BCM3416
®
ADVANCED DIGITAL CABLE TUNER
FEATURES
•
•
•
•
•
•
•
Supports 64 and 256 QAM
Input frequency range of 50 MHz through 860 MHz *
IF output range of 36 MHz through 44 MHz
High linearity across entire frequency range
Differential signals for high noise immunity
Eliminates need for image reject mixer
Highly integrated and cost-effective
•
Minimal BOM with reference designs available
•
IF AGC and frequency synthesizers included
•
Standard logic CMOS with single 3.3V supply
•
48-pin TQFP
SUMMARY OF BENEFITS
•
Narrowband first IF eliminates processing of unnecessary
channels
•
DOCSIS and EuroDOCSIS 1.0/1.1/2.0 compliant
•
Minimal in-house RF expertise required
•
Superior alternative to can tuners
•
High quality and reliability (no hand tweaking)
•
Enables lower profile and smaller designs
•
Simplified manufacturing flow
•
Lower BOM cost
•
Applications
•
Cable modems
•
Cable set-top boxes
* = For use only in applications where the input frequency to the
diplexer is less than 1000 MHz.
Tuner Application Example (Cable Modem)
SDRAM
NB
SAW
SAW
FLASH
Diplex
Filter
50-860 MHz
50-860 MHz
BCM3401
LNA
BCM3416
CMOS Tuner
BCM3348
Single-Chip
DOCSIS/EuroDOCSIS
2.0 Cable Modem
5-65 MHz
BOARDCOM [ Broadcom Corporation. ]
