This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: TS3V340
Could it support pure Component(SOG) Signal or not? (ex:720p or 1080p)
Julian, The TS3V340 device, like all Ti passive FET switches, will support any signal as long as the protocol is within the recommended operating conditions of 0-5.5 V and signal bandwidth is about 150 MHz or less. We recommend the switch bandwidth is about 3 times the signal bandwidth to have margin for system and PCB parasitic effects. What is the voltage range and bandwidth of your composite video signals?
It looks like NTSC signals are 1 V p-p with a 0.714 V DC offset which is within the recommended operating conditions of 0-5.5v of the device.
Also the bandwidth will depend on how many factors such as the screen resolution, screen refresh rate, etc.
Thank you, Adam
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Adam Torma:
Thanks for your reply.
I have another question as below.
1. As I know, "Composite Video Switching" need to support negative sync level which about -300mV. But IC recommand just only 0V, is it OK for this condition?
2. VCC recommand is 3.6V. If I use 5V input, Does IC have any issue?
In reply to Julian Chen:
1) TI cannot guarantee the datasheet performance in the electrical specifications table if the device is operated outside the recommended operating conditions. It could be possible to add a DC bias if you are concerned about the device receiving a negative voltage.
2) The recommended I/O voltage for this device is 0 to 5.5V. This spec is not referenced to Vcc.
Datasheet show can support Composite Video switch which voltage as low as -300mV.It confuse me about the datasheet.
Could you clear up confusion?
Thanks a lot!
This device was designed for video applications back in 2004 and many customers have successfully used this device over the years.
You can see in the abs max spec there is a note 2 that states I/O voltage ratings may be exceeded if the current clamp ratings are observed. There are protection circuits that act like diodes on the I/O pins. If the I/O voltage becomes increasingly negative the protection circuit will become forward biased and begin to sink current clamping the voltage on the pin. Based on this spec you can see that this will happen around -0.5 V.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.