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BCM3419 Datasheet

  • BCM3419

  • ADVANCED LOW IF DIRECT CONVERSION CABLE TUNER

  • 2頁(yè)

  • ETC

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BCM3419
ADVANCED LOW IF DIRECT CONVERSION CABLE TUNER
FEATURES
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Single-chip direct conversion silicon tuner completes system
design with Broadcom cable modem
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DOCSIS
/EuroDOCSIS鈩?1.0/1.1/2.0
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Supports 64, 256, and 1024 QAM
SUMMARY OF BENEFITS
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Extreme integration level leads to highly cost-effective BOM
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Eliminates significant external components:
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SAW (Surface Acoustic Wave) IF filters
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RSSI measurement components
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IF amplifiers
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Oscillator components
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Package optimization enables low-cost 2-layer system PCB
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Minimal in-house RF expertise required
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Input frequency range of 50 MHz through 860 MHz
IF (intermediate frequency) output range of 4 MHz, 4.5 MHz,
and 5 MHz
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For use in 6-MHz, 7-MHz, and 8-MHz systems
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High linearity across entire frequency range
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Support for DOCSIS/EuroDOCSIS 2.0 enables one device
solution to be used worldwide
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Superior alternative to can tuners
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High quality and reliability (no hand tweaking)
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Enables lower profile and smaller designs
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Proven reference design for quick time-to-market
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Simplified manufacturing flow
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Single supply voltage provides low-cost operation
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Differential signals for high noise immunity
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Integrated and cost-effective BOM:
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True single-chip tuner
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Single 3.3V supply voltage
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Fully integrated oscillator
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Fully integrated channel selectivity
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Symmetrical IF output for direct connection to channel decoder
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RSSI (Received Strength Signal Indicator) information
provided through I
2
C bus
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Standby mode
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Low-power consumption
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APPLICATIONS
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Cable Modems
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Cable Gateways
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Voice Cable Modems
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40-pin MLF package
Tuner Application Example (Cable Modem)

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