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SRV05-4A
PROTECTION PRODUCTS
DVI Protection
The small geometry of a typical digital-visual interface
(DVI) graphic chip will make it more susceptible to
electrostatic discharges (ESD) and cable discharge
events (CDE). Transient protection of a DVI port can
be challenging. Digital-visual interfaces can often
transmit and receive at a rate equal to or above
1Gbps. The high-speed data transmission requires the
protection device to have low capacitance to maintain
signal integrity and low clamping voltage to reduce
stress on the protected IC. The SRV05-4A has a low
typical insertion loss of <0.4dB at 1GHz (I/O to ground)
to ensure signal integrity and can protect the DVI
interface to the 8kV contact and 15kV air ESD per IEC
61000-4-2 and CDE.
Figure 7 shows how to design the SRV05-4A into the
DVI circuit on a flat panel display and a PC graphic
card. The SRV05-4A is configured to provide common
mode and differential mode protection. The internal
TVS of the SRV05-4A acts as a 5 volt reference. The
power pin of the DVI circuit does not come out through
the connector and is not subjected to external ESD
pulse; therefore, pin 5 should be left unconnected.
Connecting pin 5 to Vcc of the DVI circuit may result in
10/100 ETHERNET PROTECTION
Ethernet ICs are vulnerable to damage from electro-
static discharge (ESD). The internal protection in the
PHY chip, if any, often is not enough due to the high
energy of the discharges specified by IEC 61000-4-2.
If the discharge is catastrophic, it will destroy the
protected IC. If it is less severe, it will cause latent
failures that are very difficult to find.
In a typical 10/100 system, the twisted-pair interface
for each port consists of two differential signal pairs:
one for the transmitter and one for the receiver, with
the transmitter input being the most sensitive to
damage. The fatal discharge occurs differentially
across the transmit or receive line pair and is capaci-
tively coupled through the transformer to the Ethernet
chip. Figure 8 shows how to design the SRV05-4A on
the line side of a 10/100 ethernet port to provide
differential mode protection. The common mode
isolation of the transformer will provide common mode
protection to the rating of the transformer isolation
which is usually >1.5kV. Figure 9 shows how to
implement the SRV05-4A on the IC side of the 10/
100 Ethernet circuit.
damage to the chip from ESD current.
Figure 7 - Digital Visual Interface (DVI) Protection
? 2010 Semtech Corp.
8
www.semtech.com
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相关代理商/技术参数
SRV05-4ATCT
制造商:Semtech Corporation 功能描述:ESD Suppressor Diode Arrays 15KV 6-Pin SOT-23 T/R 制造商:Semtech Corporation 功能描述:TVS DIODE 5V 4CH BI SOT23-6 制造商:Semtech Corporation 功能描述:SRV05-4A Series 6 V 5 pF Uni-Directional TVS Diode Array - SOT-23-6L 制造商:SEMTECH 功能描述:LEAD FREE ESD PART
SRV05-4ATR
功能描述:TVS DIODE 5VWM 17.5VC SOT23 制造商:smc diode solutions 系列:- 包装:剪切带（CT） 零件状态:有效 类型:转向装置（轨至轨） 单向通道:- 双向通道:4 电压 - 反向关态（典型值）:5V（最大） 电压 - 击穿（最小值）:6V 电压 - 箝位（最大值）@ Ipp:17.5V 电流 - 峰值脉冲（10/1000μs）:5A（8/20μs） 功率 - 峰值脉冲:- 电源线路保护:是 应用:以太网 不同频率时的电容:3.2pF @ 1MHz 工作温度:-55°C ~ 125°C（TJ） 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商器件封装:SOT-23-6 标准包装:1
SRV05-4HTG
功能描述:TVS二极管阵列 6V 0.1uA 20kV ESD Contact
RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
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SRV05-4L_13
制造商:MCC 制造商全称:Micro Commercial Components 功能描述:5 Volts ESD Protection Device Low clamping voltage
SRV05-4LC
制造商:PROTEC 制造商全称:Protek Devices 功能描述:ultra low capacitance steering diode/tvs array
SRV05-4LC_12
制造商:PROTEC 制造商全称:Protek Devices 功能描述:ULTRA LOW CAPACITANCE STEERING DIODE/TVS ARRAY
SRV05-4L-TP
功能描述:ESD 抑制器 5V, 2.0uA 5V, 2.0uA
RoHS:否 制造商:STMicroelectronics 通道:8 Channels 击穿电压:8 V 电容:45 pF 端接类型:SMD/SMT 封装 / 箱体:uQFN-16 功率耗散 Pd: 工作温度范围:- 40 C to + 85 C