General Description
The MAX2264/MAX2265/MAX2266 power amplifiers are designed for operation in IS-98-based CDMA, IS-136-based 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 (-45dBc/-56dBc), the amplifiers achieve 28dBm output power with 37% efficiency (MAX2265). At +16dBm output—a very common 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.

Features
♦ Low Average CDMA Current Consumption in
   Typical Urban Scenario
   55mA (MAX2264)
   90mA (MAX2265)
   40mA (MAX2266)
♦ 0.5µA Shutdown Mode Eliminates External
   Supply Switch
♦ ±0.8dB Gain Variation Over Temperature
♦ No External Reference or Logic Interface
   Circuitry Needed
♦ Supply Current and ACPR Margin
   Dynamically Adjustable
♦ +2.7V to +5V Single-Supply Operation
♦ 37% Efficiency at +2.7V Operation

Applications
   Cellular-Band CDMA Dual-Mode Phones
   Cellular-Band PDC Phones
   Cellular-Band TDMA Dual-Mode Phones
   Dual-Mode Phones
   2-Way Pagers
   Power-Amplifier Modules