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ESD Protection requirement for SDI interface

Madhu Sharma

Expert 2915 points

Other Parts Discussed in Thread: LMH0302, LMH0344, TPD4E02B04

Hi,

I am using SDI driver with part number LMH0302 and equalizer with part number LMH0344 in my design. Since the PCB is to be used in industrial area, I am planning to place the ESD protection circuitry at the output of driver and input of the receiver. Please suggest me the parts that can be used with these SDI devices.

Thanks & Regards

Madhu Sharma K

over 7 years ago

0 Nasser Mohammadi over 7 years ago

TI__Guru* 88775 points

Hi Madhu,

Normally SDI customers do not use ESD protection devices. There are a couple of reasons:

1). Most of these equipment are within building.

2). Secondly, using ESD protection diodes normally introduce parasitic that can violate SMPTE return loss requirement.

If you must use ESD protection diodes, please use ESD devices with less than 0.3pF loading capacitors.

Regards,,nasser

0 Madhu Sharma over 7 years ago in reply to Nasser Mohammadi

Expert 2915 points

Hi Nasser,

Whether TI has any ESD IC/ Diode which is suitable for SDI interface?

Regards
Madhu Sharma

0 Mizanur Chowdhury over 7 years ago in reply to Madhu Sharma

TI__Genius 17270 points

Hello Madhu,

The TPD4E02B04 device offers 0.25-pF IO capacitance per channel which makes it suitable for protecting high-speed interfaces up to 10 Gbps:

Regards,

Mizanur