Avago Technologies, a supplier of analog interface components for communications, industrial and consumer applications, has announced that its two power amplifiers based on the fifth generation of CoolPAM technology comply with the new talk time requirements defined by major Asian mobile carriers. The ACPM-7822, which supports Japan CDMA band, and ACPM-7824, which supports CDMA cell band, improve consecutive usage time for mobile handsets.
As cellular coverage in urban and suburban networks improves, particularly in Japan and Korea, the statistical probability profile of handset output power has shifted to levels lower than the standard profile set by the CDMA Development Group (CDG). As a result, handsets tend to operate more often at lower power output levels. Improved efficiency at these lower power levels will increase talk time.
To take advantage of these newer networks, multiple Asian mobile markets have set new talk time profile requirements. The fifth generation of CoolPAM power amplifiers is designed to support high, mid and active-bypass power modes and addresses these requirements. Its switchless design enables the power amplifier to consume very low quiescent current levels and operate in active bypass mode at up to 11 dBm. The ability to operate at multiple power modes significantly lowers the average current of CDMA transmitter usage and thus extends battery life by as much as 30 percent over conventional power amplifiers.