The MAX2831/MAX2832 are direct conversion, zero-IF, RF transceivers designed specifically for 2.4GHz to 2.5GHz 802.11g/b WLAN applications.
The MAX2831 and MAX2832 are direct‑conversion, zero‑IF RF transceivers designed for 2.4 GHz to 2.5 GHz 802.11g/b WLAN applications. The MAX2831 includes an on‑chip power amplifier, while the MAX2832 provides the same RF front‑end without the PA. Typical applications include Wi‑Fi, PDA, VoIP, cellular handsets, wireless speakers, headphones, and general ISM‑band radios.
Key features include low‑power operation (62 mA receiver current), 2.6 dB noise figure, -76 dBm sensitivity, integrated sigma‑delta PLL with <20 Hz steps, on‑chip DC‑offset cancellation, and a small 48‑pin TQFN package (7 mm × 7 mm × 0.8 mm). The datasheet details absolute maximum ratings, DC/AC electrical characteristics, pin configuration, and package information.
| Operating Frequency Range | 2.4 GHz to 2.5 GHz |
|---|---|
| Supply Voltage (Transceiver) | 2.7 V to 3.6 V |
| Supply Voltage (PA) | 2.7 V to 4.2 V |
| Maximum Transmit Power | +18.5 dBm |
| Receiver Current | 62 mA |
| Receiver Noise Figure | 2.6 dB |
| Receiver Sensitivity | -76 dBm |
| RF Gain Control Range | 33 dB RF and 62 dB Baseband |
| RSSI Range | 60 dB per RF Gain Setting |
The devices operate from 2.4 GHz to 2.5 GHz.
The transceiver operates from 2.7 V to 3.6 V, while the PA runs from 2.7 V to 4.2 V.
The MAX2831 can deliver up to +18.5 dBm of transmit power.