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參數(shù)資料
| 型號(hào)： | CM2010-02MR |
| 廠商： | California Micro Devices Corporation |
| 英文描述： | VGA Port Protection with Integrated Sync Buffers |
| 中文描述： | VGA端口保護(hù)與綜合同步緩沖器 |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大小： | 95K |
| 代理商： | CM2010-02MR |
2004 California Micro Devices Corp. All rights reserved.
09/10/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
1
CM2010
PRELIMINARY
VGA Port Protection with Integrated Sync Buffers
Features
3 channels of ESD protection for RGB output pins
meeting IEC-61000-4-2 Level 4 ESD requirements
(8kV contact discharge)
Very low loading capacitance from ESD protection
diodes on VIDEO lines, 4pF typical
3.3/5V 24mA buffer drivers for HSYNC and
VSYNC lines
VESA Video Signal Standard (VSIS) - Version 1,
Rev. 2 Compatible Outputs
Compact 10-lead MSOP package
Lead-free version available
Applications
VGA and DVI-I ports in:
- Desktop and Notebook PCs
- Graphics Cards
- Set Top Boxes
Product Description
The CM2010 connects between a video graphics con-
troller, embedded in a PC or in a graphics adapter
card, and the VGA port connector. The CM2010 inte-
grates ESD protection for 3 VGA output signals imple-
mented with low-capacitance current steering diodes
such that an ESD pulse is diverted into either the posi-
tive supply rail or ground, where it may be safely dissi-
pated.
All ESD diodes are designed to safely handle the high
current spikes specified by IEC61000-4-2 Level 4 ESD
(8kV contact discharge).
Two 24mA non-inverting drivers provide buffering for
the HSYNC and VSYNC signals from the video control-
ler IC (SYNC1, SYNC2). These buffers accept low volt-
age input levels and convert them to CMOS output
levels that swing between Ground and V
CC_SYNC
,
which is typically 5V for Legacy VESA compatibility,
but can be operated at 3.3V. Additionally, the output
impedance of the drivers can be discretely adjusted via
external series termination resistors (R
T
) for maximum
flexibility. The output impedance of the drivers can be
adjusted over a wide range from 15
to over 100
.
The CM2010 is supplied in a 10-lead MSOP package
and is available with optional lead-free finishing.
Simplified Electrical Schematic
VIDEO_1
VIDEO_2
VIDEO_3
V
CC_VIDEO
GND
V
CC_SYNC
3
4
5
6
2
9
SYNC_IN1
SYNC_IN2
SYNC_OUT1
SYNC_OUT2
7
8
10
1
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