Channel Receiver. AVL2108 Datasheet

AVL2108 Receiver. Datasheet pdf. Equivalent

Part AVL2108
Description DVB-S2/DVB-S Channel Receiver
Feature AVL2108 DVB-S2/DVB-S Channel Receiver Data Sheet Description The AVL2108 is a highly integrated DV.
Manufacture Availink
Datasheet
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AVL2108 DVB-S2/DVB-S Channel Receiver Data Sheet Descripti AVL2108 Datasheet
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AVL2108
AVL2108
DVB-S2/DVB-S Channel Receiver Data Sheet
Description
The AVL2108 is a highly integrated DVB-S2
and DVB-S channel receiver IC. It converts
a baseband analog IQ signal from a satellite
tuner and performs a set of sophisticated
demodulating and decoding operations to
output an MPEG video/audio stream. The
AVL2108 provides simple and flexible
control via a standard two-wire bus. A
simplified block diagram of the device is
shown in Figure 1-1.
The AVL2108 includes dual, differential,
high performance, analog to digital
converters (ADC) with a built-in
compensation circuit for DC offset and IQ
imbalance. An RF AGC output is provided
for simple gain control of the satellite tuner
via an RC network.
After passing a timing recovery loop and
frequency recovery loop, the signal samples
are further processed by an equalizer to
output decision bits to an FEC decoder. The
decoded bits are finally packetized in the
MPEG interface block.
The configuration of the AVL2108 is easily
performed through a set of registers via a
standard two-wire bus. To simplify the
interface to the host system, this same two-
wire bus is used to communicate with the
separate tuner two-wire bus and the
DiSEqC™ interface to the LNB.
The AVL2108 can achieve fast acquisition at
frequency offsets up to 5 MHz and maintains
synchronization under the most severe front-
end phase noise.
Applications
Digital satellite receiver for standard and
high definition TV
High speed satellite data receiver
Features
High performance QPSK/8PSK satellite
TV receiver
80 pin LQFP in 12x12 mm package
Low 420-470 mW power (clear sky)
Low 630-820 mW power (threshold)
DVB-S2:
Data Rate: 1-45 Msps
Code Rates: 1/2, 3/5, 2/3, 3/4, 4/5,
5/6, 8/9 and 9/10
Roll-off factors for pulse shaping:
0.2, 0.25 and 0.35
DVB-S:
Data Rate: 1-45 Msps
Code Rates: 1/2, 2/3, 3/4, 5/6, 7/8
DIRECTV mode support
Directly interfaces with tuner for easy
implementation
Integrated dual A/D converters
Fast automatic blind scan of symbol
rates and carrier frequencies
Carrier frequency acquisition range:
±5MHz
Signal quality and BER monitors
Equalizer compensates for channel
impairment
Standard two-wire serial bus with four
selectable addresses for easy chip
configuration
DiSEqC™ 2.x compatible with LNB
controller
Standard MPEG-2 transport output
parallel and serial interfaces
August 2009
Availink Inc. Proprietary and Confidential
10028-2.2
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AVL2108
AVL2108
Information furnished by Availink is believed to be accurate and reliable. However, no responsibility is assumed
by Availink for its use, nor for any infringements of patents or other rights of third parties that may result from its
use. Specifications subject to change without notice. No license is granted by implication or otherwise under any
patent or patent rights of Availink. Trademarks and registered trademarks are the property of their respective
owners.
20201 Century Blvd. Suite 160
Germantown, MD 20874 USA
Tel: 301-515-6716
Fax: 301-916-6199
www.availink.com
© 2009 Availink Inc. All rights reserved.
August 2009
Availink Inc. Proprietary and Confidential
10028-2.2
2/33





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