TDA1170N Low-Noise TV Vertical Deflection System DIP-12 (TDA1170N IC)
The TDA1170N is a monolithic integrated circuit designed for use as a vertical deflection system in black and white and color television receivers. Housed in a 12-lead quad in-line (DIP) plastic package, it features a low-noise architecture that makes it particularly well-suited for high-definition monitors. The chip integrates several critical functions, including a synchronization circuit, oscillator, ramp generator, high-power amplifier, and flyback generator.
In India, this IC is a standard replacement part for CRT-based monitors and televisions. Its "N" variant is optimized for reduced noise and stable frequency performance across a wide supply voltage range, ensuring reliable vertical scanning in professional and consumer display equipment.
Key Features
- Complete Deflection System: Integrates synchronization, oscillator, ramp generator, and power amplifier on a single chip.
- Low Noise Performance: Specially designed for high-resolution monitors where signal integrity is paramount.
- Integrated Flyback Generator: Simplifies external circuitry by handling high-voltage flyback pulses internally.
- Voltage Regulation: Features an on-chip voltage regulator to maintain stable operation during supply fluctuations.
- High Output Current: Capable of delivering up to 1.5A (peak) to the vertical yoke for precise deflection.
- Wide Supply Range: Operates reliably with supply voltages ranging from 10V to 35V.
- High Thermal Stability: Designed with metal tabs for efficient heat dissipation to the PCB.
Specifications
- IC Type: Vertical Deflection Processor
- Supply Voltage (VS): 10V to 35V
- Peak Output Current: 1.5A (at f = 50Hz)
- Flyback Peak Voltage: 60V (Maximum)
- Frequency Drift: 0.005 Hz/V (with supply voltage)
- Power Dissipation: 5W (at T_tab = 90°C)
- Operating Frequency: Typically 50Hz to 60Hz
- Package Type: PDIP-12 (Quad in-line)
- Operating Temperature: -40°C to +150°C (Junction)
Pinout Configuration (12-Pin DIP)
- Pin 1: Sync Input
- Pin 2: Supply Voltage (VCC)
- Pin 3: Flyback Generator
- Pin 4: Ground (GND)
- Pin 5: Ground (GND)
- Pin 6: Power Amplifier Output
- Pin 7: Power Amplifier Supply
- Pin 8: Regulated Voltage Output
- Pin 9: Height Adjustment
- Pin 10: Oscillator
- Pin 11: Ground (GND)
- Pin 12: Ramp Generator / Amplifier Input
