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
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
•
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
•
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
•
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
2
C bus
•
Standby mode
•
Low-power consumption
•
APPLICATIONS
•
Cable Modems
•
Cable Gateways
•
Voice Cable Modems
•
40-pin MLF package
Tuner Application Example (Cable Modem)
BOARDCOM [ Broadcom Corporation. ]
