AZC199-04C

Low Capacitance High ESD Level Protection Array

For High Speed I/O Port

Revision 2011/07/30

©2011-2012 Amazing Micro.

7

www.amazingIC.com

DDCA_SDA

VDD

100

Ω

Ω

Ω

Ω

10K

Ω

Ω

Ω

Ω

to scaler

DDC_Data

6

5

4

1

2

3

VDD

VGA5V

System

5V

BAV70

0.1uF

FB

DDCA_SDA

VGA5V

DDCA_SDA

Monitor Site

Source Site

(e.g. MB)

Fig. 5 The occurred back drive current when the source is at OFF state and the display device is

at ON state.

DDCA_SDA

VSYNC

HSYNC

DDCA_SCL

VSYNC

HSYNC

Red

Green

Blue

DDCA_SCL

DDCA_SDA

VSYNC

HSYNC

DIG_GND

Red_GND

Green_GND

Blue_GND

DSUB-5V

GND

FB 0

Ω

Ω

Ω

Ω

75

Ω

Ω

Ω

Ω

Red

75

Ω

Ω

Ω

Ω

Green

75

Ω

Ω

Ω

Ω

Blue

FB 0

Ω

Ω

Ω

Ω

FB 0

Ω

Ω

Ω

Ω

5.6pF

0.047uF

100

Ω

Ω

Ω

Ω

to scaler Red

5.6pF

0.047uF

100

Ω

Ω

Ω

Ω

to scaler Green

5.6pF

0.047uF

100

Ω

Ω

Ω

Ω

to scaler Blue

2.2K

Ω

Ω

Ω

Ω

220pF

1K

Ω

Ω

Ω

Ω

2.2K

Ω

Ω

Ω

Ω

33pF

1K

Ω

Ω

Ω

Ω

FB 120

Ω

Ω

Ω

Ω

DDCA_SDA

System 5V

100

Ω

Ω

Ω

Ω

10K

Ω

Ω

Ω

Ω

DDCA_SCL

100

Ω

Ω

Ω

Ω

10K

Ω

Ω

Ω

Ω

to scaler VSYNC

to scaler HSYNC

to scaler DDC_Data

to scaler DDC_CLK

15-pin

VGA connector

DSUB-5V

Green

Red

Detect

Blue

Detect

ESD Protection Design

6

5

4

1

2

3

6

5

4

1

2

3

DSUB-5V

DSUB_5V

System

5V

BAV70

or

BAT54

EEPROM

System 5V

Fig. 6 The ESD design for a VGA INPUT port which two AZC199-04C are used.