To Next Page

To Previous Page

2008-03-14

LC-19LE430E/UK, LC-22LE430E/UK, LC-26LE430E/UK, LC-32LE430E/UK

MT5135AE is an integrated channel demodulator for European TV solutions. It provides high performance DVB-T and DVB-C demodulation function with

low overall costs. The integrated SAW filter technology eliminates the need for on-board SAW filters and VGAs, resulting in a lower BOM cost and a more

compact PCB design. The integrated CI+ controller and interface also reduce the complexity of TS routing.

The integrated DVB-T and DVB-C demodulators fully comply with the related ETSI and ITU standards. They meet performance requirements of NorDig

nified, C-Book, and D-Book. A high-performance analog front-end, consisting of a PGA and a 10-bit ADC preceding the digital data path, can accept the

IF or low-IF signal inputs directly from RF can tuners or silicon tuners. The digital data path realizes a set of refined algorithms to achieve quality

demodulation under varying channel conditions and impairments. An on-chip micro-processor controls the robust acquisition flow for both DVB-T and

DVB-C demodulators, and thus enables MT5135AE to successfully lock on the desired TV channel with a high carrier frequency offset (CFO) or timing

frequency offset (TFO). In addition proprietary mechanisms are incorporated to speed up the channel scan. They include the automatic mode detection

for DVB-T, and the automatic symbol rate and modulation type detection for DVB-C.

With MT5135AE, the cost and system complexity of a TV can be significantly reduced. Taking advantage of the integrated SAW filter technology, the

SAW filter together with the accompanying VGA, conventionally found on board or inside a NIM, can be spared. This solution calls for a simple RF tuner

directly feeding the IF inputs of MT5135AE, leaving a lean PCB design with a smaller component count and a lower BOM cost as well. Furthermore,

MT5135AE provides an integrated CI+ controller with the complete complementing interfaces among the CAM, the main decoder chip, and an additional

demodulator chip. When not in use, these interfaces can be set to hi-impedance mode to support multiple demodulators or multiple CAMs operation. With

the highly flexible CI+ controller and interfaces, MT5135AE effectively addresses the TS routing complexity for the application scenarios such as

simultaneous PVR recording and playback, or time-shift playback. The need for on-board TS multiplexers is eliminated and the PCB layout can be kept as

compact as possible.

GENERAL FEATURE LIST

Overall Features

 Integrated DVB-T and DVB-C demodulators

 Integrated CI/CI+ controller and interface

 On-chip integrated SAW filter function for lower BOM cost

 On-chip high-performance PGA and 10-bit ADC accepting IF or low-IF inputs

 RSSI measurement

 Independent RF and IF AGC controls

 On-chip micro-processor for acquisition control

 Good CAM compatibility

 One parallel or serial TS interface accepting outputs from other demodulator chips