ZL10353
Fully Compliant NorDig Unified COFDM
Digital Terrestrial TV (DTV) Demodulator
Data Sheet
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Compliant with ETSI 300 744 DVB-T, Unified
Nordig and DTG performance specifications
High performance with fast fully blind acquisition
and tracking capability
Low power consumption: less than 0.32 W, and
eco-friendly standby and sleep modes
Digital filtering of adjacent channels
Single 8 MHz SAW filter for 6, 7 & 8 MHz OFDM
Superior single frequency network performance
Fast AGC to track out signal fades
Good Doppler tracking capability
Enhanced frequency capture range to include
triple offsets
External 4 MHz clock or single low-cost
20.48 MHz crystal, tolerance up to +/-200 ppm
Automatic mode (2K/8K), guard and spectral
inversion detection
Very low driver software overhead due to on-chip
state-machine control
Novel RF level detect facility via a separate ADC
Pre and post Viterbi-decoder bit error rates, and
uncorrectable block count
ZL10353QCG
ZL10353QCG1
ZL10353QCF
ZL10353QCF1
June 2005
Ordering Information
64
64
64
64
Pin
Pin
Pin
Pin
LQFP
LQFP*
LQFP
LQFP*
Trays, Bake & Drypack
Trays, Bake & Drypack
Tape & Reel, Bake & Drypack
Tape & Reel,Bake & Drypack
*Pb Free Matte Tin
-10
°
C to +80
°
C
Applications
•
•
•
•
•
Digital terrestrial set-top boxes
Integrated digital televisions
Personal video recorders
PC-TV receivers
Portable applications
Description
The ZL10353 is a superior fourth generation fully
compliant ETSI ETS300 744 COFDM demodulator that
exceeds, with margin, the performance requirements
of all known DVB-T digital terrestrial television
standards, including Unified Nordig and DTG.
Figure 1 - Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2005, Zarlink Semiconductor Inc. All Rights Reserved.
ZL10353
Data Sheet
A high performance 10 bit on-chip ADC is used to sample the 44 or 36 MHz IF analogue signal. Advanced digital
filtering of the upper and lower channel enables a single 8 MHz channel SAW filter to be used for 6, 7 and 8 MHz
OFDM signal reception. All sampling and other internal clocks are derived from a single 20.48 MHz crystal or a 4
MHz clock input, the tolerance of which may be relaxed as much as 200 ppm.
The ZL10353 has a wide frequency capture range able to automatically compensate for the combined offset
introduced by the tuner xtal and broadcaster triple frequency offsets.
An on-chip state machine controls all acquisition and tracking operations of the ZL10353 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 and fast acquisition - very low software overhead.
Also included in the design is a 7-bit ADC to detect the RF signal strength and thereby efficiently control the tuner
RF AGC.
Users have access to all the relevant signal quality information, including input signal power level, signal-to-noise
ratio, pre-Viterbi BER, post-Viterbi BER, and the uncorrectable block counts. The error rate monitoring periods are
programmable over a wide range.
The device is packaged in a 10 x 10 mm 64-pin LQFP and is very low power.
2
Zarlink Semiconductor Inc.
Analog electronics
京公网安备 11010802033920号
EEWORLD
