MT2131 Datasheet, PDF (1/2 Pages) Microtune,Inc – RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS

M I C R O T U N E®
MT2131 SINGLE-CHIP
TERRESTRIAL TUNER
PRODUCT BRIEF
The MT2131 is a high-performance
single-chip tuner for ATSC and
Digital Cable-Ready ATSC television
receivers and set-top boxes.
MT2131 Single-Chip Tuner
RF SILICON AND SUBSYSTEMS SOLUTIONS
FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
The MicroTuner™ MT2131 is an
advanced single-chip terrestrial
tuner, optimized for integrated
digital televisions and ATSC set-top
boxes.
The MT2131 receives
frequencies in the 48 MHz to
1 GHz range and converts a
selected channel to a standard
intermediate frequency (IF)
between 30 MHz and 57 MHz.
The MT2131’s dual-conversion
architecture yields consistent ATSC
A/74 and FCC Digital Cable-Ready
(DCR) compliant performance
without any manual adjustments.
This is achieved via the
combination of Microtune’s
ClearTune technology and an
autonomous automatic gain control
(AGC).
The integrated LNA delivers
excellent sensitivity. The
innovative gain control and power
detector circuits provide superb
terrestrial performance.
The MT2131 has an on-chip
amplifier for Forward Data Channel
(FDC) applications to reduce the
total Bill of Materials (BOM) cost for
a DCR television receiver. It
supports multiple standards
including ATSC, QAM, and NTSC.
In addition, the MT2131 provides
excellent in-band flatness, as well
as consistent gain characteristics
across the complete reception
band for use in digital/analog
televisions, terrestrial set-top boxes
and high-performance PC-TV
applications.
APPLICATIONS
• NTSC/ATSC front-ends
• ATSC-only front-ends and
set-top boxes
• Digital Cable-Ready (DCR)
ATSC integrated digital
televisions
• ATSC PVRs
• PC-TVs
• DVD recorders
FEATURES
• 48 MHz to 1 GHz input
frequency range
• Integrated front-end bandpass
filtering
• Integrated RF power
detectors and closed-loop
AGC
• Programmable RF AGC
• Single-ended RF input
• On-chip low-noise amplifier
provides excellent terrestrial
sensitivity
• Integrated IF variable gain
amplifier for direct connection
to digital demodulators
• Fully compatible with ATSC,
QAM, and NTSC performance
requirements.
• Integrated FDC low-pass filter
and buffer amplifier
• Capable of driving multiple
IF filters
• Compatible with 3.3 V and
5 V serial bus
• 48 pin, 7 mm X 7 mm QFN
package