The MAX2233EEE+ from Maxim Integrated Products is a 900MHz ISM-band, 250mW power amplifier with analogue or digital gain control in 16 pin QSOP package. This low voltage, silicon RF power amplifier is designed for use in 900MHz ISM band. It is powered directly from a 3-cell NiCd or a 1-cell Lithium-Ion battery. Device typically delivers 250mW (+24dBm) of output power at 915MHz from a single +3.6V supply or 150mW (+22dBm) from a single +2.7V supply. At +24dBm output power, power-added efficiency (PAE) is 44%. The MAX2233 provides 24dB of gain which is adjustable over a continuous 24dB span in two 10dB steps via the 2bit programmable gain-control DAC of the MAX2233. It feature a low power shutdown mode which typically draws less than 1µA of supply current saving power during 'idle slots' in time-division multiple-access (TDMA) systems. It is used in 900MHz ISM band, digital cordless phones, wireless data, FM analogue transmitters and 868MHz European ISM band.

• 2.7V to 5.5V single supply operation
• Operating temperature range from -40°C to 85°C
• Frequency range from 902MHz to 928MHz, 24dB power gain
• 250mW (+24dBm) output power at 915MHz from 3.6V supply
• 44% power added efficiency, 52dB off-isolation at active low SHDN = D0 = D1 = GND
• Three levels of digitally programmed power gain in 10dB Step
• Thermal shutdown
• Programmable thermal shutdown timeout period
• 0.2µA low power shutdown mode
• Low ?VWSR in standby and shutdown modes

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