The MAX2335 RF front-end receiver IC is designed for CDMA and OFDM applications in the 450MHz band. The MAX2335 includes a low-noise amplifier (LNA) with adjustable IIP3 to minimize desensitization due to cross-modulation in the presence of a large interfering signal. The mixer features differential IF outputs and is designed for high linearity and low noise, which is well suited for CDMA and OFDM applications. An on-chip frequency divider is included to allow the use of a standard 1GHz VCO. Alternatively, the divider can be bypassed for use with a lower-frequency VCO. The MAX2335 is available in a 28-pin TQFN package with exposed paddle and is specified for the -40°C to +85°C extended temperature range. The device is also offered in a lead-free package.
The MAX2335 is a 450 MHz RF front‑end receiver IC designed for CDMA and OFDM applications. It integrates a low‑noise amplifier (LNA) with adjustable IIP3 and a differential mixer, and includes an on‑chip frequency divider for use with standard 1 GHz VCOs. The device is offered in a 28‑pin thin QFN package with an exposed paddle and operates from –40 °C to +85 °C.
Key specifications include RF, LO, and IF frequency ranges, LNA gain and noise figure, and detailed pin descriptions for mode control, biasing, and signal routing. The datasheet also provides typical operating characteristics, S‑parameter data, recommended power‑supply layout, and package dimensions.
| RF Frequency Range | 420 to 470 MHz |
|---|---|
| LO Frequency Range | 500 to 660 MHz |
| IF Frequency Range | 80 to 190 MHz |
| Operating Temperature Range | -40°C to +85°C |
| Supply Voltage (VCC) | +2.9 V to +3.3 V |
It is available in a 28‑pin thin QFN (TQFN) package with an exposed paddle.
The recommended VCC range is +2.9 V to +3.3 V.
If the LO/2 input is driven low, the output equals the LO frequency; if driven high, the output is the LO frequency divided by two.