I’m hoping to use ADS8556 device as the primary ADC as a numerical relay. But I’m not much familiarizing with this device.
My requirement is getting 16 bit ADC out in 3 simultaneous channels. Sample speed is 50ksps is enough for me. Hope to take inputs from CT in a power system. So some sort of protections is also needed.
If anyone can give me some further details about this device and how can I getting start this it will be very helpful for me. Also if anyone having a single layer PCB for this ADC it will be very helpful for me. If any one of you guys used this device before please help me to get this solved. Thank you
Surendra,
The best place to get started with any device is the datasheet. Make sure you spend some time studying the electrical characteristics tables, timing diagrams / requirements for the interface of your choice, and the 'General Description' section. We do our best to make sure that just about everything you need to know to use a device is included in the datasheet, outside of fundamentals. Do you have specific concerns or questions?
You may also want to look at the ADS8556EVM to get some direction toward your schematic. The PCB for the EVM is a 4-layer board, we do not have any designs for the ADS8556 on as single layer board since it is typically not a practical design decision. The EVM would probably also be useful for you to use to begin developing your firmware to interface with the device.
What kind of protection would you like to see? Analog protection from the ADS8556 and the signal-path? Digital protection on the ADS8556 communication lines?
-------------------------------------- Kevin Duke Precision DAC Applications
I need an Analog protection for the signal-path. And is it ok if I use some analog filters in series with the device (for the input signal path)?
I faced a bigger problem with constructing 4 layers PCB. With resource limitations I can’t develop 4 layers PCB in small quantity. If I asked for that kind of PCB from a PCB developer he asks to go for a massive production line. But I needed only two or three of them for testing purposes.
If you can provide basic PCB which is not exceeding two layers it will be very helpful. I only needed three channels of inputs for three simultaneous signal processing.
Surendra GonawalaI need an Analog protection for the signal-path.
You can check out some of our isolation amplifiers and see if those are a good fit for you. Look at ISO122 and/or ISO124.
Surendra Gonawala I faced a bigger problem with constructing 4 layers PCB. With resource limitations I can’t develop 4 layers PCB in small quantity. If I asked for that kind of PCB from a PCB developer he asks to go for a massive production line. But I needed only two or three of them for testing purposes. If you can provide basic PCB which is not exceeding two layers it will be very helpful. I only needed three channels of inputs for three simultaneous signal processing.
Have you looked at Sierra Proto? http://www.protoexpress.com/
You can get a 4 layer no-touch board done there for pretty cheap, $50 or so each I think.