Ottawa, Ontario A 79-cent paper-thin semiconductor lends itself to wireless transmitters where battery life is paramount. RF IC maker SiGe Semiconductor, Inc. announces what it claims is the world's thinnest PA (power amplifier) for Wi-Fi systems.
Slated for 2.4-GHz band designs, the RangeCharger SE2523BU device comes in a miniature 16-pin 3 x 3-mm square QFN package. The SE2523BU paper-thin package touts a profile of just 0.5-mm (20-mils).
The SE2523BU is the newest addition to the company's existing SE2523x Series of power amplifiers, introduced last year.
SiGe says its ultra-thin design also reduces dissipation by 25% compared to competing products, making it eminently suitable for embedding into portable battery-powered consumer electronics. The SE2523BU also integrates digital-enable circuitry, a power detector, and biasing circuitry.
The SE2523BU typically draws 130-mA (at +18.5 dBm output power), and can operate from a single 3.3-V supply line.
In operation, the SE2523BU delivers up to +18.5-dBm power output (about 65-mW) with an EVM (error vector magnitude) spec of 2.5% (operating in IEEE-802.11g mode). All ACPR (adjacent channel power ratio) requirements are met while operating at +23-dBm output power (200-mW) in 802.11b mode.
The PA's power detector is also claimed to improve stability, since it's highly immune to mismatches; it exhibits less than 1.5-dB of variation with a 2:1 mismatch. The power detector stage also offers two selectable power detector slopes, permitting it to be used with multiple chipsets.
To review a datasheet, go to SiGe's Web site and register.
For more info contact SiGe Semiconductor, Inc., 1050 Morrison Dr., Suite 100, Ottawa, Ontario, Canada K2H 8K7. Phone: 613-820-9244. Fax: 613-820-4933. E-mail: firstname.lastname@example.org
SiGe Semiconductor, 613-820-9244, www.sige.com