Built on the success of UW2451 and UW2452, UBEC's 11b/g and 11a/b/g transceivers respectively, the UW2453/UW2453L made a giant step forward by integrating the power amplifier and the PLL loop filter while reducing the die size and power consumption. UW2453/UW2453L feature an advanced transceiver architecture that integrates a PA, receive/transmit RF front end, VCO, Sigma-Delta PLL, loop filter, VGA, RSSI, RX/TX filter and advanced calibration circuits such as VCO calibration on a single chip. As such, the RF BOM is dramatically reduced by 50% from the previous design. UW2453/UW2453L further improve the RX DC cancellation gain settling time by incorporating UBEC's patented circuit design.
UW2453/UW2453L have a noise figure of 3 dB and consume 76 mA in the receive mode. At +18 dBm power output, UW2453 consumes 228 mA while the corresponding value is 160mA at +14 dBm power output for UW2453L. This makes UW2453/UW2453L highly desirable for WLAN products especially for portable devices such as VoIP in a mobile phone where the power consumption is a very critical consideration.
UW2453/UW2453L are housed in a 48-pin 7x7 mm2 QFN package. Similar to UW2451 and UW2452, UW2453/UW2453L require no external RF calibration to make an 802.11b/g WiFi and FCC compliant product.
Founded in July 2002, Uniband Electronic Corp (UBEC) is headquartered in Hsinchu, Taiwan with US office in Silicon Valley, U.S.A. UBEC is dedicated to offer a wide range of wireless products such as 802.11b/g and 802.11a/b/g compliant transceivers and PAs, 802.15.4 single chip, LNB gain blocks for satellite and STB applications. UBEC places a high priority on customer relationship and support. UBEC provides not only ICs, but also full reference designs and technical services essential in making our customers' success on the wireless market. For more information about UBEC, please visit http://www.ubec.com.tw .
Web site: http://www.ubec.com.tw//