The document introduces a dual-channel zero-IF mobile TV tuner IC, MTV320, for satellite DMB receivers with diversity function. The features include a wide operating frequency range, low noise figure, wide dynamic range, low power consumption, high frequency resolution, and I2C serial bus interface. It is ideal for portable applications such as mobile phones, notebook PCs, and PDAs.
The MTV320 is a highly integrated dual zero‑IF tuner IC designed for digital multimedia broadcasting (DMB) diversity receivers via satellite. It operates from 2605 MHz to 2655 MHz, includes an LNA, direct‑conversion mixers, an on‑chip low‑phase‑noise VCO, and a 20‑bit sigma‑delta fractional‑N PLL with 36 Hz resolution. Features such as a low noise figure (2.0 dB), wide dynamic range (0 dBm ~ ‑98 dBm), and a channel‑select filter with 50 dB adjacent‑channel rejection make it suitable for portable applications.
Typical applications include satellite DMB mobile phones, portable receivers in notebooks, PDAs, and vehicular systems. The IC consumes less than 140 mW in diversity operation and is offered in a compact 36‑QFN package (5 × 5 mm), simplifying board layout with no external capacitors needed. It uses a standard PC serial bus interface for easy integration.
| Operating frequency range | 2605 ~ 2655 MHz |
|---|---|
| Low noise figure | 2.0 dB |
| Wide dynamic range | 0 dBm ~ -98 dBm |
| Power dissipation (diversity operation) | 140 mW |
| Channel‑select filter rejection | 50 dB at 25 MHz |
| PLL frequency resolution | 36 Hz |
| Package | 36‑QFN (5 x 5 mm) |
| Interface | PC serial bus |
The MTV320 operates from 2605 MHz to 2655 MHz.
The device has a low noise figure of 2.0 dB.
It consumes less than 140 mW when operating with diversity.
The IC is supplied in a small 36‑QFN package measuring about 5 × 5 mm.