LMH1981
- 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 (YPBPR/GBR) 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 Leading Edge of HSync
- Automatic Video Format Detection
- 50% Sync Slicing for Video Inputs from 0.5 VPP to 2 VPP
- 3.3V to 5V Supply Operation
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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 SD/ED/HD video signals with either bi-level or tri-level sync, and the outputs provide all of the critical timing signals in CMOS logic, which swing from rail-to-rail (VCC and GND) including Composite, Horizontal, and Vertical Syncs, Burst/Back Porch Timing, Odd/Even Field, and Video Format Outputs. HSync features very low jitter on its leading (falling) edge, minimizing external circuitry needed to clean and reduce jitter in subsequent clock generation stages.
The LMH1981 automatically detects the input video format, eliminating the need for programming using a microcontroller, and applies precise 50% sync slicing to ensure accurate sync extraction at OH, even for inputs with irregular amplitude from improper termination or transmission loss. Its unique Video Format Output conveys the total horizontal line count per field as an 11-bit binary serial data 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 a temperature range of −40°C to +85°C.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LMH1981 Multi-Format Video Sync Separator datasheet (Rev. H) | 2013/03/15 | |
| Selection guide | Broadcast and Professional Video Interface Solutions (Rev. E) | 2017/04/05 | ||
| Application note | Migrating From the LM1881 to the LMH1980 (Rev. A) | 2013/05/03 | ||
| EVM User's guide | AN-1599 LMH1981 Evaluation Board Instruction Manual (Rev. C) | 2013/04/26 | ||
| EVM User's guide | AN-1841 LMH1982 Evaluation Board User Guide (Rev. A) | 2013/04/26 | ||
| Application note | Demonst SMPTE-Compliant SDI Out Jittr Using LMH1982 & Virtx-5 GTP Xmittr (Rev. A) | 2013/04/26 | ||
| Application note | Triple Rate SDI IP FPGA Resource Utilization on SDXILEVK/AES-EXP-SDI-G Ref Dsgn (Rev. A) | 2013/04/26 | ||
| Application note | A 3 Gbps SDI Connectivity Solution Supporting Uncompressed 1080p60 Video | 2008/03/18 | ||
| Application note | Timing is Everything Çô The Broadcast Video Signal Path | 2007/08/02 | ||
| Design guide | Broadcast Video Owner's Manual | 2006/11/17 | ||
| White paper | Improving Video Clock Generation in Modern Broadcast Video Systems | 2006/07/01 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LMH1981MTEVAL — LMH1981 다중 형식 비디오 동기화 분리기용 평가 보드
The LMH1981 Evaluation Board can be used to evaluate the LMH1981 Multi-Format Sync Separator and as a reference for designing the PCB layout. Refer to the LMH1981 datasheet for more information on PCB layout considerations.
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
TIDA-00424 — 비디오 싱크 및 비디오 클록 생성 및 분배 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| TSSOP (PW) | 14 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.