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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.

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

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.

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

MT352

COFDM Demodulator

Data Sheet

Figure 1 - Block Diagram

RF in

ADC

AGC

Secondary

Tuner control

Impulse

Suppression

IF to

Baseband

conversion &

Interpolator

FFT

Symbol,

Carrier &

Timing

Recovery

Pilot &

Channel

Processor

Control

engine

Symbol & Bit

De-interleaver

& Demapper

FEC

MPEG

TS

2-wire bus

Primary

2-wire bus