TW9900-NA1-GRT

Overview

The TW9900-NA1-GRT is a low-power NTSC/PAL/SECAM video decoder designed for portable applications. It consumes less than 100mW in typical composite input scenarios and features a power-down mode for further reduction. The device operates on 1.8V for analog/digital supplies and 3.3V for I/O, requiring only a single 27MHz crystal. It decodes baseband analog CVBS or S-video signals into digital 8-bit 4:2:2 YCbCr output via BT.656 interface. Key internal blocks include an analog front-end with variable gain amplifier, adaptive 4H comb filter, multi-standard color decoder, and synchronization circuitry. The component is housed in a 32-lead QFN package (4.0 x 4.0 x 0.90 mm) with a 0.4 mm pitch, rated for -40 to +85°C operation.

Feature Summary

• Multi-standard decoding capability supporting NTSC M, NTSC 4.43, PAL BGHI, PAL M, PAL N, combination PAL N, and SECAM formats.
• High-quality adaptive 4H comb filter implementation for effective Y/C separation and reduction of cross-color and cross-luminance artifacts.
• Advanced synchronization processing circuitry capable of producing stable pictures from non-standard video signals.

Applications

• Portable video playback devices
• Mobile multimedia terminals
• Compact consumer electronics requiring low power consumption

Procurement Notes

Verify the specific suffix GRT indicates reel packaging when sourcing. Confirm the automotive qualification level if required by the design specification. Ensure the 27MHz crystal requirement is accounted for in the system clock design. Check RoHS compliance status against current regulatory requirements for the target market assembly.

Selection Notes

Select this component when a single-chip solution for multiple analog video standards is required in space-constrained designs. The integrated adaptive comb filter reduces external component count compared to simpler decoders. Verify that the 1.8V core voltage and 3.3V I/O voltage levels are compatible with the host processor logic interfaces before integration.

Part Context

The TW9900 belongs to Renesas' portfolio of video processing ICs aimed at portable markets. It serves as a bridge between legacy analog video sources and modern digital processing systems. The device simplifies design by integrating analog front-end, color decoding, and digital output generation into a single compact package, reducing board space and power budget.

Replacement Considerations

Check for pin-compatible alternatives within the same family if supply constraints exist. Verify that any substitute maintains support for all required video standards (NTSC, PAL, SECAM) and the BT.656 digital output format. Ensure thermal and power specifications remain within acceptable limits for the application.

FAQ

What is the maximum power consumption of the TW9900?

The device consumes less than 100mW in typical composite input applications. Power consumption can be further reduced using the available power-down mode.

Does the TW9900 require external components for clock generation?

Yes, a single 27MHz crystal is required to decode all supported analog video standards.

What type of digital output does the TW9900 provide?

It outputs digital 8-bit 4:2:2 YCbCr data via a BT.656 interface.