LMH1981MT/NOPB National Semiconductor, LMH1981MT/NOPB Datasheet
LMH1981MT/NOPB
Specifications of LMH1981MT/NOPB
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LMH1981MT/NOPB Summary of contents
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... Top View FIGURE 1. Pinout Ordering Information Package Part Number LMH1981MT 14-Pin TSSOP LMH1981MTX © 2007 National Semiconductor Corporation Features ■ Standard analog video sync separation for NTSC, PAL, 480I/P, 576I/P, 720P, and 1080I/P/PsF from Composite Video (CVBS), S-Video (Y/C), and Component Video (YP P ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Human Body Model Machine Model Charge-Device Model Supply Voltage Video Input Electrical Characteristics Unless otherwise specified, all limits are guaranteed for kΩ ...
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Note 10: Tested with 720P signal. Note 11: Maximum voltage offset between 2 consecutive input horizontal sync tips must be less than 25 mV Note 12: Outputs are negative-polarity logic signal, except for odd/even field and video format outputs. LMH1981 ...
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SDTV Vertical Interval Timing (NTSC, PAL, 480I, 576I) www.national.com FIGURE 3. NTSC Odd Field Vertical Interval FIGURE 4. NTSC Even Field Vertical Interval 4 20174503 20174504 ...
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EDTV Vertical Interval Timing (480P, 576P) HDTV Vertical Interval Timing (720P, 1080P) FIGURE 5. 480P Vertical Interval FIGURE 6. 720P (1080P) Vertical Interval 5 20174505 20174514 www.national.com ...
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HDTV Vertical Interval Timing (1080I) www.national.com FIGURE 7. 1080I Field 1 Vertical Interval FIGURE 8. 1080I Field 2 Vertical Interval 6 20174506 20174507 ...
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SD/EDTV Horizontal Interval Timing FIGURE 9. SD/EDTV Horizontal Interval with Bi-level Sync SDTV Horizontal Interval Timing Characteristics (NTSC, PAL, 480I, 576I 3. 25° Symbol Parameter td Composite Sync Output Propagation Delay from Input ...
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HDTV Horizontal Interval Timing FIGURE 10. HDTV Horizontal Interval with Tri-level Sync HDTV Horizontal Interval Timing Characteristics (720P, 1080I 3. 25° Symbol Parameter td Composite Sync Output Propagation Delay from CSOUT Input Sync ...
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Application Information GENERAL DESCRIPTION The LMH1981 is designed to extract the timing information from various video formats with vertical serration and output the syncs and relevant timing signals in CMOS logic. Its high performance, advanced features and easy application make ...
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Input Settling Time and Coupling Capacitor Selection Following a significant input condition, the negative sync tip of the AC-coupled signal settles to the input clamp voltage as the coupling capacitor recovers a quiescent DC voltage IN via the ...
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FIGURE 13. Typical HSync Jitter for 1080I Input Upper: Horizontal Sync Leading Edge (Reference) Lower: Zoomed In — 400 ps/DIV, 25 mV/DIV FIGURE 14. Typical HSync Jitter for PAL Input Upper: Horizontal Sync Leading Edge (Reference) Lower: Zoomed In — ...
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TV Format (Total Lines per Field) NTSC/480I (262.5) PAL/576I (312.5) 480P (525) 576P (625) 720P (750) 1080I (562.5) 1080P (1125) Note: VFOUT Data has an average offset of −3 lines due to the HSync pulses uncounted during the VSync pulse ...
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FIGURE 16. Video Format Output for Interlaced Format, 1080I Field 1 FIGURE 17. Video Format Output for Interlaced Format, 1080I Field 2 13 20174511 20174512 www.national.com ...
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OPTIONAL CONSIDERATIONS Optional Input Filtering An external filter may be necessary if the video signal has considerable high-frequency noise or has large chroma am- plitude that extends near the sync tip. A simple RC low-pass filter with a series resistor ...
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Physical Dimensions inches (millimeters) unless otherwise noted 14-Pin TSSOP NS Package Number MTC14 15 www.national.com ...
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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...