Toshiba based its new TA4401CT power amplifier on three cascaded RF stages that target linearity, efficiency, and low power in wireless applications in bands ranging from 1.9 to 2.5 GHz. The targets include PHS (personal-handy-system) handsets, Bluetooth products, and 802.11b/g wireless-LAN applications. In an application such as 802.11g, the typical power draw is a miserly 125 mA. In PHS, a popular, low-cost cellular standard in China, the amplifier offers as much as 23 dBm output power. In shutdown mode, leakage is approximately 1 nA. Available in a 16-pin chip-scale package, the SiGe (silicon-germanium) power amp sells for $1 (sample quantities). Volume production will begin in the second quarter.

Toshiba Corp, www.toshiba.com.