LA7800 Color TV Synchronization 12V 13mA IC DIP-16
The LA7800 is a monolithic integrated circuit designed for use in color television receivers to perform multiple synchronization and deflection functions. It integrates several essential circuits required for TV signal processing, including sync separation, horizontal automatic frequency control (AFC), horizontal oscillation, vertical oscillation, and vertical drive. By combining these functions into a single chip, the LA7800 simplifies TV circuit design and reduces the number of external components needed.
This IC was developed to improve the reliability and stability of television synchronization and scanning operations. It offers stable horizontal and vertical oscillation performance even under variations in temperature and supply voltage. The compact design in a DIP-16 package allows manufacturers to streamline television circuitry, improve performance consistency, and reduce the overall size of the deflection and synchronization control section.
Features:
- Multifunction IC for TV synchronization and deflection control.
- Built-in sync separator circuit.
- Horizontal automatic frequency control (AFC).
- Integrated horizontal oscillator.
- Integrated vertical oscillator.
- Vertical drive circuit included.
- X-ray protection function.
- Vertical blanking control.
- Stable oscillation against supply voltage variations.
- Stable operation with minimal warm-up drift.
- Reduced number of external components required.
- Compact integrated design for simplified TV circuits.
Specifications:
| Parameter | Value |
|---|---|
| IC Type | Color TV Synchronization & Deflection IC |
| Recommended Supply Voltage | 12V |
| Maximum Supply Voltage | 14V |
| Supply Current | 13 – 20mA |
| Maximum Power Dissipation | 450mW |
| Operating Temperature | -20°C to +85°C |
| Storage Temperature | -55°C to +125°C |
| Vertical Free Running Frequency | 50 – 60Hz |
| Vertical Frequency Pull-In Range | 9 – 11Hz |
Pinout:
| Pin No. | Function |
|---|---|
| 1 | Sync Input |
| 2 | Sync Separator Output |
| 3 | Horizontal AFC |
| 4 | Horizontal Oscillator |
| 5 | Horizontal Drive |
| 6 | Vertical Oscillator |
| 7 | Vertical Drive |
| 8 | Ground |
| 9 | Vertical Feedback |
| 10 | Vertical Output |
| 11 | Blanking Control |
| 12 | Supply Voltage (Vcc) |
| 13 | X-ray Protection |
| 14 | Oscillator Timing |
| 15 | Reference |
| 16 | Control / Internal Circuit |
Applications:
- Color television receivers.
- CRT TV vertical and horizontal deflection circuits.
- TV synchronization control systems.
- Analog television signal processing circuits.
- TV repair and replacement circuits.
Package Included:
- 1x LA7800 Color TV Synchronization 12V 13mA IC DIP-16.