BCM3419 Broadcom Corporation, BCM3419 Datasheet

BCM3419

Manufacturer Part Number

BCM3419

Description

ADVANCED LOW IF DIRECT CONVERSION CABLE TUNER

Manufacturer

Broadcom Corporation

Datasheet

1.BCM3419.pdf (1 pages)

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Single-chip direct conversion silicon tuner completes system

design with Broadcom cable modem

DOCSIS

Supports 64, 256, and 1024 QAM

Input frequency range of 50 MHz through 860 MHz

IF (intermediate frequency) output range of 4 MHz, 4.5 MHz,

and 5 MHz

For use in 6-MHz, 7-MHz, and 8-MHz systems

High linearity across entire frequency range

Differential signals for high noise immunity

Integrated and cost-effective BOM:

• True single-chip tuner

• Single 3.3V supply voltage

• Fully integrated oscillator

• Fully integrated channel selectivity

Symmetrical IF output for direct connection to channel decoder

RSSI (Received Strength Signal Indicator) information

provided through I

Standby mode

40-pin MLF package

ADVANCED LOW IF DIRECT CONVERSION CABLE TUNER

/EuroDOCSIS™ 1.0/1.1/2.0

F E A T U R E S

C bus

Tuner Application Example (Cable Modem)

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BCM3419

Cable Modems

Cable Gateways

Voice Cable Modems

Extreme integration level leads to highly cost-effective BOM

Eliminates significant external components:

• SAW (Surface Acoustic Wave) IF filters

• RSSI measurement components

• IF amplifiers

• Oscillator components

Package optimization enables low-cost 2-layer system PCB

Minimal in-house RF expertise required

Support for DOCSIS/EuroDOCSIS 2.0 enables one device

solution to be used worldwide

Superior alternative to can tuners

• High quality and reliability (no hand tweaking)

• Enables lower profile and smaller designs

• Proven reference design for quick time-to-market

• Simplified manufacturing flow

Single supply voltage provides low-cost operation

Low-power consumption

S U M M A R Y O F B E N E F I T S

A P P L I C A T I O N S

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