The MAX3543 is a broadband single-conversion television tuner from Maxim Integrated. It supports analog (PAL, SECAM) and digital (DVB-T, GB20600) television standards and covers the frequency range from 47MHz to 862MHz. It outputs an IF signal at 36MHz. The MAX3543 includes a variable-gain low-noise input amplifier, an RF tracking filter, an image rejection mixer, a peak detector, an optional internal RF gain-control loop (RFAGC), a VCO with fractional-N PLL, an IF bandpass filter, an IF variable-gain amplifier, separate analog and digital IF outputs, and a crystal oscillator.
The MAX3543 is a hybrid broadband single‑conversion television tuner that supports both analog (PAL, SECAM) and digital (DVB‑T, GB20600) standards. It receives the full TV spectrum from 47 MHz to 862 MHz and converts the selected channel to a 36 MHz intermediate frequency.
The document provides detailed electrical characteristics, pin descriptions, register maps, typical operating curves, and application guidance for configuring RF input selection, gain control, and tracking filters via an I²C‑compatible serial interface. This manual is written in Chinese.
| Frequency range | 47 MHz – 862 MHz |
|---|---|
| IF output frequency | 36 MHz |
| Noise figure | 4 dB |
| Image rejection | > 70 dB |
| Power dissipation | 745 mW |
| Supply voltage | 3.1 V – 3.5 V |
| Maximum RF input power | +10 dBm |
| Package | 6 mm × 6 mm thin QFN |
The device operates from 0 °C to +70 °C.
The I²C interface supports clock frequencies up to 400 kHz.
The MAX3543 includes 18 programmable registers.
The device requires a supply voltage between 3.1 V and 3.5 V.