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LMH1982SQSLASHNOPB.A中文资料

厂家型号

LMH1982SQSLASHNOPB.A

文件大小

696.79Kbytes

页面数量

48

功能描述

LMH1982 Multi-Rate Video Clock Generator With Genlock

数据手册

下载地址一下载地址二到原厂下载

简称

TI2德州仪器

生产厂商

Texas Instruments

中文名称

美国德州仪器公司官网

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LMH1982SQSLASHNOPB.A数据手册规格书PDF详情

1 Features

1• Two Simultaneous LVDS Output Clocks with

Selectable Frequencies and Hi-Z Capability:

– SD Clock: 27 MHz or 67.5 MHz

– HD Clock: 74.25 MHz, 74.25/1.001 MHz,

148.5 MHz or 148.5/1.001 MHz

• Low-Jitter Output Clocks May Be Directly

Connected to an FPGA Serializer to Meet SMPTE

SDI Jitter Specifications

• Top of Frame (TOF) Pulse with Programmable

Output Format Timing and Hi-Z Capability

• Two reference ports (A and B) With H and V Sync

Inputs

• Supports Cross-Locking of Input and Output

Timing

• External Loop Filter Allows Control of Loop

Bandwidth, Jitter Transfer, and Lock Time

Characteristics

• Free Run or Holdover Operation on Loss of

Reference

• User-Defined Free Run Control Voltage Input

• I2C Interface and Control Registers

• 3.3-V and 2.5-V Supplies

2 Applications

• Video Genlock and Synchronization

• FPGA SDI SerDes Recovered Clock Generation

• Triple Rate 3G/HD/SD-SDI SerDes

• Video Capture, Conversion, Editing and

Distribution

• Video Displays and Projectors

• Broadcast and Professional Video Equipment

3 Description

The LMH1982 device is a multi-rate video clock

generator ideal for use in a wide range of 3-Gbps

(3G), high-definition (HD), and standard-definition

(SD) video applications, such as video

synchronization, serial digital interface (SDI) serializer

and deserializer (SerDes), video conversion, video

editing, and other broadcast and professional video

systems.

The LMH1982 can generate two simultaneous SD

and HD clocks and a Top of Frame (TOF) pulse. In

genlock mode, the device's phase locked loops (PLLs) can synchronize the output signals to H sync

and V sync input signals applied to either of the

reference ports. The input reference can have analog

timing from Texas Instrument's LMH1981 multi-format

video sync separator or digital timing from an SDI

deserializer and should conform to the major SD and HD standards. When a loss of reference occurs, the

device can default to free run operation where the

output timing accuracy will be determined by the

external bias on the free run control voltage input.

The LMH1982 can replace discrete PLLs and field-

programmable gate array (FPGA) PLLs with multiple

voltage controlled crystal oscillators (VCXOs). Only

one 27.0000 MHz VCXO and loop filter are externally required for genlock mode. The external loop filter as

well as programmable PLL parameters can provide narrow loop bandwidths to minimize jitter transfer. HD

clock output jitter as low as 40 ps peak-to-peak can

help designers using FPGA SerDes meet stringent

SDI output jitter specifications.

The LMH1982 is offered in a space-saving 5 mm x 5

mm 32-pin WQFN package and provides low total power consumption of about 250 mW (typical).

更新时间:2025-7-24 15:01:00
供应商 型号 品牌 批号 封装 库存 备注 价格
TI
22+
NA
500000
万三科技,秉承原装,购芯无忧
TexasInstruments
18+
ICCLKGENMULTIRATEVID32-L
6580
公司原装现货/欢迎来电咨询!
TI
三年内
1983
只做原装正品
TI
20+
QFN-32
4500
就找我吧!--邀您体验愉快问购元件!
TI/德州仪器
24+
WQFN-32
9600
原装现货,优势供应,支持实单!
TI
22+
32WQFN
9000
原厂渠道,现货配单
TI/德州仪器
25+
WQFN32
8880
原装认准芯泽盛世!
TI/德州仪器
23+
32-WFQFN
3000
一级代理原厂VIP渠道,专注军工、汽车、医疗、工业、
TI
23+
32WQFN
9000
原装正品,支持实单
TI/德州仪器
21+
WQFN32
9990
只有原装

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Texas Instruments 美国德州仪器公司

中文资料: 22258条

德州仪器(Texas Instruments),简称TI,是全球领先的半导体公司,为现实世界的信号处理提供创新的数字信号处理(DSP)及模拟器件技术。除半导体业务外,还提供包括传感与控制、教育产品和数字光源处理解决方案。TI总部位于美国德克萨斯州的达拉斯,并在25多个国家设有制造、设计或销售机构。德州仪器是推动互联网时代不断发展的半导体引擎,作为实时技术的领导者,TI正在快速发展,在无线与宽带接入等大型市场及数码相机和数字音频等新兴市场方面,凭借性能卓越的半导体解决方案不断推动着互联网时代的前进步伐。TI预想未来世界的方方面面都渗透着TI产品的点点滴滴,每个电话、每次上网、拍的每张照片、听的每