Key facts
- Model
- LM1880
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-05
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National Semiconductor LM1880 Datasheet
The LM1880 is a no‑holds vertical/horizontal TV processing IC that eliminates traditional hold controls. It uses a precision VCO with a ceramic resonator and includes features such as an internal voltage regulator, adjustable APC loop parameters, and a chroma burst gate output.
The document contains a general description, absolute maximum ratings, electrical characteristics, typical application circuits, layout notes, and a full schematic. It also provides detailed component values and guidelines for modifying loop parameters and ensuring stable operation.
National Semiconductor LM1880 specifications
| Regulated Voltage (Pin 9) | 8.2‑9.2 V |
|---|---|
| VCO Reference Voltage (Pin 3) | 5 V |
| VCO Control Current (Pin 2) | 0.25‑1.0 µA |
| Horizontal Output Duty Cycle | 50 % |
| Horizontal Pull‑in Range | +600 Hz |
| Vertical Minimum Lock Frequency (Pin 12) | 55.0 Hz |
All National Semiconductor LM1880 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the regulated output voltage on pin 9?
The regulated voltage on pin 9 is specified as 8.2 V to 9.2 V.
What is the horizontal output duty cycle?
The horizontal output duty cycle is 50 %.
What is the absolute maximum input voltage for pins 10 and 14?
The absolute maximum input voltage for pins 10 and 14 is 5 Vp‑p.