Key facts
- Model
- LM1270
- Industry
- Industrial
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- 2
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- Last added
- 2012-04-05
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National Semiconductor LM1270 Datasheet
The LM1270 is a supplementary IC designed to enhance video streams before the low‑cost chipset (LCCS) pre‑amplifier. It provides image‑enhancement by intermediate frequency boosting and includes video auto‑sizing, calibration, data reception, and window highlight features.
Key functions include programmable clamp and blank generators, I²C‑compatible video detection, programmable window and emphasis control, and support for two analog video inputs. The device is intended for monitors that use the LCCS chipset and offers a standard 0.7 V video output compatible with any video pre‑amp.
National Semiconductor LM1270 specifications
| Supply Voltage (Pins 9 and 18) | 6.0 V |
|---|---|
| Video Output Voltage Range | 4.75 V < VOG < 5.25 V |
| Video Input Voltage Range | 0.0 V < VIY < 1.0 V |
| Video Bandwidth | 200 MHz |
| Maximum Supply Current (Typical) | 235 mA |
All National Semiconductor LM1270 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the video bandwidth of the LM1270?
The LM1270 provides a video bandwidth of 200 MHz.
How many analog video inputs does the LM1270 support?
The LM1270 supports two analog video inputs per channel, for a total of four video inputs.
What is the purpose of the LM1270?
It is a supplementary IC that modifies the video stream before the LCCS pre‑amplifier to enhance pictures and motion video, providing auto‑sizing, window highlighting, and video source selection.
What is the maximum video bandwidth of the LM1270?
The device provides a video bandwidth of 200 MHz.