The MAX2235 is a low-voltage, silicon RF power amplifier 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 MAX2235 is a low‑voltage silicon RF power amplifier designed for the 900 MHz band. It operates from a single +2.7 V to +5.5 V supply, making it suitable for battery‑powered devices such as two‑way pagers and ISM‑band transmitters.
Key features include a 37 dB gain‑control range, autoramping power‑up/down, shutdown current below 1 µA, and typical efficiency of 47 % at +30 dBm output. The device is offered in a thermally enhanced 20‑pin TSSOP‑EP package with a heat slug.
| Supply Voltage Range | +2.7 V to +5.5 V |
|---|---|
| Typical Output Power (3.6 V) | +30 dBm (1 W) |
| Gain Control Range | 37 dB |
| Efficiency at +30 dBm | ≈47 % |
| Shutdown Supply Current | < 1 µA |
| Operational Frequency Range | 800 MHz – 1000 MHz |
It operates from a single supply of +2.7 V to +5.5 V.
The device delivers about +30 dBm (1 W) of output power.
Shutdown current is typically below 1 µA.
The gain can be adjusted over a 37 dB range.