(China (Mainland))
Product Summary
The BCM4505KQLEG is an advanced modulation satellite receiver. The BCM4505KQLEG brings a new level of performance to the satellite television industry with the introduction of an integrated advanced modulation receiver and turbo FEC decoder. This breakthrough design provides 50% more throughput in the same satellite bandwidth at standard QPSK operating points while simultaneously improving BER performance beyond existing levels. A high performance turbo FEC code is implemented with all required on-chip RAM to move system operating points near the theoretical capacity limits. A Reed-Solomon outer code is also used to drive the BER beyond typical satellite 10E-11 limits. The BCM4500 is a single-chip digital satellite receiver supporting BPSK, QPSK, 8PSK and 16QAM modulations with iteratively (turbo) decoded error correction coding. It represents an industry milestone in terms of satellite system throughput and operating points. The BCM4505KQLEG also receives DVB, DIRECTV and DigicipherTM II (DCII), QPSK signals to support legacy system operation.
Parametrics
BCM4505KQLEG absolute maximum ratings: (1)analog operation: 3.3V.
Features
BCM4505KQLEG features: (1)256-kilobaud to 30-megabaud variable rate receiver; (2)Supports BPSK, QPSK, 8PSK, & 16QAM modulation; (3)Dual integrated 7-bit A/D converters; (4)Digital square-root Nyquist filters (α=0.2, 0.35); (5)All-digital clock and carrier recovery; (6)12-tap adaptive equalizer; (7)Complies with DVB/DIRECTV/Digicipher IITM FEC decoder; (8)MPEG-2 or DIRECTV output interface with output clock PLL; (9)On-chip microcontroller for acquisition and tracking; (10)On-chip BERT for BER testing; (11)Integrated DiSEqCTM (v2.0)transmitter and receiver; (12)128-pin PQFP; (13)3.3V I/O and analog operation; (14)1.8V digital operation.
Diagrams
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