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BCM3419 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – ADVANCED LOW IF DIRECT CONVERSION CABLE TUNER | |||
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BCM3419
®
ADVANCED LOW IF DIRECT CONVERSION CABLE TUNER
FEATURES
⢠Single-chip direct conversion silicon tuner completes system
design with Broadcom cable modem
⢠DOCSIS®/EuroDOCSIS⢠1.0/1.1/2.0
⢠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 I2C bus
⢠Standby mode
⢠40-pin MLF package
SUMMARY OF BENEFITS
⢠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
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APPLICATIONS
⢠Cable Modems
⢠Cable Gateways
⢠Voice Cable Modems
Tuner Application Example (Cable Modem)
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