MT2122 MicroTune, MT2122 Datasheet

MT2122

Manufacturer Part Number

MT2122

Description

RF Silicon AND Subsystems Solutions FOR Broadband Communications AND Automotive Electronics

Manufacturer

MicroTune

Datasheet

1.MT2122.pdf (2 pages)

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MT2122 SINGLE-CHIP

BROADBAND TUNER

PRODUCT BRIEF

The MT2122 is a fully integrated broadband

tuner for analog and digital OpenCable

set-top boxes, home gateways, cable

modems and HDTV applications.

MT2122 Single-Chip Broadband Tuner

fully integrated single-chip tuner,

with functional blocks specifically

designed to ease implementation of

high-performance analog and digital

OpenCable™ set-top boxes. It

supports advanced analog/digital

set-top boxes (STB) including

OpenCable™, home gateways,

cable modems and HDTV

applications.

developed to give manufacturers

design flexibility at low cost without

compromising high performance.

from 48 – 1100 MHz. It features

integrated filter components and

controls that allow for a simple,

alignment-free pre-select filter. This

provides excellent end-to-end

linearity performance in severely

sloped input conditions. MT2122

greatly reduces complexity for the

Multimedia over Coax Alliance

(MoCA™) applications.

ensures consistent OpenCable -

compliant performance with no

manual alignment. The on-chip

buffer amplifier for Forward Data

Channel (FDC) reduces bill of

materials (BOM) cost while

improving performance compared to

solutions using a directional coupler.

diode attenuator linearizer circuit that

can drive a PI-network pin diode

attenuator in the signal path. The

MT2122 also supports multi-tuner

front-end implementations and is

programmable through a serial bus

interface.

RF SILICON AND SUBSYSTEMS SOLUTIONS

FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS

The MicroTuner™ MT2122 is a

The MT2122 has been

The MT2122 receives signal

Its dual-conversion architecture

The MT2122 includes a PIN

APPLICATIONS

•

FEATURES

•

Advanced analog and digital

set-top boxes (STB) including

OpenCable.

Home gateways

Cable modems

HDTV

Output fully compatible with

demodulators for MoCA,

NTSC, PAL, SECAM, DAVIC,

DVB-C, DOCSIS®, Euro-

DOCSIS™, OpenCable and

other standards

On-chip amplifier for Forward

Data Channel (FDC)

Ease of multi-tuner front-end

implementations

Dual-conversion architecture

for consistent OpenCable

compliant performance

Serial control interface

One general purpose output

controllable via serial control

interface

On-chip frequency synthesis

system integrating PLL, VCOs

and varactors.

1.1 GHz bandwidth

No need for the 28 V to 33 V

supplies typically required by

traditional cable tuners

Automatic frequency control

(AFC) voltage detector for

frequency fine-tuning

Integrated temperature

sensor for thermally sensitive

systems

3.3 V and 5 V serial bus

compatible

No tunable parts required

Simple interface to external

filters

Software shutdown mode

Small 8 mm x 8 mm 56-pin

QFN package

Related parts for MT2122

MT2122 Summary of contents

Page 1

... MT2122 SINGLE-CHIP BROADBAND TUNER PRODUCT BRIEF The MT2122 is a fully integrated broadband tuner for analog and digital OpenCable set-top boxes, home gateways, cable modems and HDTV applications. MT2122 Single-Chip Broadband Tuner RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS The MicroTuner™ ...

Page 2

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