PACVGA105

更新时间： 2024-11-04 05:59:27

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
9页	110K
描述
VGA Port Companion Circuit

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PACVGA105 数据手册

VGA Port Companion Circuit

PACVGA105

Features

Product Description

•

Seven channels of ESD protection designed to

meet IEC-1000-4-2 Level-4 ESD requirements

( 8kV contact discharge)

Very low loading capacitance from ESD

protection diodes at less than 5pF typical

TTL to CMOS level-translating buffers for the

HSYNC and VSYNC lines

The PACVGA105 incorporates 7 channels of ESD

protection for signal lines commonly found in a VGA

port for PCs. ESD protection is implemented with

current steering diodes designed to safely handle the

high peak surge currents associated with the IEC-

1000-4-2 Level-4 ESD Protection Standard ( 8kV

•

Three independent supply pins (V_CC, V_RGBand

contact discharge). When the channels are subjected

to an electrostatic discharge, the ESD current pulse

is diverted via the protection diodes into the positive

supply rails or ground where they may be safely

dissipated.

V_AUX) to facilitate operation with sub-micron

Graphics Controller ICs

High impedance pull-ups (50kΩ nominal to V_AUX

for HSYNC and VSYNC inputs

Pull-up resistors (1.8kΩ nominal to V_CC) for

DDC_CLK and DDC_DATA lines

Compact 16-pin QSOP package

Lead-free version available

•

)

•

The upper ESD diodes for the R, G and B channels

are connected to a separate supply rail (V_RGB) to

facilitate interfacing to graphics controller ICs with low

voltage supplies. The remaining channels are

connected to the main 5V rail (V_CC). The lower diodes

for the R, G and B channels are also connected to a

dedicated ground pin (GNDA) to minimize crosstalk

due to common ground impedance.

Applications

•

ESD protection and termination resistors for VGA

(video) port interfaces

Desktop PCs

Notebook computers

LCD monitors

•

Two non-inverting buffers are also included in this IC

for buffering the HSYNC and VSYNC signals from

the graphics controller IC. These buffers will accept

TTL input levels and convert them to CMOS output

levels that swing between GND and V_CC. These

drivers have a nominal 60Ω output impedance to

match the characteristic impedance of the HSYNC

and VSYNC lines of the video cables typically used.

The inputs of these drivers also have high impedance

pull-ups (50kW nom.) pulling up to the V_AUXrail. In

addition, the DDC_CLOCK and DDC_DATA

channels have 1.8kΩ resistors pulling these inputs

up to the main 5V (V_CC) rail.

May 2010 Rev. 2

Publication Order Number:

PACVGA105/D

12 3 4 5 6 7...9

中文翻译

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与PACVGA105相关器件

型号	品牌	获取价格	描述	数据表
PACVGA105Q	ONSEMI	获取价格	VGA Port Companion Circuit
PACVGA105Q	CALMIRCO	获取价格	VGA Port Companion Circuit
PACVGA105QR	CALMIRCO	获取价格	VGA Port Companion Circuit
PACVGA105QR	ONSEMI	获取价格	VGA Port Companion Circuit
PACVGA200	ONSEMI	获取价格	VGA Port Companion Circuit
PACVGA200	CALMIRCO	获取价格	VGA PORT COMPANION CIRCUIT
PACVGA200Q	CALMIRCO	获取价格	VGA PORT COMPANION CIRCUIT
PACVGA200QR	ONSEMI	获取价格	VGA Port Companion Circuit
PACVGA201	ONSEMI	获取价格	VGA Port Companion Circuit
PACVGA201	CALMIRCO	获取价格	VGA PORT COMPANION CIRCUIT

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