The MAX2680/MAX2681/MAX2682 are miniature, low-cost, low-noise downconverter mixers designed for low-voltage operation, making them ideal for use in portable communications equipment. They operate with RF input frequencies between 400MHz and 2500MHz, and downconvert to IF output frequencies between 10MHz and 500MHz. These devices can be powered directly from a single +2.7V to +5.5V supply. They offer a wide range of supply currents and input intercept (IIP3) levels to optimize system performance. Additionally, each device features a low-power shutdown mode in which it typically draws less than 0.1µA of supply current.
The MAX2680, MAX2681 and MAX2682 are miniature, low‑cost, low‑noise down‑converter mixers designed for portable communications equipment. They operate from a single +2.7 V to +5.5 V supply and support RF input frequencies from 400 MHz to 2.5 GHz, converting to IF output frequencies between 10 MHz and 500 MHz.
The datasheet provides detailed electrical characteristics, typical operating curves, pin descriptions, and recommended PCB layout practices to achieve optimal performance, including low‑power shutdown mode (<0.1 µA) and impedance‑matching guidance.
| Supply Voltage Range | +2.7 V to +5.5 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| RF Input Frequency Range | 400 MHz to 2.5 GHz |
| IF Output Frequency Range | 10 MHz to 500 MHz |
| Noise Figure (MAX2680 at 900 MHz) | 6.3 dB |
| Package Type | 6‑pin SOT‑23 |
| Typical Operating Supply Current (MAX2680) | 8.7 µA |
They operate from a single supply voltage of +2.7 V to +5.5 V.
The RF input frequency range is 400 MHz to 2.5 GHz.
The devices are offered in a 6‑pin SOT‑23 surface‑mount package.