Part Number: TDA9381PS
Function: TV signal processor-Teletext decoder
Package: DIP 64 Pin
Manufacturer: Philips Electronics ( https://www.nxp.com/ )
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Description
The TDA9381PS is a highly integrated TV signal processor IC from the TDA93xx family (Philips/NXP), combining analog video processing, audio processing, and an embedded microcontroller into a single chip. It is specifically designed for CRT television receivers, particularly in cost-sensitive (economy) designs.
The various versions of theTDA935X/6X/8X PS/N2 series combine the functions of a TV signal processor together with aµ-Controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1or 10 page text. The ICs are intended to be used in economy television receivers with 90°and 110°picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in S-DIP envelope with 64 pins.
Key Architecture
- TV signal processor + embedded µ-controller
- Integrated video IF, chroma, and luminance processing
- On-chip audio processing
- Built-in Teletext and Closed Caption decoder
- Internal RAM for Teletext pages
Pinout
Design Insights (Important)
- Separate analog and digital supply decoupling is critical
- Crystal/clock stability affects video timing and MCU operation
- Proper grounding reduces noise in video output
- Teletext RAM size determines feature capability (1 vs 10 pages)
- Firmware inside MCU is mask-programmed → limited customization
Advantages
- Very high integration → minimal external components
- Cost-effective for mass production
- Built-in Teletext and caption features
- Simplified system design
Typical Applications
- CRT televisions (economy class)
- Analog TV receivers
- Low-cost display systems
Related / Comparable ICs
- TDA9351 / TDA9361 series
- LA76931 (Sanyo TV processor)
- TMPA8873 series (Toshiba TV processor)
- OM8370 / OM8380 series
Other data sheets are available within the file: TDA9381PS/NS
TDA9381PS Datasheet
TDA9381 Datasheet
