CX24118A-12Z,557

Video Processing Overview

The CX24118A-12Z,557 is a direct down-conversion satellite tuner designed for high-volume digital video, audio, and data receivers. It features an RF input range of 925–2175 MHz and supports symbol rates from 1 to 45 MSps. The device typically exhibits a noise figure of 10 dB and an input IP3 of 10 dBm at minimum gain. Packaged in a 36-pin QFN with a 6 mm x 6 mm footprint, it integrates a fractional synthesizer and auto-tuning system.

Video Processing Feature Summary

• Zero-IF architecture eliminates the need for image reject filtering
• Built-in auto-tuning system removes requirement for software calibration
• Variable baseband filters provide optimal interference rejection
• Very low phase noise integrated Local Oscillators support advanced modulation

Video Processing Applications

• 8PSK and DVB-S2 set-top boxes
• Commercial digital video receivers
• Digital audio receivers
• Personal video recorders (PVR)

Video Processing Procurement Notes

Verify that the component matches the specified 36-pin QFN package and lead-free RoHS compliance status. Confirm the ordering suffix corresponds to the specific tape-and-reel quantity or variant indicated by the manufacturer's official documentation. Ensure compatibility with the required 40 MHz third-overtone crystal oscillator circuit parameters.

Video Processing Selection Notes

Select this tuner for applications requiring advanced modulation support such as DVB-S2 and 8PSK. The integrated design reduces external BOM cost by eliminating the need for a balun. Consider the automatic tuning system for simplified initialization and channel change procedures without time-consuming calibration steps.

Video Processing Part Context

This component belongs to NXP Semiconductors' portfolio of advanced modulation digital satellite tuners. It serves as a highly integrated single-chip RF-to-baseband receiver solution. The device simplifies RF layout and saves board space compared to discrete implementations.

Video Processing Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.