BCM3520

®

ATSC/NTSC/QAM DIGITAL CABLE READY DTV RECEIVER

Plug and Play DTV System Solution

- 12-bit A/D converter with internal AGC amplifier

- Full equalizer architecture spans up to –35 to 49 µs 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

- 100–200-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

- 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

path channel conditions

filters

modes up to J=4 reduces system costs

FE A T URE S

SU MMA RY OF BEN E FI TS

MPEG Transport Serial/Parallel

Out-of-band Transport

EIA/CEA-909

Smart Antenna Interface

BCM3520

VSB/QAM

OOB/CableCard™

BCM3418

Tuner

BCM3431

LNA

Out-of-Band

Cable

ATSC

Composite Video

Audio: I2S, L/R, Multiplex Baseband, IF Audio