NXP公司的TDA18218HN是DVB-T電視用的硅調(diào)諧器IC,集成了全部的調(diào)諧功能,包括選擇性和提供低IF輸出信號(hào).TDA18218HN采用綜合的IF濾波器,支持6MHz,7MHz以及8MHz的信道帶寬,單電源3.3V工作,I2C總線(xiàn)接口.外接元件僅為16MHz的晶振,用作時(shí)鐘發(fā)生器,主要用在DVB-T機(jī)頂盒(STB)和TV接收器.本文介紹了TDA18218HN的主要特性,方框圖以及典型應(yīng)用框圖.TheTDA18218HNisaSiliconTunerICdesignedfordigitalterrestrial(DVB-T)TVreception.TheTDA18218
NXP 公司的
TDA18218HN是 DVB-T電視用的硅調(diào)諧器
IC,集成了全部的調(diào)諧功能,包括選擇性和提供低IF輸出信號(hào). TDA18218HN采用綜合的IF
濾波器,支持6MHz,7MHz以及8MHz的信道帶寬,單
電源3.3V工作,I2C總線(xiàn)接口.外接元件僅為
16MHz的晶振,用作時(shí)鐘發(fā)生器,主要用在DVB-T機(jī)頂盒(
STB)和TV
接收器.本文介紹了TDA18218HN的主要特性,方框圖以及典型應(yīng)用框圖.
The TDA18218HN is a Silic
onTuner IC designed for digital terrestrial (DVB-T) TV reception. The TDA18218HN integrates the overall tuning function, including selectivity and provides a low-IF output signal.
The TDA18218HN uses integrated IF filters to support 6 MHz, 7 MHz or 8 MHz channel bandwidths. The TDA18218HN requires only one single 16 MHz crystal for clock generation. A clock signal is available on crystal oscillator output pins (XTO_P / XTO_N) to synchronize the channel decoder.
The TDA18218HN is a low cost Silicon Tuner targeting digital terrestrial applications. The TDA18218HN matches the pe
rformance of the conventional can tuners. Additionally, the following benefits can be stated:
• Easy on-board integration
• Drastically reduces:
– the size of the tuner function
– the power consumption
TDA18218HN主要特性:
Fully integrated IF selectivity; eliminating the need for external SAW filters
Fully integrated oscillators with no external components
Integrated wideband gain control
Alignment free
RF loop-through for easy implementation in the Set-
TopBox (STB)
Integrated die thermal sensor
Single 3.3 V power supply
Low power consumption (750 mW)
Crystal oscillator output buffer (16 MHz) for single crystal applications
I2C-
businterface compatible with 3.3 V and 5 V microcontrollers
