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TA0310

更新时间： 2024-09-23 03:29:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		运算放大器
页数	文件大小	规格书
14页	414K
描述
High Speed Operational Amplifiers for 75ヘ Video Lines

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TA0310 数据手册

TA0310

TECHNICAL ARTICLE

High Speed Operational Amplifiers

for 75Ω Video Lines

Christophe Prugne

Technical Marketing, Standard Linear Division

1 Introduction

This paper examines the video applications in which high-speed op-amps can be found.

An overview of the main consumer video applications is presented, along with a review of analog video

formats and bandwidth versus resolution.

Finally, we present ST’s current high-speed op-amp portfolio and give technical support for the

implementation of these products in application.

2 Video applications

Currently, there are two types of video applications: broadcast video and graphics video. Broadcast video

is limited to television signal transmissions with specified bandwidth (Television, Set-Top-Box, DVD

player-recorder, Video Camera, etc.). On the other hand, graphics video meets the needs of computers

without bandwidth limitations. This article is mainly concerned with broadcast video applications.

3 Where do we need high-speed op-amps?

An amplifier stage is needed to drive analog video signals to the television via a 75Ω video line. The

applications concerned are mostly consumer applications such as set top boxes, DVD player-recorders

and video cameras. In these applications, the output capabilities of the amplifier (output current and

distortion versus load) are very important, as it must drive a video line characterized by low impedance

(75Ω for video lines).

Televisions also require high-speed op-amps. In TVs; the amplifier ensures good impedance matching

between the video line and the input stage in the TV. The amplifier drives the video signal to the input

stage of a chipset, which features high impedance (on the order of several kΩ) in parallel with a

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型号	品牌	获取价格	描述	数据表
TA031-035-30-30	TRANSCOM	获取价格	3.1 - 3.5 GHz 1W Amplifier
TA031-035-40-10	TRANSCOM	获取价格	3.1 - 3.5 GHz Low Noise Amplifier
TA031-035-43-43	TRANSCOM	获取价格	3.1 - 3.5 GHz 20 W Amplifier
TA0311A	TAI-SAW	获取价格	SAW Filter 420MHz SMD 5.0×5.0mm
TA0312A	TAI-SAW	获取价格	SAW Filter 460MHz SMD 5.0×5.0mm
TA0313	STMICROELECTRONICS	获取价格	STMicroelectronics Solutions for ADSL Line Interfaces
TA0313A	TAI-SAW	获取价格	SAW Filter 465MHz SMD 5.0×5.0mm
TA0314A	TAI-SAW	获取价格	SAW Filter 1150MHz SMD 3.0×3.0mm
TA0315A	TAI-SAW	获取价格	SAW Filter 1575.42 MHz SMD 3X3 mm
TA0316A	TAI-SAW	获取价格	SAW Filter 1575.42 MHz SMD 3X3 mm