參數(shù)資料
型號(hào)： RC2798
廠商： Fairchild Semiconductor Corporation
英文描述： Integrated QAM IF Downconverter
中文描述： 綜合調(diào)制中頻變頻器
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 76K
代理商： RC2798
PRELIMINARY INFORMATION
describes products that are not in full production at the time of printing. Specifications are based on design goals
and limited characterization. They may change without notice. Contact Fairchild Semiconductor for current information.
www.fairchildsemi.com
Features
RF input frequency range 30 to 250MHz
On chip VCO with LO frequency range 30 to 250MHz
IF amplifier with AGC setting
High dynamic range -9dBm IIP3
On chip Video Amplifier
Built in ESD protection
Supply voltage range 5 to 10 V
Space saving 20-Lead TSSOP package
Applications
Digital Set-top receivers
Cable modems
Internet surfboards
Network Interface Modules
Multimedia PCs
Description
The RC2798 is an integrated solution for the down-
conversion of QAM IF signals in the front-end design of
cable modem and set-top receivers. It is intended for use in
64QAM and 256QAM IF downconversion applications.
The RC2798 integrates IF amplifier with AGC , mixer, VCO,
and a video amplifier on a single chip. It accepts the QAM IF
signals via SAW filter and downconverts it to 5MHz
baseband signal.
The baseband signal can be digitized using Fairchild
Semiconductor’s 8 bit A/D (TMC1175 series) or 10bit A/D
(TMC1185 series) and decoded further with a QAM
demodulator. The IF, Oscillator and Mixer section work at
5V. The video amplifier works at 5V to 10V. The RC2798 is
available in a 20 Lead TSSOP package.
Block Diagram
1
AGC_IN1
2
AGC_IN2
3
VAGC
4
VCC MIX
5
OSC_OUT
6
GND
7
B2
8
C1
9
C2
10
20
19
18
17
16
15
14
13
12
11
B1
GND
MIX_OUT2
MIX_OUT1
G1A
G1B
VampIn1
VampIn2
VccAmp
VideoAmp
LO
AGC + MIX
RC2798
OUT1
OUT2
RC2798
Integrated QAM IF Downc onverter
Rev 1.0.0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RC2798G 功能描述:上下轉(zhuǎn)換器 TSSOP-20 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
RC2798GT 功能描述:上下轉(zhuǎn)換器 TSSOP-20 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
RC-280 制造商:BOSER 制造商全稱:BOSER 功能描述:Full-size Deskmount Chassis with 10-slot Backplane, 250W AT/ATX P/S
RC-2800 制造商:GC Electronics 功能描述:
RC2800-1-8/C 功能描述:環(huán)形MIL規(guī)格應(yīng)變消除裝置與適配器 RoHS:否 制造商:Amphenol Industrial 產(chǎn)品:Cable Clamps 類型:Bushing Cable Clamps MIL 類型:MIL-DTL-5015 系列:97 外殼大小:16S, 16 匹配樣式:Threaded 主體材料:Aluminum Alloy 主體類型:Straight
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