NXP:TDA20136 Datasheet

公司信息: 

预调谐器电路设计灵活,使机顶盒能够用于不同的安装环境,既可采用单缆输入,在内部将信号分开传输至设备的模式,也可采用两个分开输入的传统模式。这两种输入模式均可选用双环路输出功能。

单缆输入设置的最常用的情形是机顶盒与单缆接收室外单元(ODU)配合使用。在这种情况下,来自于多个高频头(LNB)的信号被复用到ODU的单根缆上。该单缆可为单个家庭或多住宅单元(MDU)的多个机顶盒提供所需的信号。采用该IC的机顶盒也可用于配备传统多LNB和多线ODU的安装模式,且无需更换硬件。在这种传统安装模式中,每个调谐器均从单独的电缆中接受信号。

TDA20136系统基于恩智浦久经考验、性能卓越的CX24132双调谐器技术。独一无二的第二代完整版双8PSK调谐器具有性能好、能耗低的特点。它包含普通应用所必需的低噪声放大器(LNA)、电压控制振荡器(VCO)、合成器、混频器和滤波器,此外,它小巧的尺寸(7mm x 7mm)可有助于系统设计师缩小前端尺寸。

TDA20136上市时间
恩智浦TDA20136将于2009年9月投产并在全球范围内发售,欲了解关于恩智浦射频硅调谐器的更多信息,请登陆: http://www.nxp.com/products/rf/tuners/silicon_tuners/index.html#preview

TDA20136关键特性
Dual RF-to-baseband satellite receiver
Integrated LNA with 4-way splitter and RF switch
Two pass-through outputs allow easy connection to another dual or single tuner
Low power consumption (1.7 W typical, with both channels active)
Very low phase noise, integrated Local Oscillators (LOs) for demanding 8PSK applications (0.36 degrees rms DSB)
Excellent noise figure (9 dB, typical)
Excellent linearity (9 dBm IIP3, typical)
60 dB (typical) isolation between channels
Single 3.3 V power supply
General purpose output (GPO) pins provide ability to drive external attenuators
Integrated RF power detectors allow estimation of composite input power levels for optimal gain distribution
Built-in auto tuning machine eliminates the need for software calibration
Buffered clock output
Improved spurious performance
Supports 8PSK and QPSK ModulationFormats
Supported Symbol Rates: 1-45 MSps
RF Input Frequency : 925 to 2175MHz

TDA20136Size
Pb (lead)-free 56-pin QFN package, 8x8mm

TDA20136应用领域
Dual/Multi Input DVB-S2 Set-top Boxes
DVR (Digital Video Recorder)
PiP (Picture in Picture

TDA20136方框图如下所示
TDA20136方框图

注意:TDA20136 datasheet文件待公布后上传