensation
RF
Output
5 GHz
Power
Detect
RF
Output
2 GHz
Block Diagram
Frequency Bands
2.4 GHz ... 2.5 GHz Band
- Psat = 30 dB
- P1dB = 27 dBm
- Gain = 31 dB
5.15 GHz ... 5.825 GHz Band
- Psat = 27 dBm
- P1dB = 24 dBm
- Gain = 22 dB
Example: Power Control Loop for WLAN System (simplified)
PMB 8787
BB-PHY IC
HW + SW
ADC
Mixed
Signal
Bus
DAC
RF-Transceiver IC
5 GHz PGC
PMB 8825
RF
2 GHz PGC
PMB 8680
Biasing
OP
Diode
Diode
Logic
OP
OP
PA_PDT PA_ON PA_ON
PC PAON PDT
50
Fronted
50
Fronted
Analog power control with a 10 dB dynamic range to optimize efficiency at all power levels.
Type
WLAN Power Amplifier
Sales Code
PMB 8825
Package
P-VQFN-24
How to reach us:
http://www.infineon.com
Published by
Infineon Technologies AG,
St.-Martin-Strasse 53,
81669 München
© Infineon Technologies AG 2003. All Rights Reserved.
Attention please!
The information herein is given to describe certain components
and shall not be considered as warranted characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not
limited to warranties of non-infringement, regarding circuits,
descriptions and charts stated herein.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms
and conditions and prices please contact your nearest
Infineon Technologies Office in Germany or our
Infineon Technologies Representatives worldwide.
Warnings
Due to technical requirements components may contain dan-
gerous substances. For information on the types in question
please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-
support devices or systems with the express written approval
of Infineon Technologies, if a failure of such components can
reasonably be expected to cause the failure of that life-support
device or system, or to affect the safety or effectiveness of that
device or system. Life-support devices or systems are intend-
ed to be implanted in the human body, or to support and/or
maintain and sustain and/or protect human life. If they fail, it is
reasonable to assume that the health of the user or other
persons may be endangered.
Published by Infineon Technologies AG
Printed in Germany
PS 03031. NB


Part Number PMB8825
Description Dual-Band Power Amplifier
Maker Infineon Technologies AG
Total Page 2 Pages
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