STV6120 - STMicroelectronics

STV6120 8PSK/QPSK low-power 3.3-V dual wide-band satellite tuner IC

The STV6120 satellite tuner is a quad-input dual direct-conversion (zero-IF) wideband satellite tuner intended for digital set-top boxes and similar applications. RFAin RFBin VLNA + Matrix 4:2 PLL1 +dividers1 DC offset compensation 1 QP1 QN1 IN1 IP1 QP2 QN2 IN2 IP2 RFCin RFDin AGC1 AGC2 XTAL_IN XTAL_INN XTAL_OUT XTAL Amplifier PLL2 + dividers2 DC off.

Features

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■ Low power consumption Compatible with 5- and 3.3-V I2C bus Four VLNA inputs On-chip 4:2 matrix Input frequency range 250 MHz to 2150 MHz Two independently programmable tuners RF to baseband direct conversion Single 3.3-V DC supply Fractional N synthesizers Extremely low phase noise, compliant with DVB-S2 requirements Flexible crystal frequency output to drive the demodulator IC Continuously variable gain: 0 to 65 dB Additional and programmable gain on baseband amplifier: 0 to 16 dB Programmable 5- to 36-MHz cut-off frequency (Butterworth 5th-order baseband filter.