Product category:
Communications ICs (Wireless)
News Release from: SiGe Semiconductor | Subject: SE2522L
Edited by the Electronicstalk Editorial
Team on 14 August 2002
Power detector boosts amplifier
performance
A new highly linear 2.4GHz power amplifier claims to deliver the industry's best combination of performance and power efficiency to IEEE802.11b systems.
A new highly linear 2.4GHz power amplifier claims to deliver the industry's best combination of performance and power efficiency to IEEE802.11b systems The device combines an efficient silicon-germanium architecture with power control circuitry to reduce current consumption by as much as 50% compared with competitors, while achieving superior power added efficiency that ensures reliable transmissions over an extended range
This article was originally published on Electronicstalk on 24 Jun 2008 at 8.00am (UK)
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SiGe's SE2522L is sampling now, and is expected to drive 802.11b-enabled laptop PCs, computer peripherals, cellular handsets, and other handheld computing devices by year end.
The SE2522L is the latest addition to SiGe Semiconductor's RangeCharger portfolio of wireless power amplifiers and front-end devices.
It is based on the popular SE2520L, launched last December.
Further reading
WLAN front ends shrink for portable appeal
Complete 802.11a/b/g/n WLAN RF front-end modules provide all the functionality required between the transceiver and the antenna in dual-band Wi-Fi systems.
Power amplifiers cut Wi-Fi costs
SiGe Semiconductor has released two new power amplifiers that provide manufacturers with the lowest cost route to developing Wi-Fi systems.
RF front-end module optimises Wi-Fi systems
The SE2593A delivers a complete 2.4 and 5GHz WLAN multiple input, multiple output (MIMO) RF solution including all of the circuitry required between the transceiver and the antennas
Since its launch, the SE2520L has been selected by major manufacturers for 2.4GHz products, including 802.11b reference designs and cordless phones, which will be on the market later this year.
SiGe's SE2522L leverages the proven architecture of the SE2520L, adding a power detector to augment the performance and simplify design of WLAN systems based on a CMOS radio.
While CMOS radios are popular for their ability to meet low cost and high integration requirements, they produce variable power out that can affect the stability of WLAN transmissions.
SiGe Semiconductor eliminates the need for extra circuitry to correct this by integrating a power detector that ensures output power stability.
"Initial customer feedback of the SE2522L has been positive, and we are confident that the device will extend our penetration into the 802.11b market", said Bill Cuming, vice president optical, cable and components, SiGe Semiconductor.
"When choosing from the range of power amplifiers available on the market, customers no longer have to sacrifice current consumption for performance.
The SE2522L solves all of these requirements as an efficient, easy to implement solution".
SE2522L offers best combination of performance and power efficiency Capable of operating at a duty cycle of 100%, the SE2522L delivers up to +20dBm of linear output power with an adjacent-channel power ratio (ACPR) of less than -20dBm per 100kHz.
This superior power added efficiency is achieved through the combination of SiGe's silicon-germanium technology and linear analogue 0.1 to 1.6V control.
As a result, the SE2522L ensures stable performance and high signal integrity over the specified range, even in the crowded unlicensed 2.4GHz frequency band.
Unlike competitive offerings, the SE2522L achieves this performance without sacrificing power consumption.
The SE2522L operates at a typical current consumption of 110mA, which is as much as 50% less than competing solutions.
This results from integrated power-management control features as well as an efficient silicon germanium structure that provides high thermal conductivity and low junction temperature.
The device operates using a single 3.3V supply.
The SE2022L is supplied in a small-outline 8-lead LPCC package that is efficient for miniature designs.
A flip-chip package option will also be offered.
The device is available now in sample quantities.
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