Making the Interface more robust

Q Are there any precautions that should be taken to make the interface more robust? A The AD7176-2 has optional CRC protection for the interface so turning this on will make the interface more robust. Using CS will also make the interface more robust as when CS goes high the serial interface is set to a known state and any interference whilst CS is high will be ignored.

AD7176-2 Settle in a Single Cycle

Q Can the ADC be configured to settle in a single cycle? A Yes, setting the SING_CYC bit will allow this. It should be noted that the Sinc5+Sinc1 filter will settle in a single cycle at output data rates of 10 kSPS and lower regardless of whether the SING_CYC bit is set or not.

AD7176-2: Channel Scan Rate

Q The AD7176-2 has a maximum output data rate of 250 kSPS but a channel scan rate of 50 kSPS/channel. What does this mean? A When operating on a single channel the AD7176-2 can output data at up to 250 kSPS. However, when more than one channel is enabled the full filter settling time must be allowed for each channel. The data rate for fully settled data is 50 kSPS. So, if using 2 channels the output data rate for each channel is 50 kSPS/2 which is 25 kSPS.