3.6v, 1w Autoramping Power Amplifier For 900mhz Applications Integrated Products

The MAX2235 low-voltage, silicon RF Power Amplifier (PA) is designed for use in the 900MHz frequency band. It operates directly from a single +2.7V to +5.5V supply, making it suitable for use with 3-cell NiCd or 1-cell Li-Ion batteries. The device delivers +30dBm (1W) typical out- put power from a +3.6V supply or +28dBm from a +2.7V supply. The MAX2235s gain is adjustable over a 37dB range. A power-control pin controls gain and bias to maintain optimum efficiency, even at lower output power levels, thus extending the operating life of the battery. At +30dBm output power, efficiency is typically 47%. An additional power-saving feature is a shutdown mode that typically reduces supply current below 1A. A key feature of this PA is its autoramping capability. During turn-on and turn-off periods, the RF envelope is controlled to approximate a raised cosine on the rising and falling edge, thereby minimizing transient noise and spectral splatter. The ramp time is set by selecting the value of an external capacitor. The MAX2235 is intended for use in constant envelope applications such as AMPS, two-way paging, or FSK- based Communications in the 900MHz ISM band. The device is available in a thermally enhanced 20-pin TSSOP package with a heat slug. By Maxim Integrated Products
MAX2235 's PackagesMAX2235 's pdf datasheet

MAX2235 Pinout, Pinouts
MAX2235 pinout,Pin out
This is one package pinout of MAX2235,If you need more pinouts please download MAX2235's pdf datasheet.

MAX2235 Application circuits
MAX2235 circuits
This is one application circuit of MAX2235,If you need more circuits,please download MAX2235's pdf datasheet.

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