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VGA7S019 PDF预览

VGA7S019

更新时间: 2024-11-25 00:49:47
品牌 Logo 应用领域
友顺 - UTC /
页数 文件大小 规格书
7页 181K
描述
7-CHANNEL INTEGRATED ESD SOLUTION

VGA7S019 数据手册

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UNISONIC TECHNOLOGIES CO., LTD  
VGA7S019  
Preliminary  
TVS DIODE  
7-CHANNEL INTEGRATED  
ESD SOLUTION FOR VGA  
PORT WITH INTEGRATED  
LEVEL SHIFTER AND  
MATCHING IMPEDANCE  
DESCRIPTION  
The UTC VGA7S019 is an ESD solution for the VGA or DVI-I  
port connector. This device integrates ESD protection for all  
signals, level shifting for the DDC signals and buffering for the  
SYNC signals. ESD protection for the VIDEO, DDC and SYNC  
lines is implemented with low-capacitance current steering  
diodes.  
Separate positive supply rails are provided for the VIDEO, DDC and SYNC channels to facilitate interfacing with  
low voltage video controller ICs to provide design flexibility in multi-supply-voltage environments.  
Two non-inverting drivers provide buffering for the HSYNC and VSYNC signals from the video controller IC  
(SYNC1, SYNC2). These buffers accept TTL input levels and convert them to CMOS output levels that swing  
between Ground and VCC_SYNC, which is typically 5V. Additionally, each driver has a series termination resistor  
(RT) connected to the SYNC_OUT pin, eliminating the external termination resistors typically required for the  
HSYNC and VSYNC lines of the video cable. At the SYNC output the UTC VGA7S019 offers 65-, 55-, or 15-Ω  
series termination resistor option to match different transmission line impedances.  
Two N-channel MOSFETs provide the level shifting function required when the DDC controller is operated at a  
lower supply voltage than the monitor. The gate terminals for the MOSFETs (VCC_DDC) should be connected to the  
supply rail (typically 3.3V) that supplies power to the transceivers of the DDC controller.  
The UTC VGA7S019 confirms the IEC61000-4-2 (Level 4) system level ESD protection and ±15KV HBM ESD  
protection. This device is offered in space-saving SSOP-16 packages.  
FEATURES  
* 7 Channels of ESD protection for all VGA port connector  
pins meeting IEC-61000-4-2 Level 4 ESD requirements  
(±8kV contact discharge)  
* 5V drivers for HSYNC and VSYNC lines  
* Very low loading capacitance from ESD protection  
diodes on VIDEO lines (2.5pF)  
* Integrated impedance matching resistors on sync lines:  
VGA7S019-15: 15Termination  
VGA7S019-55: 55Termination  
* Bi-Directional level shifting N-Channel FETs  
provided for DDC_CLK and DDC_DATA channels  
* Flow-Through single-in-line pin mapping ensures no  
additional board layout burden while placing the ESD  
protection chip near the connector  
VGA7S019-65: 65Termination  
* Includes ESD protection, level-shifting, buffering and  
sync impedance matching  
www.unisonic.com.tw  
1 of 7  
Copyright © 2016 Unisonic Technologies Co., Ltd  
QW-R223-024.c  

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