mt2081 Microtune,Inc, mt2081 Datasheet

mt2081

Manufacturer Part Number

mt2081

Description

World-standard Digital Cable Tuner

Manufacturer

Microtune,Inc

Datasheet

1.MT2081.pdf (2 pages)

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Related Product

Information:

 Press Release

 Related Products

 Order Information

 Product Selector

Guide

MT2081

World-Standard Digital Cable Tuner

The MicroTuner™ MT2081 is an advanced single-chip broadband tuner

with integrated RF loop-through.

Product Overview

The MicroTuner MT2081 is a single-chip digital cable tuner with integrated RF loop-through. The

MT2081 has been optimized for high-performance set-top boxes which require low composite

distortion and noise under challenging digital cable environments. Its high level of on-chip integration

enables the design of a set-top box (STB) at a very low cost.

The integrated circuit delivers best-in-class performance for all world-wide standards of digital cable

broadcast. The integrated low noise amplifier (LNA) with automatic gain control (AGC) delivers

excellent sensitivity. The ClearTune on-chip filtering provides optimal performance in tilted and heavily

loaded cable environments.

MT2081 Key Features and Performance

Applications

MT2081 Key Features



Digital cable STBs

Zapper boxes

DTAs

On chip filtering for standard and low IF output (1-60 MHz) providing simple interfacing to QAM

demodulators

Integrated RF loop-through amplifier

44 MHz to 1002 MHz frequency tuning range

Single-ended RF input – no external input balun required

Integrated RF ClearTune® filtering for optimal performance in tilted cable conditions

Option to allow loop-through amplifier to operate separately when tuner is in shut down or

standby mode

Compatible with ITU –T J.83 Annex A/B/C cable performance requirements (64/256 QAM)

Supports NorDig Unified and SARFT GD/J12-2007, RNG/DSG, SCTE40, DOCSIS and

EuroDOCSIS digital cable performance requirements

Excellent multi-tone performance

Outstanding large signal handling capabilities

Integrated power detectors for closed loop RF AGC – no input from demodulator required

System Reference Oscillator (SRO) output for clocking a demodulator or other components in

the system

General-purpose input/output (GPIO) controllable via serial-control interface

Operates with a low cost 25 MHz crystal

2.5 V (analog) and 1.2V (digital) power supply operation

Small 6 mm x 6 mm 40 pin Quad Flat No-Lead (QFN) package

Product Brief

Related parts for mt2081

mt2081 Summary of contents

Page 1

... The MicroTuner™ MT2081 is an advanced single-chip broadband tuner with integrated RF loop-through. Product Overview Related Product The MicroTuner MT2081 is a single-chip digital cable tuner with integrated RF loop-through. The Information: MT2081 has been optimized for high-performance set-top boxes which require low composite  Press Release distortion and noise under challenging digital cable environments ...

Page 2

... Parameter Condition Loop-thru disabled Loop-thru enabled = 75 Ω 1kΩ||5pF, Pin = -30 dBmV Over IF output frequency, calibrated  DS-00137– MT2081 Data Sheet  PB-00182 – MT2082 Product Brief  PB-00183 – MT2084 Product Brief Typ Max Unit 2.5 2.625 V 1.2 1.26 V 1002 ...

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