LM1881 - LM1881 Video Sync Separator April 2001 LM1881...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
LM1881 Video Sync Separator General Description The LM1881 Video sync separator extracts timing informa- tion including composite and vertical sync, burst/back porch timing, and odd/even field information from standard nega- tive going sync NTSC, PAL * and SECAM video signals with amplitude from 0.5V to 2V p-p. The integrated circuit is also capable of providing sync separation for non-standard, faster horizontal rate video signals. The vertical output is produced on the rising edge of the first serration in the vertical sync period. A default vertical output is produced after a time delay if the rising edge mentioned above does not occur within the externally set delay period, such as might be the case for a non-standard video signal. Features n AC coupled composite input signal n >10 k input resistance n <10 mA power supply drain current n Composite sync and vertical outputs n Odd/even field output n Burst gate/back porch output n Horizontal scan rates to 150 kHz n Edge triggered vertical output n Default triggered vertical output for non-standard video signal (video games-home computers) Connection Diagram * PAL in this datasheet refers to European broadcast TV standard “Phase Alternating Line”, and not to Programmable Array Logic. LM1881N DS009150-1 Order Number LM1881M or LM1881N See NS Package Number M08A or N08E April 2001 LM1881 Video Sync Separator © 2001 National Semiconductor Corporation DS009150 www.national.com
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 13.2V Input Voltage 3 V P-P (V CC = 5V) 6V P-P (V CC 8V) Output Sink Currents; Pins, 1, 3, 5 5 mA Output Sink Current; Pin 7 2 mA Package Dissipation (Note 2) 1100 mW Operating Temperature Range 0˚C–70˚C Storage Temperature Range -65˚C to +150˚C ESD Susceptibility (Note 3) 2 kV Soldering Information Dual-In-Line Package (10 sec.) 260˚C Small Outline Package Vapor Phase (60 sec.) 215˚C Infrared (15 sec.) 220˚C See AN-450 “Surface Mounting Methods and their Effect on Product Reliability” for other methods of soldering surface mount devices. Electrical Characteristics V CC = 5V; R SET = 680 k ;T A = 25˚C; Unless otherwise specified Parameter Conditions Typ Tested Limit (Note 4) Design Limit (Note 5) Units (Limits) Supply Current Outputs at Logic 1 V CC =5V V CC = 12V 5.2 5.5 10 12 mAmax mAmax DC Input Voltage Pin 2 1.5 1.3 1.8 Vmin Vmax Input Threshold Voltage (Note 6) 70 55 85 mVmin mVmax Input Discharge Current Pin 2; V IN =2V 11 6 16 μAmin μAmax Input Clamp Charge Current Pin 2; V IN = 1V 0.8 0.2 mAmin R SET Pin Reference Voltage Pin 6; (Note 7) 1.22 1.10 1.35 Vmin Vmax Outputs I OUT =40μA ; Logic 1 V CC =5V V CC = 12V 4.5 4.0 11.0 Vmin Vmin I OUT = 1.6 mA Logic 1 V CC =5V V CC = 12V 3.6 2.4 10.0 Vmin Vmin Outputs I OUT
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/08/2011 for the course EE 459L taught by Professor Weber during the Spring '11 term at USC.

Page1 / 11

LM1881 - LM1881 Video Sync Separator April 2001 LM1881...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online