(Hong Kong)
Product Summary
The stv6110a is an 8PSK/QPSK low-power satellite tuner IC dedicated to digital TV broadcasting. On the RF input is a low noise amplifier (LNA), with buffer to supply the RF output for loop-through, and a continuously variable gain LNA to ensure an optimal signal level for the two mixers. Each mixer, which down-converts the signal to baseband, is followed by a low-pass filter and amplifier. The stv6110a baseband gain can be varied by programming a register via the I2C bus. The comparison frequency for the phase-frequency detector (PFD) is generated by dividing the crystal oscillator reference frequency. The stv6110a crystal frequency can be from 16MHz to32MHz depending on application.
Features
stv6110a features: (1)RF to baseband 8PSK/QPSK direct conversion; (2)Single 3.3V DC supply; (3)Input frequency range 950MHz to 2150MHz; (4)Supports 1 to 45 Msymbol/s ; (5)On-chip RF loop-through; (6)Fully integrated PLL frequency synthesizer for DVB-S2 (including loop filter); (7)Extremely low phase noise compliant with DVB-S2 requirements; (8)Low external component count; (9)Low power consumption; (10)Flexible crystal frequency output to drive the demodulator IC; (11)Continuously variable gain: 0 to 65 dB ; (12)Additional and programmable gain on baseband amplifier: 0 to 16 dB; (13)Programmable 5- to 36-MHz cut-off frequency (butterworth 5th-order baseband filters); (14)Compatible with 5-V and 3.3V I2C bus.
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