This datasheet provides a detailed overview of the LM1881 video sync separator, including circuit principle, functional characteristics, and typical application circuits.
The LM1881 is a video sync separator that extracts composite and vertical sync, burst/back‑porch timing, and odd/even field information from NTSC, PAL and SECAM video signals. It operates from a single 5 V‑12 V supply and accepts input video amplitudes from 0.5 V to 2 V p‑p.
The device provides composite sync, vertical sync, burst gate/back‑porch, and odd/even field outputs, and includes application notes on timing, resistor selection, and typical performance characteristics for various video standards.
| Supply Voltage Range | 5 V DC to 12 V DC |
|---|---|
| Power Supply Drain Current | <10 mA |
| Output Sink Current (pins 1,3,5) | 5 mA |
| Output Sink Current (pin 7) | 2 mA |
| Package Dissipation | 1100 mW |
| Storage Temperature Range | -65 °C to +150 °C |
| Typical Supply Current at 5 V | 5.2 mA |
The LM1881 operates from a single supply voltage between 5 V DC and 12 V DC.
The odd/even output identifies which video field (odd or even) is present at the input.