ADC

Baiju's picture

Offline

Joined: Nov 12, 2018

Replies: 5
ADC
November 27, 2018 - 9:27pm

HI 

     Pls tell me the IC no. of commonly available PIC  having ADC which is 16 bits wide or above 16 bits (20 bits or 24 bits  ?).  

For the UART tutorial, I have maxim232 IC & my computer has a COM port. Can I connect to the comport TX RX instead of RS to USB converter?

If yes, will the Hyper terminal  help me for the communication?  Is there any thing else that should be taken care of?

Thanks in advance.

Baiju.

Aswinth Raj's picture

Offline

Joined: Aug 16, 2016

Replies: 798
The microcontroller USART
November 28, 2018 - 12:11pm

The microcontroller USART works with TTL logiv and you computer can understand Rs232 or TTL logic, so you can use an FTDI module or an max232 module to communicate with your PC through USART.

The later method is explained in this tutorial https://circuitdigest.com/microcontroller-projects/uart-communication-us...

 Pls tell me the IC no. of commonly available PIC  having ADC which is 16 bits wide or above 16 bits (20 bits or 24 bits  ?).  

20 or 24 bit ADC serioulsy? What applications are trying to fit in these. 12-bit is the maximum ADC resolution from PIC normally although there some dedocated ones with 16-bit ADC but unless you are working with micor volts it wont be needed.

Think about it a 16-bit ADC at 5V means each count is 76uV. What would you supposedly do with such resolution?

Baiju's picture

Offline

Joined: Nov 12, 2018

Replies: 5
ADC
November 29, 2018 - 4:28pm

Hi Aswinth,

                     I am new to Microcontrollers. As part of my studies, I tried to connect a LM 35 temp transducer, its working. its resolution is +-.5 degree C. if  ADC of higher bit width is available I thought I can increse its resolution to +-.1 degree C with out using an amp. this was the reason for that question & the calculation that u gave (76 microvolt per count) didnt strike me. Thank u very much.  I will try with Maxim 232  for the UART tutorial.

Thank u very much.

BT.

Baiju's picture

Offline

Joined: Nov 12, 2018

Replies: 5
ADC
November 29, 2018 - 4:28pm

Hi Aswinth,

                     I am new to Microcontrollers. As part of my studies, I tried to connect a LM 35 temp transducer, its working. its resolution is +-.5 degree C. if  ADC of higher bit width is available I thought I can increse its resolution to +-.1 degree C with out using an amp. this was the reason for that question & the calculation that u gave (76 microvolt per count) didnt strike me. Thank u very much.  I will try with Maxim 232  for the UART tutorial.

Thank u very much.

BT.