The MAX2112 is a low‑cost, direct‑conversion tuner IC designed for satellite set‑top and VSAT applications, supporting 8PSK and DVB‑S2 signals. It converts LNB signals to baseband using a broadband I/Q downconverter and includes integrated LNA, RF variable‑gain amplifier, mixers, and programmable low‑pass filters.
Key features include a frequency range of 925 MHz‑2 175 MHz, over 80 dB gain control, monolithic VCO with low phase‑noise, a 2‑wire I²C serial interface, low‑power standby mode, and a compact 28‑pin thin QFN package.
| Frequency Range | 925 MHz to 2 175 MHz |
|---|---|
| Gain Control Range | >80 dB |
| Low Phase Noise | -97 dBc/Hz at 10 kHz |
| Supply Voltage | 3.13 V to 3.47 V |
| Operating Temperature | -40 °C to +85 °C |
| Package | 28‑Pin Thin QFN |
The MAX2112 operates from 925 MHz up to 2 175 MHz.
The device is specified for a supply voltage between 3.13 V and 3.47 V.
It provides more than 80 dB of gain control range.
The tuner is offered in a 28‑pin thin QFN package.