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STV6110A-STV6110AT
8PSK/QPSK low-power 3.3 V satellite tuner IC
Data BriefAugust 2008 Rev 1 1/5
STV6110A8PSK/QPSK low-power 3.3 V satellite tuner IC
Features RF to baseband 8PSK/QPSK direct conversion Single 3.3 V DC supply Input frequency range 950 MHz to 2150 MHz Supports 1 to 45 Msymbol/s On-chip RF loop-through Fully integrated PLL frequency synthesizer for
DVB-S2 (including loop filter) Extremely low phase noise compliant with
DVB-S2 requirements Low external component count Low power consumption 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 filters) Compatible with 5-V and 3.3 V I2 C bus
DescriptionThe STV6110A satellite tuner is a direct-
conversion (zero IF) receiver 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 baseband gain can be varied
by programming a register via the I2 C bus.
The LO signals are provided by an integrated PLL
which contains an on-chip voltage controlled
oscillator (VCO) meeting stringent phase noise
requirements. The PLL loop filter is integrated.
The LO frequencies are programmable.
The comparison frequency for the phase-
frequency detector (PFD) is generated by dividing
the crystal oscillator reference frequency. The
crystal frequency can be from 16 MHz to32 MHz
depending on application.
Application STV6110A2/5
1 Application
Figure 1. Application diagram for DVB-S2 front-end system
STV6110A Ordering information3/5
2 Ordering information
Table 1. Ordering information
Revision history STV6110A4/5
3 Revision history
Table 2. Document revision history
STV6110A5/5
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