The MAX2009 adjustable RF predistorter is designed to improve power amplifier (PA) adjacent-channel power rejection (ACPR) by introducing gain and phase expan- sion in a PA chain to compensate for the PA’s gain and phase compression.
The MAX2009 adjustable RF predistorter is designed to improve power‑amplifier adjacent‑channel power rejection (ACPR) by providing configurable gain and phase expansion. It operates from 1200 MHz to 2500 MHz, supports a maximum input power of +23 dBm, and can deliver up to 12 dB of ACPR improvement in static or closed‑loop modes.
The device is supplied in a 28‑pin thin QFN‑EP package (5 mm × 5 mm) and is rated for an extended temperature range of –40 °C to +85 °C. Typical power consumption is 75 mW at a 5 V supply. Detailed electrical characteristics, gain/phase control sections, and example application circuits are provided in the datasheet.
| Operating Frequency Range | 1200 MHz – 2500 MHz |
|---|---|
| Maximum Input Power | +23 dBm |
| Gain Expansion | Up to 7 dB |
| Group Delay | < 1.3 ns (combined) |
| Supply Voltage | 4.75 V – 5.25 V |
| Power Consumption | 75 mW typ |
| Package | 28‑pin thin QFN‑EP (5 mm × 5 mm) |
| Operating Temperature Range | –40 °C to +85 °C |
The MAX2009 can handle an input power level up to +23 dBm.
It operates from 1200 MHz to 2500 MHz.
The device provides up to 7 dB of gain expansion.
It can expand phase by up to 24°.