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产品型号BCM3401的Datasheet PDF文件预览

BCM3416  
®
ADVANCED DIGITAL CABLE TUNER  
S U M M A R Y O F B E N E F I T S  
F E A T U R E S  
Supports 64 and 256 QAM  
Narrowband first IF eliminates processing of unnecessary  
channels  
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  
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  
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  
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  
FLASH  
NB  
SAW  
SAW  
BCM3348  
Single-Chip  
50-860 MHz  
Diplex  
Filter  
BCM3401  
BCM3416  
DOCSIS/EuroDOCSIS  
LNA  
CMOS Tuner  
2.0 Cable Modem  
50-860 MHz  
5-65 MHz  
O V E R V I E W  
TQFP-48  
IF AGC  
1270-2080 MHz  
PLL 1  
1176 MHz  
PLL 2  
10 MHz ref.  
Overview  
Technical Brief  
The BCM3416 is a highly integrated silicon tuner. The BCM3401,  
containing an LNA and the RF AGC, is the companion part to the  
BCM3416. This two-chip solution supports both 64-QAM and  
256-QAM digital cable modem applications.  
The signal is passed from the BCM3401 to the up conversion mixer. The  
up conversion mixer translates the input up to a fixed first IF of  
1220 MHz. The narrowband first IF eliminates processing of  
unnecessary channels.  
The BCM3416 and BCM3401 are specifically designed to work with  
Broadcom’s industry-leading BCM3345, BCM3360, BCM3348, and  
BCM3250 single-chip cable modems, and form an attractive alternative  
to traditional can tuners in any cable modem design.  
The down conversion mixer brings the signal down to the output IF of  
43.75 MHz (or 36.125 MHz for PAL). The IF amplifier buffers the  
differential output signal that can directly drive an external SAW filter,  
where the final channel selection filtering occurs.  
The BCM3416 supports an IF output frequency range of 36 MHz  
through 44 MHz and specifically supports the 36.125 MHz and  
43.75 MHz center frequencies for the PAL and NTSC standards. Also,  
the BCM3416 and BCM3401 chipsets are DOCSIS and EuroDOCSIS-  
based.  
The IF AGC amplifies the signal returned from the SAW filter over a  
30-dB range and buffers the differential output signal. The signal is then  
appropriately biased to the input of the BCM3345, BCM3360,  
BCM3348, and BCM3250.  
A two-wire MBus-compatible serial bus controls the chip.  
Great care was taken to develop the proven reference designs, which also  
minimize the external components required. This system’s expertise  
allows our customers to design with confidence even if they have  
minimal in-house RF expertise, while lowering their overall BOM cost  
versus the traditional can tuners.  
Broadcom®, the pulse logo, and Connecting everything® are trademarks of Broadcom Corporation and/  
or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the  
property of their respective owners.  
®
BROADCOM CORPORATION  
16215 Alton Parkway, P.O. Box 57013  
Irvine, California 92619-7013  
Phone: 949-450-8700  
Fax: 949-450-8710  
E-mail: info@broadcom.com  
Web: www.broadcom.com  
© 2003 by BROADCOM CORPORATION. All rights reserved.  
3416-PB04-R  
09/04/03  
配单直通车
BCM3416产品参数
型号:BCM3416
是否Rohs认证: 不符合
生命周期:Obsolete
零件包装代码:QFP
包装说明:QFP,
针数:48
Reach Compliance Code:compliant
HTS代码:8542.39.00.01
风险等级:5.92
JESD-30 代码:X-PQFP-G48
功能数量:1
端子数量:48
封装主体材料:PLASTIC/EPOXY
封装代码:QFP
封装形状:UNSPECIFIED
封装形式:FLATPACK
认证状态:Not Qualified
标称供电电压:3.3 V
表面贴装:YES
技术:CMOS
电信集成电路类型:TELECOM CIRCUIT
端子形式:GULL WING
端子位置:QUAD
Base Number Matches:1
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