Implementing adc on cyclone 5

successfully done with ADC part!!

i have one more question is it possible to read a analog output on GPIO by connecting additional circuitary (DAC)

for example i want to apply analog signal on 2*5 adc header and read that on GPIO

is it possible?

thank you

Mahesh

--- Quote Start ---

successfully done with ADC part!!

i have one more question is it possible to read a analog output on GPIO by connecting additional circuitary (DAC)

for example i want to apply analog signal on 2*5 adc header and read that on GPIO

is it possible?

thank you

Mahesh

--- Quote End ---

Yes, you can use additional circuitry.

While selecting DAC circuitry take care on LSB/Resolution of DAC and GPIO capability.(i.e Whether you can detect the LSB change?)

Best Regards,

Anand Raj Shankar

(This message was posted on behalf of Intel Corporation)

is there any example related to this where i can understand something and implement ?

and i am planning to use ic ad421 which is a dac ( external circuit )to convert digital signal on gpio to analog

ADC IS 12BIT resolution which is inbuilt so

reading an input signal on 2*5 header is done !

how can i read the same analog signal on GPIO?

just similar to connecting to leds on board ?

or there is any other technique

or should i use pwm?

if there are any example it will help me alot

Hi,

1.You should have DAC resolution of at least 12 or greater is better keeping verf in consideration and also the driving strength.

2.Chose a board/Design like that, You can find the some martials from terasic for other board/daughter boards which will help you to understand requirements for your board.

Check the board below

http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=67&no=278

https://www.altera.com/content/dam/altera-www/global/en_us/portal/dsn/42/doc-us-dsnbk-42-5008051605255-d8m-gpio-user-manual.pdf

Best Regards,

Anand Raj Shankar

(This message was posted on behalf of Intel Corporation)