How to interface to this ADC with 'serial' interface

Projects Networking, Protocols, and Devices
1

Hello, beginner here: how would I connect to this adc: ADS7886 data sheet, product information and support | TI.com ? Is it a serial SPI, or what? Also what kind of input do I write to the SCLK?

thanks!

2

Connect SDO to MISO (D12), SCK to SCK (D13), and CS to SS (typically D10).

digitalWrite(SS_pin, LOW);
byte MSB = SPI.transaction(0);
byte LSB = SPI.transaction(0);
digitalWrite(SS_pin, HIGH);

unsigned int Value = MSB * 256 + LSB;
3

sorry, could you explain the code?
I know that the first line tells the acd to start sampling
what does SPI.transaction(0) do? couldn't find it in the SPI library reference page
also how does the last line work?
Besides that: how does the arduino know how fast to pulse the CLK?

How would I connect two different ADC's to the same arduino then?
I read i can't use the same SS, and there's only one MISO input...

4

Oops. I meant 'transfer' when I said 'transaction': SPI - Arduino Reference

Setting clock speed: SPI - Arduino Reference

You can use the same MISO and SCK pins for multiple SPI device, only the SS pin is different for each.