BCM3520

Features:

• Integrated VSB/QAM QAMLink® receiver
- 12-bit A/D converter with internal AGC amplifier
- Full equalizer architecture spans up to 35 to 49 s delays
- Direct IF sampled architecture reduces system cost
- Single IF signal path for QAM/VSB/NTSC to reduce system costs
-ITU-T J.83 Annex A/B/C FEC modes
- MPEG-2 transport output (serial/parallel)
- All-digital clock and carrier recovery
- Integrated PLLs to minimize external components
- All acquisition times typically less than 50 ms
• QPSK out-of-band receiver
- 100200 MHz receiver LO with input AGC and 6-bit A/D
- Variable symbol rate QPSK receiver
- Digital demodulator, Nyquist filters, tracking loops, and four-tap adaptive equalizer
- DVS-167 (Davic)/DVS-178 (DigiCipherII) FEC decoder
• NTSC/PAL IF Demodulator
- Adjacent channel rejection filters
- Programmable digital audio trap filter
- Programmable group delay compensation filter
- Analog Composite Video Baseband Signal (CVBS) output
- FM demod output supports internal BTSC stereo decoder,external BTSC stereo decoder (baseband or IF input), or
external Zweiton M decoder
• Integrated acquisition controller
• EIA/CEA-909 antenna interface
• 144-pin LQFP package




Description

The BCM3520 is a Plug-and-Play DTV receiver with superior performance and integration capabilities for the cost-effective delivery of digital television programming to consumers.

The chip of BCM3520 contains a digital receiver compatible with North American digital cable and digital terrestrial broadcast television standards. The receiver's unique system architecture can reliably receive, track and demodulate signals in the presence of interference and a wide range of varying multi-path channel conditions with the presence of noise.

The chip  of BCM3520 also contains an IF demodulator compatible with the NTSC video standard, and an on-chip audio decoder compatible with BTSC audio standard.