General Description

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 output power from a +3.6V supply or +28dBm from a +2.7V supply.

Features

♦ 800MHz to 1000MHz Operation

♦ High Output Power at 836MHz

+32.5dBm at +5.0V

+30dBm at +3.6V

+29dBm at +3.0V

+28dBm at +2.7V

♦ +2.7V to +5.5V Single-Supply Operation

♦ Automatic Power-Up/Power-Down Ramp

♦ Direct On/Off Keying (OOK) without Intersymbol Interference or VCO Pulling

♦ 37dB Power-Control Range

♦ 47 Efficiency

♦ <1µA Supply Current in Shutdown Mode

♦ Small 20-Pin TSSOP Package with Heat Slug

Applications

900MHz ISM-Band Applications

Two-Way Pagers

Analog Cellular Phones

Microcellular GSM (Power Class 5)

Wireless Data Networks