4-8 Channel ADC for Altera DE2-115 using Simultaneous Sampling

Thanks a lot for the valuable information James. This looks to be a good part, but it still is 14-bits.

I have valuable data coming in from an accelerometer. So this data needs to be sampled to at least a 16-bit resolution.

So for a 16-bit, I tried to look this one up:

I tried to look up LTC1865 . Considering the sampling rate that I require, which is definitely less than 250khz, I guess this can be better than LTC1470.

I have looked up these too,

TI has the ADS8556 , which is good

Analog Devices has AD7606-6

But I havent worked with the Verilog/VHDL before much, just simple gate/logic/mux designing and am completely new to the NIOSII, so I do not know how I am going to interface this to the FPGA. I definitely know the SPI and I2C buses, but then, what about the driver for these ADCs and their initialization?

I appreciate your consideration in helping me out for the VHDL driver, which I must say will be extremely valuable to me, since I am a complete beginner at everything.

Wont the specific ADCs be required to be initialized using their specific firmware from the Manufacturer?

Also, I will have to design a board myself for interfacing this as a peripheral through the GP I/O lines on the DE2-115 board, right? Because this just comes in as a chip and I will have to put it on a GP board and come up with the Pull Ups and the Noise Cancelling Caps etc?

Excuse me for being to naive and asking stupid questions, but I am a complete beginner and have been assigned this task, which although doesn't have a deadline, needs to be completed at a satisfactory pace, since this is applied research for professor that I work for, and he hasn't worked on FPGAs ever before.

Hope you can help me more. Thanks a lot again!! :)