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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).
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
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