THS7364设计的六路低功耗HD(SD)视频技术

本文介绍了THS7364功能方框图,多种应用电路图以及THS7364EVM评估板主要特性,电路图,材料清单和PCB布局图.

THS7364是TI 公司的采用SiGe BiCom3X工艺的六路低功耗HD(SD)视频缓冲器,集成了三个SDTV滤波器(9.5-MHz)和三个全HD的HDTV滤波器(72-MHz),所有滤波器具有可旁通的6阶Butterworth特性, 内置增益6-dB (2 V/V) ,单电源+2.7V 到+5V工作,主要用在STB,PVR/DVDR和BluRay输出视频缓冲器.

THS7364应用:

Set Top Box Output Video Buffering

PVR/DVDR Output Buffering

BluRay™ Output Video Buffer


图1.THS7364功能方框图

图2.THS7364单电源DC输入/DC输出耦合视频线路驱动器

图3.THS7364典型的6路系统:DC耦合编码器/DAC输入/,DC耦合线路驱动

图4.THS7364典型的6路系统:DC耦合线路驱动,每路两个输出

图5.THS7364典型AC输入系统驱动AC耦合视频线路

THS7364EVM评估板

The THS7364EVM is an evaluation module for the THS7364 in the PW (20-lead TSSOP) package. The THS7364EVM is designed to quickly and easily demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured with a 75 ohm input and output termination. The THS7364 evaluation module (EVM) User’s Guide is included within the Product Datasheet.

THS7364EVM评估板主要特性:

Configured with 75 ohms input/output impedance

Single Supply: 2.7V to 5V Decoupling capacitors

Connectors: Vs+, GND, INPUT, OUTPUT and test points

Input and output connectors support both BNC and RCA/S-video connections

Four Jumpers allow device configuration for SD-disable, FHD-Disable, SD-bypass, FHD-bypass


图6.THS7364EVM评估板电路图

THS7364EVM评估板材料清单(BOM):


图7.THS7364EVM PCB顶层布局图