Part Number: TDA9370
Function: Highly integrated “jungle IC” used in CRT television systems
Package: DIP 64 Pin Type
Manufacturer: Philips Electronics ( https://www.nxp.com/ )
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Description
The TDA9370 internal circuit mainly includes: microprocessor (CPU); image IF signal processing circuit; brightness, chrominance processing and demodulation circuit; RGB primary color signal matrix conversion circuit; black level extension, image sharpness enhancement circuit; RGB primary color selection Switch circuit; debug-free line oscillating circuit and line and field excitation pulse forming and output circuit: image state adjustment circuit.
Core Architecture Overview
- Embedded microcontroller (CPU core)
- Video IF processing + demodulation
- Full analog video signal chain (luminance + chrominance)
- RGB processing and output stage
- Horizontal and vertical deflection control
- On-screen display (OSD) control capability
Pinout
In the figure, the function code of each pin, the signal output/person flow direction (indicated by the arrow) are marked, and the function, voltage and resistance test data of each pin are further described in the form of a table, and the transistor type and application parameters of the TDA9370 peripheral circuit are given. Replacement model. This is a great help for overhauling the TDA9370 super chip color TV.
TDA9370 Datasheet and Circuit
Design Considerations
- Power Supply Filtering: Critical for noise-free video
- Grounding: Separate analog and digital grounds recommended
- High Voltage Isolation: Careful layout near deflection circuits
- Thermal: Moderate, but depends on surrounding circuitry
- EMI Control: Important due to high-frequency deflection signals
Applications
- CRT color televisions
- CRT monitors
- Integrated analog video display systems
Engineering Note
- This IC represents a classic “single-chip TV solution” from the analog CRT era
- Now largely obsolete due to transition to LCD/LED digital display systems
- However, still relevant for repair, restoration, and legacy equipment maintenance
Other data sheets are available within the file: TDA9370PS, TDA9370PS/N2
