MT2170 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 NE®
RF SILICON AND SUBSYSTEMS SOLUTIONS
FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
MT2170 SINGLE-CHIP
DOCSIS 3.0 WIDEBAND TUNER
PRODUCT BRIEF
The MT2170 is a low-power, single-chip
DOCSIS 3.0 wideband tuner with an
integrated IF variable gain amplifier.
MT2170 Single-Chip
DOCSIS 3.0 Wideband Tuner
The MicroTuner™ MT2170
is an advanced, low-power
single-chip wideband tuner
that has been optimized for
high-performance DOCSIS
3.0-compliant cable modems
and digital cable set-top boxes
that require low composite
distortion and low noise under
digital cable environments.
The MT2170 is capable of
receiving frequencies in the
48MHz to 1GHz range and of
converting a selected channel
to a standard intermediate
frequency (IF) between
26MHz and 126MHz.
The MT2170’s dual-
conversion architecture yields
the desirable characteristics of
DOCSIS 3.0 broadband
functionality. Together with
the Microtune differential 2^nd
IF Filter, the MT2170 provides
an optimized IF signal needed
for DOCSIS 3.0
demodulators.
The MT2170 provides
excellent in-band flatness as
well as very repeatable gain
characteristics across the
complete reception band.
The MT2170 has a field
proven, onboard, fully
autonomous AGC which
requires only one signal
connection between the tuner
and the demodulator. This
allows signals of poor quality
to be adequately conditioned
for further processing to
deliver extremely low bit error
rates.
APPLICATIONS
• DOCSIS 3.0 Wideband Cable
Modems
• Video over IP Digital Set-top
Boxes
• DOCSIS 3.0 VoIP Telephony
Modem
• PacketCable™ E-MTA’s
• Home Gateways
• Multimedia Applications
FEATURES
• 48MHz to 1GHz input
frequency range
• 5V & 3.3V power supply
• Works seamlessly with
DOCSIS 3.0 digital
demodulators
• 1.5W dual-conversion
architecture
• Single-ended RF input
reduces BOM by eliminating
input balun
• Minimal external components
• No manually tunable parts
required
• Integrated IF variable gain
amplifier for direct connection
to digital demodulators
• Fully compatible with
DOCSIS 3.0, EuroDOCSIS,
and other standards