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TDA4670 from PHI,Philips

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TDA4670

Manufacturer: PHI

Picture Signal Improvement PSI circuit

Partnumber Manufacturer Quantity Availability
TDA4670 PHI 445 In Stock

Description and Introduction

Picture Signal Improvement PSI circuit The TDA4670 is a video signal processor (VSP) manufactured by Philips (PHI).  

### **Specifications:**  
- **Function:** Video signal processing for TV and monitor applications.  
- **Inputs:** Accepts composite video (CVBS) and luminance/chrominance (Y/C) signals.  
- **Outputs:** Provides processed RGB signals for display.  
- **Features:** Includes luminance delay line, chrominance processing, and RGB matrixing.  
- **Package:** Typically available in a DIP (Dual In-line Package) or other standard IC packaging.  

### **Descriptions:**  
The TDA4670 is designed to enhance video signals by improving luminance and chrominance separation, reducing noise, and ensuring accurate color reproduction. It is commonly used in CRT-based television sets and monitors.  

### **Features:**  
- **Luminance Processing:** Includes a delay line for proper signal timing.  
- **Chrominance Processing:** Demodulates color signals with high accuracy.  
- **RGB Output:** Generates RGB signals for direct CRT drive.  
- **Noise Reduction:** Improves signal quality by minimizing interference.  
- **Sync Processing:** Handles synchronization signals for stable display output.  

This IC is part of Philips' legacy video processing lineup and is now considered obsolete in modern digital display systems.

Application Scenarios & Design Considerations

Picture Signal Improvement PSI circuit

Alternative Part Number

  • LM1881N --: Video sync separator with similar function to the TDA4670 sync processing block; widely available and pin-compatible in many video applications.
  • EL2210CN --: Video sync separator IC offering comparable sync extraction performance and a similar supply voltage range.
  • HA11580A --: Video sync separator/processor used in similar CRT video circuits; functional substitute when the original Philips part is unavailable.

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