LM1292
Description
The LM1292 is a very low jitter, integrated horizontal time base solution specifically designed to operate in high performance, continuous-sync video monitors. It automatically synchronizes to any H frequency from 22 kHz to 125 kHz and provides the drive pulse to the high power deflection circuit.
Key Features
- 22 kHz–125 kHz (1:5.7) with no ponent switching or external adjustments
- No manufacturing trims required
- internal VCO capacitor trimmed on chip
- Very low phase jitter (below 800 ps at 125 kHz)
- DC controlled H phase and duty cycle
- Video mute pulse for blanking during H frequency transitions
- Input sync prioritization
- Clamp pulse position and width control
- Continuous clamp pulse output, even with no sync input
- Resistor-programmable minimum and maximum VCO frequency
