Dtm-2a4r-e Digital Tuner Development

In accordance with the China's State Administration of Radio Planning,2015 completion of the analog TV signals to digital TV signals conversion. When digital TV will replace analog TV, analog TV and gradually fade out the market. The development of digital television and gradually replace analog TV in the process, with digital TV and analog TV signal reception capability integration of digital-analog TV will be the only way of market development is the inevitable choice market transition.On the multi-mode digital tuner to use the main chip, NXP, and TI and other companies have introduced a more mature technology solution. Such as NXP's TDA6651, TI 's SN761668, SN761640 and other chips. These chips have been used in European and American markets high-volume digital TV tuner products.DTM-2A4R-E digital tuner for TV manufacturers to meet the needs of the mainstream and for the development of a multi-mode LED flat-panel digital TV tuner, compatible with our existing analog TV to receive signals, digital cable TV signal, and terrestrial digital TV signals. DTM-2A4R-E digital tuner is different from other analog and digital tuners; products in the circuit and structure have on innovation.This dissertation from the DTM-2A4R-E digital tuner summarize, ascertain circuit scheme, tuner are design processes, tuner Indicators of several components; focus on the DTM-2A4R-E digital tuner circuit selection process, analysis and resolve system problems of poor tuning characteristics of unified how to ensure the completion of key technical indicators...