MAX3541 DVB-T/PAL Tuner

MAX3541MAX3541 DVB-T/PAL Tuner

Abstract: The MAX3541 is an integrated, single-conversion terrestrial tuner IC for DVB-T and PAL. The device is designed to convert input signals in the VHF-Low, VHF-High, and UHF bands to an IF frequency of 36MHz. The MAX3541 is designed for television, analog/digital terrestrial receiver, and digital set-top box applications. Figure 2. Tuner system block diagram. DVB-T system performance for the MAX3541 with a DVB-T demodulator complies with the NorDig 1.0.2 specification. Typical UHF sensitivity is -81dBm. Figure 3 shows system immunity to digital interferers. These measurements are for DVB-T with 64QAM, 2/3 code rate, 8MHz bandwidth, 8k mode, and 1/4 guard interval.The MAX3541 is a complete single-conversion television tuner designed for use in analog/digital terrestrial applications and digital set-top boxes. This television tuner draws only 760mW of power from a +3.3V supply voltage.The MAX3541 is designed to convert PAL or DVB-T signals in the 47MHz to 68MHz, 174MHz to 230MHz, and 470MHz to 862MHz bands to an IF frequency of 36MHz.The MAX3541 includes a variable-gain low-noise amplifier, multiband tracking filters, a harmonic-rejection mixer, a low-noise IF amplifier, an IF power detector, and a variable-gain IF amplifier. The MAX3541 also includes fully monolithic VCOs and tank circuits, as well as a complete frequency synthesizer. This highly integrated design allows for low-power tuner-on-board applications without the cost and power-dissipation issues of dual-conversion tuner solutions. The MAX3541 is specified for operation in the -40°C to +85°C temperature range and is available in a leadless 48-pin flip-chip (fcLGA) package.