National has recognized the ever-increasing need for higher video resolutions by offering a variety of high-performance video products to fit virtually every market and application. National's patented VIP10 process technology and current feedback topology enable the development of products with the widest bandwidths, lowest distortion, and lowest crosstalk specifications in the semiconductor industry. These added benefits will help alleviate your signal fidelity and video design challenges, giving you an extra advantage over your competition.
The LMH1981 is a high performance multi-format sync separator ideal for use in a wide range of video applications, such as broadcast and professional video equipment and HDTV/DTV systems.
The input accepts standard analog video signals with either bi-level or tri-level sync, and the outputs provide all of the critical timing signals in CMOS logic, including composite, horizontal, and vertical syncs, burst/back porch timing, odd/even field, and video format outputs. The horizontal sync output features very low jitter, minimizing external circuitry needed to clean and reduce jitter in subsequent sync processing stages.
The LMH1981 automatically detects the input video format, eliminating the need for programming using a microcontroller or external RSET resistor. The sync separator applies precise 50% sync slicing to ensure accurate sync extraction for inputs with irregular amplitude, offset, and noise conditions. Its unique video format feature (pin 9) outputs the total vertical scan lines per frame as an 11-bit binary serial bit stream, which can be decoded by the video system to determine the input video format and enable dynamic adjustment of system parameters, i.e.: color space or scaler conversions. The LMH1981 is available in a 14-pin TSSOP package and operates over the full commercial temperature range.
LMH1981 Features:
Standard analog video sync separation for NTSC, PAL, SECAM, 480i/p, 576i/p, 720p, 1080i/p, and RGsB from composite (CVBS), S-Video (Y/C), component (YPBPR), and computer video interfaces
Bi-level & tri-level sync compatible
Composite, horizontal, and vertical sync outputs
Burst/back porch timing, odd/even field, and video format Outputs
Superior jitter performance on the H Sync negative-going edge reference
Automatic video format detection
50% sync slicing of video inputs from 0.5 VPP to 2 VPP
Macrovision compatible
3.3V to 5V supply operation
LMH1981 Applications:
Broadcast and professional video equipment
HDTV/DTV systems
>Genlock systems
Video capture & digitization
Set-top boxes (STB) & digital video recorders (DVR)
Video displays
Also, check out National's Serial Digital Interface featured site for your broadcast video needs.
LMH1251 - YPBPR to RGBHV Converter and 2:1 Video Switch
High Speed Online Seminars & Video Applications
High Speed Amplifiers for Video Applications
Overview:
This Seminar is the first of two seminars that discusses National's solutions for video applications. Seminar will go over some basics of analog video amplifiers and ways to amplify, select, and amplify these types of signals. For the most part, the discussion will use analog video as an example, but it is equally applicable to other high speed operational amplifier applications as well.
HDTV Serial System Design
Overview: This seminar is an introduction to the HDTV signal processing environment and transmission system. The baseband serial HDTV system illustrates the tasks involved. National's products which support these systems are described together with design guidelines for the use of these products. The presentation begins with a brief introduction to the development of HDTV picture formats. It then proceeds to detail National's signal processing devices which perform parallel-to-serial data conversion and encoding, Serial Digital Video data transmission, signal recovery and equalization, signal routing and serial-to-parallel conversion and decoding. Devices and system issues are discussed with a focus on best-design practices to be observed when designing for such systems. Design checklists, design aids and application support resources are also covered.
National has recognized the ever-increasing need for higher video resolutions by offering a variety of high-performance video products to fit virtually every market and application. National's patented VIP10 process technology and current feedback topology enable the development of products with the widest bandwidths, lowest distortion, and lowest crosstalk specifications in the semiconductor industry. These added benefits will help alleviate your signal fidelity and video design challenges, giving you an extra advantage over your competition.
The LMH1981 automatically detects the input video format, eliminating the need for programming using a microcontroller or external RSET resistor. The sync separator applies precise 50% sync slicing to ensure accurate sync extraction for inputs with irregular amplitude, offset, and noise conditions. Its unique video format feature (pin 9) outputs the total vertical scan lines per frame as an 11-bit binary serial bit stream, which can be decoded by the video system to determine the input video format and enable dynamic adjustment of system parameters, i.e.: color space or scaler conversions. The LMH1981 is available in a 14-pin TSSOP package and operates over the full commercial temperature range.
