MT2121 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®
RF SILICON AND SUBSYSTEMS SOLUTIONS
FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
MT2121 SINGLE-CHIP
BROADBAND TUNER
PRODUCT BRIEF
The MT2121 has been optimized for
high-performance analog and digital
cable set-top boxes, supporting the
48 MHz to 1 GHz range of the cable
spectrum.
MT2121 Single-Chip Broadband Tuner
The MicroTuner™ MT2121 is a
fully integrated single-chip tuner,
with functional blocks specifically
designed to ease implementation of
an OpenCable™ - compliant set-top
box (STB). The MT2121 contains
integrated filter components and
controls that allow for a simple,
alignment-free pre-select filter. This
provides excellent end-to-end
linearity performance for severely
sloped input conditions. The tuner
also has an on-chip amplifier for
Forward Data Channel (FDC)
applications, reducing bill of
materials (BOM) and improving
performance-versus-solutions based
on a directional coupler.
APPLICATIONS
All cable-based applications
ƒ Advanced analog/digital set-top
boxes including OpenCable
ƒ Residential gateways
ƒ Home entertainment servers
FEATURES
• Dual-conversion architecture for
consistent performance with no
manual alignments
• Proven performance in dual-
function analog and digital
set-top box designs
• Eliminates the need for the 28V
to 33V supplies typically
required by traditional cable
tuners
• 3.3V and 5V serial bus
compatible
• Minimal external components;
simple interface to external
filters
• Software shutdown mode
• Small 8mm x 8mm 56-lead QFN
Quad Flat package available in
lead-free
• Can be used in conjunction with
Microtune’s upstream amplifiers
to create a complete RF front
end for bi-directional
set-top box applications