MAX2264
Description
The MAX2264/MAX2265/MAX2266 power amplifiers are designed for operation in IS-98-based CDMA, IS-136based TDMA, and PDC cellular telephones operating in the 900MHz range. When matched for CDMA operation and biased with margin over the adjacent and alternate channel specification (-45d Bc/-56d Bc), the amplifiers achieve 28d Bm output power with 37% efficiency (MAX2265). At +16d Bm output- a very mon power level for CDMA phones- the MAX2265 still has 7% efficiency, yielding excellent overall talk time. At the same power level, the MAX2264/MAX2266 have an unprecedented 12%/17% efficiency, while still obtaining 32%/32% efficiency at maximum output power.
The MAX2264/MAX2265/MAX2266 have internally referenced bias ports that are normally terminated with simple resistors. The bias ports allow customization of ACPR margin and gain. They can also be used to “throttle back” bias current when generating low power levels. The MAX2264/MAX2265/MAX2266 have excellent gain stability over...
