1. The goal of the project is to create an amplifier board for weak analog video signals of the PAL standard with an amplitude of 0.3 V to a level of 1–1.5 V.
The board must provide stable signal amplification without significant distortion, maintain image quality, and be compatible with typical analog video devices that use the PAL standard.
2. Purpose and designation.
- **Goal**: To develop and manufacture an amplifier board to increase the amplitude of the analog PAL video signal from 0.3 V to 1–1.5 V.
- **Designation**: Use of the board in analog video surveillance systems or other video devices where it is necessary to compensate for signal amplitude loss due to long cable runs or other factors.
3. Technical requirements
3.1. Input parameters
- **Signal type**:
Analog video signal of the PAL standard.
- **Input signal amplitude**:
0.3 V (peak-to-peak).
- **Input impedance**:
75 Ohms (standard for coaxial video lines).
- **Input connector**:
RCA (optional, with adaptation capability).
3.2. Output parameters
- **Output signal amplitude**:
1.0–1.5 V (peak-to-peak, adjustable or fixed).
- **Output impedance**:
75 Ohms.
- **Output connector**:
RCA (compatible with the input connector).
- **Signal distortion**:
No more than 1% (THD, harmonic distortion).
- **Frequency range**:
0–6 MHz (to ensure the full spectrum of the PAL signal).
- **Signal-to-noise ratio (SNR)**:
Not less than 60 dB.
3.3. Electrical characteristics
- **Power supply**:
- Voltage: 5–12 V DC.
- Current consumption: No more than 100 mA.
- Protection against reverse polarity and voltage spikes.
- **Gain stability**: ±0.1 V within the operating temperature range.
- **Type of amplifier**: Operational amplifier or specialized video amplifier chip.
