Specific series of Xilinx FPGAs do have in built ADCs.

Have a look into their website to get into the proper series for your concern.

Yes, There are FPGA´S with adcs, an example is XILINX, and im not sure but the altera DE70 also have it.

The Microsemi Fusion series has internal ADC. We have some of them and they work really good.

worse case, you can integrate ADC similar with microcontroller.. after all it just a controller..

Is easier to use an external ADC, an control it with a microcontroller

built-in ADCs are not commonly available. However it will cost more.

Altera Nano board has on board 12 bit ADC with good support so u can use it

xilinx spartan 3e fpga board also has both adc and dac on board.

There are a lot of FPGA kits with ADCs.  But if you mean an FPGA chip with built-in ADC, then you should try the Actel Fusion Mixed FPGA chips.

http://www.microsemi.com/products/fpga-soc/fpga/fusion

Altera has the MAX 10 series of FPGAs that include one or two multi channel 12 bit ADCs

@jivan parab can we interface altera nano board with camera

Can any suggest, fpga board for integrating with camera and suitable for image processing applications

Satish Kumar Terasic makes two camera boards (5Mpix and 8Mpix) that uses a standard 2x20 connector: https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=68&No=281

Actel fusion has built in chip ADC and to interface camera you can use altera boards from terrasic

Xilinx Zynq has ADCs on chip, called XADC;

Maybe other modern Xilinx FPGA have too.

I want an embedded 14 bit ADC running at 15 MHz on a FPGA. The lower the power the better - it needs to run on lower power source.