MT2011 Datasheet, PDF (1/2 Pages) Microtune,Inc – SINGLE-CHIP BROADBAND TUNER

RF SILICON AND SUBSYSTEMS SOLUTIONS
FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
MICROTUNER™ MT2011
SINGLE-CHIP BROADBAND
TUNER
PRODUCT BRIEF
The MicroTuner MT2011 is a fully
integrated single-chip tuner, optimized
for digital OpenCable compliant STB
applications.
MT2011 Single-Chip Broadband Tuner
The MicroTuner™ MT2011 is a fully
integrated single-chip tuner, with
functional blocks specifically designed
to ease implementation of high-
performance digital OpenCable™ set-
top boxes.
The MT2011 is a dual-conversion
tuner design which requires no
external tracking filters. This
eliminates the need for manual
alignments and simplifies its
deployment on the production line
where consistent high quality and
reliability are key factors. The device
maintains its controlled impedance
across the entire input spectrum and
exhibits good selectivity and sensitivity
and low in-band emissions. Its low
phase noise makes it an excellent
choice for digital set top box
applications.
The high level of circuit block
integration in the MT2011 reduces the
number of external components
required for a fully functional design,
thereby lowering the overall solution
cost. It includes a low noise amplifier
(LNA) in the front, a Forward Data
Channel (FDC) amplifier and an
intermediate frequency (IF) buffer
amplifier at the back-end. An on-chip
System Reference Oscillator (SRO)
output with selectable sub-multiples of
1, 2, or 4 can drive an additional tuner
or IC in a multi-tuner application. A
high first IF followed by an image-
reject mixer gives the MT2011
unparalleled performance over its
entire operating range from 48 MHz to
1 GHz.
All functions of the MT2011 are
controlled over a two-wire serial bus.
This includes the ability to readback
the status registers of the tuner as
well as the on-board die temperature
sensor.
APPLICATIONS
• Advanced digital set-top boxes
(STB)
• Home gateways
• Cable modems
• HDTV
FEATURES
• 1 GHz bandwidth
• Excellent linearity performance
in severely sloped input
conditions per SCTE 40
network requirements
• Ease of multi-tuner front-end
implementations
• Dual-conversion architecture for
consistent high performance
with no manual alignments
• Proven performance in dual-
function digital STB designs
• Elimination of the need for the
28V to 33V supplies typically
required by traditional tuners
• 3.3V and 5V serial bus
compatible
• Minimal external components
• Software shutdown mode
• Intermediate frequency (IF)
output fully compatible with
demodulators for DAVIC, DVB-
C, DOCSIS®, EuroDOCSIS™,
and other standards
• Small 8mm x 8mm 56-lead QFN
package
• Usable in conjunction with
Microtune’s upstream amplifiers
to create a complete RF front
end for bi-directional STB
applications