TW9912-NA3-CR

Overview

The TW9912-NA3-CR is a low-power video decoder IC supporting NTSC, PAL, and SECAM standards with analog component input. It digitizes base-band CVBS or S-video into 8-bit 4:2:2 YCbCr format and handles analog component video as 8-bit YCbCr. The device outputs standard BT.656 interlaced video and supports progressive output via internal de-interlacing. It operates on 1.8V for analog/digital supplies and 3.3V for I/O, requiring only a single 27MHz crystal. Key features include an adaptive 4H comb filter for Y/C separation and VBI signal processing.

Feature Summary

• Supports NTSC, PAL, and SECAM decoding with automatic format detection
• Includes internal de-interlacing engine for progressive output conversion
• Features adaptive 4H comb filter to reduce cross color and luminance artifacts
• Processes vertical blanking interval signals including closed caption and WSS

Applications

• High-definition digital television systems
• LCD and plasma display panels
• Digital Light Processing (DLP) projectors
• Notebook and desktop personal computers

Procurement Notes

Verify the specific suffix 'CR' against the manufacturer's official documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the required 1.8V and 3.3V power domains during system design. Confirm that the 48-QFN package dimensions align with the PCB footprint requirements. Cross-reference the RoHS status and humidity sensitivity ratings with current production data sheets.

Selection Notes

Select this component when simultaneous support for composite, S-video, and analog component inputs is required within a single channel. The integrated de-interlacing capability makes it suitable for applications needing progressive scan outputs from interlaced sources. Consider the 27MHz crystal requirement for clock generation and the serial interface complexity for host integration. Evaluate power consumption constraints given the 1.8V core supply voltage.

Part Context

This part belongs to the Renesas TW9912 series of video decoders, manufactured by Renesas Electronics Corporation (formerly Intersil). The series focuses on multi-standard analog-to-digital video conversion. The TW9912 specifically targets applications requiring high-quality Y/C separation and flexible output formats. It represents a solution for integrating multiple analog video sources into digital processing chains.

Replacement Considerations

Check for direct pin-compatible substitutes within the same family if availability is constrained. Verify that alternative parts maintain support for all required video standards and the specific BT.656 output format. Ensure replacement components offer comparable de-interlacing performance and VBI processing capabilities.