Overview
Description
The TW9984 includes four high quality NTSC/PAL/SECAM video decoders that convert analog composite video signal to digital component YCbCr data. Each channel contains a 10-bit ADC with application selectable differential or single-ended analog video input options, proprietary clamp and gain controllers and utilizes 4H comb filter for separating luminance and chrominance to reduce cross noise artifacts. The TW9984 adopts the image enhancement techniques, such as IF compensation filter, CTI and programmable peaking. TW9984 also includes an NTSC/PAL video encoder with a 10-bit DAC to support CVBS output.
Features
- Accepts all NTSC (M/4.43)/PAL (B/D/G/H/I/K/L/M/N/60)/ SECAM standards with auto detection
- Integrated four video analog antialiasing filters and 10-bit CMOS ADCs with differential and single-ended inputs
- High performance adaptive 4H comb filters for all NTSC/PAL standards
- IF compensation filter for improvement of color demodulation
- Color Transient Improvement (CTI)
- Automatic white peak control
- Programmable hue, saturation, contrast, brightness and sharpness
- Proprietary fast video locking system for non-real-time application
- Supports the standard ITU-R BT.656 format or time multiplexed output with 54/108MHz
- Supports a two-wire serial host interface
- Integrated video encoder and 10-bit video CMOS DAC
- Integrated clock PLL for 108MHz clock output
- Short-to-battery, short-to-ground detection
- Ultra low power consumption (typical 550mW)
- Single 27MHz crystal for all standards and output options
- 1.2V/3.3V power supply
- Optional 1.8V operation of digital output
- 10mmx10mm 68 Ld WQFN package
- AEC-Q100 qualified
Comparison
Applications
Documentation
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| Type | Title | Date |
| Datasheet | PDF 2.24 MB | |
| Datasheet - Short-Form | PDF 230 KB | |
2 items
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
FAQs
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Does the TW9984 combine the 4 video input sources and output a unified image through the built-in analog encoder?
Question: Does the TW9984 combine the 4 video input sources and output a unified image through the built-in analog encoder? Answer: No, the TW9984 has 4 analog video decoders that output each channel as BT.656 data to an external device for further processing. The TW9984 is a “front ...
Jan 1, 1970 -
Does the TW9984 support differential CVBS inputs?
Question: Does the TW9984 support differential CVBS inputs, as there are 8 analog video input pins? Answer: Yes, TW9984 supports differential CVBS inputs as well as pseudo differential CVBS (when the negative wire is actually used as a ground) and traditional single-ended CVBS inputs.
Jan 1, 1970 -
How does the TW9984 send 4 asynchronous video signals over a single digital 8-bit BT.656 parallel interface?
Question: How does the TW9984 send 4 asynchronous video signals over a single digital 8-bit BT.656 parallel interface? Answer: The TW9984 has an internal PLL that can generate a 108 MHz output. This output takes the 4 asynchronous 27 MHz video channels and time division multiplexes them at ...
Jan 1, 1970