CX24130 CONEXANT [Conexant Systems, Inc], CX24130 Datasheet

CX24130

Manufacturer Part Number

CX24130

Description

Dual Stream QPSK/BPSK Demodulator lC

Manufacturer

CONEXANT [Conexant Systems, Inc]

Datasheet

1.CX24130.pdf (2 pages)

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Digital Set-top Box Solutions

Satellite

Dual Stream QPSK/BPSK Demodulator lC

CX24130

Satellite Tuner RF ICs, the CX24130 provides a complete dual broadband

satellite front-end solution capable of operating from 10 to 30 Msps.

component requirements by replacing two 100-pin demodulators with one

Solomon forward error correction (FEC). A variety of advanced features

enhance overall system performance, including automatic correction for

external quadrature gain/phase imbalances and DC offsets, and automatic

A robust carrier-tracking loop corrects for frequency offsets due to

during fade conditions. In addition, the CX24130 features integrated

signal-to-noise-ratio (SNR) and bit-error-rate (BER) monitors that facilitate

channel-performance measurements.The CX24130 demodulator is

designers to rapidly bring innovative new products to market.

High-Performance, Low-Power Broadband

Satellite Dual Independent Front-End Solution

Conexant’s CX24130 is the industry’s first single-chip dual-stream QPSK/

BPSK demodulator designed for satellite receiver systems. The device

is ideal for applications such as personal video recorders (PVRs) that

process dual incoming video streams to simultaneously play and record

two different television programs. Other applications include digital video

broadcasting/digital satellite system (DVB/DSS) set-top and PC receivers,

and residential gateways. In addition, when combined with the CX24108

With the CX24130, Conexant has significantly reduced product size and

80-pin IC. Key features include superior bit error rate (BER) performance,

low power dissipation, and small form factor. The device is compliant with

DVB (ETS 300-421) and DSS specifications for satellite transmission, and

provides digital derotation, digital filtering, equalization and Viterbi/Reed-

gain control (AGC) to compensate for input signal level variations.

inexpensive low noise block down-converters (LNBs), and a unique

automatic acquisition algorithm searches and acquires the carrier during

initial acquisition, and performs a smart search to reacquire the carrier

manufactured using proven 0.18-micron CMOS process technology.

Conexant provides a complete reference design package that allows

CX24130 Distinguishing Features

• Dual Stream QPSK/BPSK

• DVB/DSS compliant

• Symbol rates: 10 to 30 Msps

• Automatic acquisition

• Adaptive (FIR) equalizer

• Internal Viterbi and Reed-Solomon FEC

• Internal SNR and BER monitors

• DiSEqC™ Level 1.1 LNB control

Part Number CX24130

Description

demodulation paths

Dual Stream Demodulator IC

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