Renesas TW9906-TB2-GR

Overview

TW9906-TB2-GR from Intersil (now Renesas) is a 3×10-bit multi-standard video decoder IC supporting NTSC/PAL/SECAM with integrated YCbCr component input, adaptive 4H comb filter, and VBI slicer-designed for embedded multimedia systems requiring high-fidelity analog video digitization and scaling. It features three 10-bit ADCs, digital sub-carrier PLL, ITU-R BT.601/656 output, and operates from 2.5V/3.3V supplies.

For engineers reviewing the TW9906-TB2-GR datasheet, TW9906-TB2-GR pinout, TW9906-TB2-GR application, or TW9906-TB2-GR equivalent, key selection considerations include its 80-pin TQFP package, VMI 1.4–compatible 10/20-bit pixel interface, automatic format detection across 10+ PAL variants, and support for Macrovision copy protection detection in consumer AV equipment design.

Technical Context

The TW9906-TB2-GR integrates a mixed-signal 2.5V/3.3V CMOS architecture with three independent 10-bit ADC channels, each with clamping, anti-aliasing filtering, and programmable AGC. Its adaptive 4H comb filter and PAL delay line enable precise luma/chroma separation under weak-signal or VCR trick-mode conditions.

Digital timing subsystems include a sub-carrier PLL for accurate color decoding, horizontal PLL with advanced sync processing for non-standard signals, and field-locked audio clock generation. Output formatting supports both free-running and line-locked clocks, arbitrary horizontal down-scaling, and VBI data pass-through via built-in FIFO and slicer.

Key Specifications

Pinout & Package

Package: 80-pin TQFP (12mm × 12mm, 0.5mm pitch), RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video decoder applications.

Compared with ADV7180BCPZ and TVP5150AM1IPBT, the TW9906-TB2-GR uniquely combines YCbCr component support, adaptive 4H comb filtering, and full VBI packet handling-making it the only option among the three capable of simultaneously serving high-fidelity broadcast decoding and data-service–enabled multimedia platforms.

Availability

TW9906-TB2-GR is available at Aetrix Electronics and suitable for set-top box development, automotive rear-view display integration, medical imaging equipment, and DVR/NVR analog input modules requiring stable component supply and long-term lifecycle support.

Supply support for TW9906-TB2-GR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Intersil Corporation (acquired by Renesas Electronics in 2017) is a U.S.-based analog and mixed-signal semiconductor company focused on power management, precision analog, and video interface solutions.

The TW9906-TB2-GR belongs to Intersil's Techwell video decoder product line, engineered specifically for high-fidelity digitization of legacy analog video sources in resource-constrained embedded systems with stringent image quality and data-service requirements.

FAQ

What video standards does the TW9906-TB2-GR support with automatic detection?

The TW9906-TB2-GR supports NTSC (M, 4.43), PAL (B, D, G, H, I, M, N, N-combo), PAL-60, and SECAM-all with fully automatic format detection. It uses digital PLLs and adaptive sync processing to lock reliably even under weak-signal or VCR trick-mode conditions. No firmware intervention is needed for standard switching; detection occurs at power-up and during dynamic input changes.

Does the TW9906-TB2-GR support YCbCr component video input, and what resolutions are handled?

Yes, the TW9906-TB2-GR supports YCbCr component input for 480i/576i interlaced formats and sub-sampled 480p/576p progressive formats, with auto-detection. It accepts separate Y, Cb, Cr analog signals through dedicated input paths, bypassing comb filtering and enabling direct digitization with minimal latency and no cross-color artifacts.

What is the function of the built-in VBI slicer and FIFO in the TW9906-TB2-GR?

The TW9906-TB2-GR's VBI slicer extracts standardized data services-including closed caption, WSS, Teletext, and Intercast™-from active video blanking intervals. The integrated 256-byte FIFO buffers sliced packets for host CPU access via the 2-wire serial interface, enabling real-time parsing without interrupt overhead or external memory.

Can the TW9906-TB2-GR generate a field-locked audio clock, and how is it derived?

Yes, the TW9906-TB2-GR includes a dedicated field-locked audio clock generator that derives a synchronous audio sample clock directly from video field timing. It uses internal horizontal and vertical sync counters-not an external PLL-to produce stable 27MHz-derived clocks (e.g., 48kHz or 44.1kHz multiples), eliminating timing drift between video and audio domains in AV systems.

What power supply voltages does the TW9906-TB2-GR require, and what is its typical power consumption?

The TW9906-TB2-GR requires a 2.5V core supply and a 3.3V I/O supply, with all digital I/O pins rated 3.3V/5V tolerant. Its analog front-end operates from the same 2.5V/3.3V rails. Typical total power consumption is 0.25W at 27MHz clock and full analog input activity, verified per FN7770 Rev.0.00 characterization data.