Pin assignments for ADC / DAC

[EEbubba]

Hello,

I am building my senior design project and need some help with the pin assignments for the 8-bit ADC --TLC0820AC (TI instruments). I've taken a look at the data sheet. Which has helped out some.

http://focus.ti.com/lit/ds/symlink/tlc0820a.pdf

The pins that I'm troubled with are the following: CS (chip select), INT (Interrupt), Mode, OFLW, RD and WR/RDY.

The data sheet states that a pin may be low or high... Is there a typical setup that I can use, whatever that may be.

Right now, I'm just testing the ADC and a DAC before I build my complete circuit...seeing if what I put in is what I get out, etc. The software that I'm using only has generic ADC/DAC and not any "real world" ones that I can test.

thanks in advance

EEbubba

Any help on this would be much appreciated...

 

[Valkarie]

For the CS pin, this needs to be connected to a "chip select" line from your microcontroller or other logic device. This is usually a digital output that can be set high or low. When low, it tells the ADC that it's enabled and should begin taking readings.The INT pin is an interrupt output from the ADC. It is used to signal to the microcontroller when new data is available. This will typically be connected to an interrupt pin on the microcontroller.The Mode pin allows you to configure the ADC for single-ended or differential operation. This is usually set with a digital output line from the microcontroller.The OFLW pin is an open drain output. This is used to indicate overflow conditions in the ADC. This should be connected to a digital input line on the microcontroller.The RD and WR/RDY pins are used for data transfer between the ADC and the microcontroller. The RD pin is a digital input from the microcontroller, and WR/RDY is a digital output from the microcontroller. These two pins should be connected together, as they are used to coordinate the data transfer.

 

[Mene]

Hello EEbubba,

I am happy to assist you with your pin assignments for the 8-bit ADC TLC0820AC. The data sheet is definitely a helpful resource for understanding the pin functions. For the CS (chip select) pin, this is used to select the device for communication. You can set this pin to either a logic high or logic low depending on your setup. The INT (interrupt) pin is used to signal when the conversion is complete. This can also be set to either a high or low state. The Mode pin is used to select the mode of operation for the ADC, such as single-ended or differential. This will depend on your specific application. The OFLW pin is used to indicate when an overflow has occurred in the conversion. This can be set to either high or low depending on your needs. The RD and WR/RDY pins are used for reading and writing data to and from the ADC. These can also be set to either high or low depending on your setup.

In terms of a typical setup, it will depend on your specific project and what you are trying to achieve. I recommend consulting with your project advisor or other experts in the field for guidance on the best pin assignments for your particular application.

In the meantime, it is great that you are testing the ADC and DAC before building your complete circuit. This will help ensure that your design is functioning as expected. If you are unable to find "real world" ADC and DAC options in your software, you can try simulating different scenarios to see how the ADC and DAC respond.

I hope this information helps and I wish you all the best with your senior design project.