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Zarlink Semiconductor
Zarlink Semiconductor

MT352 Datasheet Preview

MT352 Datasheet

COFDM Demodulator

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MT352 pdf
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MT352
COFDM Demodulator
Data Sheet
Features
• Nordig II and ETSI 300 744 compliant
• Superior Single Frequency Network performance
• Unique active Impulse-Noise filtering
• Single SAW operation
• Automatic co-channel and adjacent-channel
interference suppression
• Clock generation from single low-cost 20.48 MHz
crystal or external 4 or 27 MHz clock
• IF sampling at 4.57, 36.17 or 43.5 MHz from a
single crystal frequency
• Channel bandwidth of 6, 7 & 8 MHz
• Blind acquisition capability (including 2 K / 8 K
mode detect)
• Automatic spectral inversion detection
• Fast auto-scan and acquisition technology
• Very low software overhead
• Dual AGC control option
• Access to channel SNR, pre- and post-Viterbi bit
error rates
• Compact 64 pin LQFP
• Less than 0.22 W power consumption
• Standby and sleep options
Applications
• Set-top boxes
• Integrated digital televisions
• Personal video recorders
• Terrestrial PC reception
• Mobile and portable applications
February 2005
Ordering Information
MT352/CG/GP1N 64 Pin LQFP Trays
MT352/CG/GP1Q 64 Pin LQFP Tape & Reel
MT352/CG/GP2Q 64 Pin LQFP* Tape & Reel
MT352/CG/GP2N 64 Pin LQFP* Trays
* Pb Free Matte Tin
0oC to +70oC
Zarlink evaluation kits include application board, TNIM
and supporting software based on industry standard
operating systems. Device drivers are also available
enabling rapid product development and reduction in
time to market.
Description
MT352 is a superior third generation Coded
Orthogonal Frequency Division Multiplex (COFDM)
television demodulator that is both Nordig II and DVB
(as defined in ETS 300 744 specification) compliant. It
can be used in either 2 K or 8 K modes with 6, 7 or
8 MHz channels and is capable of addressing all
modes of transmission.
The device includes a high performance 10-bit A/D
converter capable of accepting direct IF at 36.17 or
43.75 MHz. Sampling rates required for both these
frequencies in 6,7 or 8 MHz OFDM channels can be
generated from a single 20.48 MHz crystal.
Alternatively, there is provision to replace this crystal
with a 4 or 27 MHz external clock input.
RF in
ADC
IF to
Baseband
conversion &
Interpolator
AGC
Impulse
Suppression
Secondary
2-wire bus
Tuner control
FFT
Symbol,
Carrier &
Timing
Recovery
Pilot &
Channel
Processor
Symbol & Bit
De-interleaver
& Demapper
FEC
MPEG
TS
Control
engine
Primary
2-wire bus
Figure 1 - Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2003-2005, Zarlink Semiconductor Inc. All Rights Reserved.



Zarlink Semiconductor
Zarlink Semiconductor

MT352 Datasheet Preview

MT352 Datasheet

COFDM Demodulator

No Preview Available !

MT352 pdf
MT352
Data Sheet
Unique algorithms that actively filter out impulse noise, without affecting normal performance, have been
implemented. This reduces the interference effect from vehicles and electrical appliances, which is known to have
significant detrimental effect on the quality of digital TV reception.
Programming is simplified utilizing a high level command driven interface. A sophisticated engine controls all
acquisition and tracking operations as well as controlling the tuner via a 2-wire bus. Any frequency range can be
automatically scanned for digital TV channels. This mechanism ensures minimal interaction, maximum flexibility,
fastest acquisition and the fastest auto scan capability of any chip in the market.
Blind acquisition mode enables automatic detection of all OFDM signal parameters, including mode, guard and
spectral inversion. The frequency capture range is sufficient to compensate for the combined offset introduced by
the tuner and broadcaster.
The device is packaged in a 64 pin LQFP and consumes less than 220 mW of power.
MT352 CG
Pin 1 Corner
YYWW*W
Figure 2 - Package Outline
2
Zarlink Semiconductor Inc.


Part Number MT352
Description COFDM Demodulator
Maker Zarlink Semiconductor
Total Page 24 Pages
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