Questions about AD7172/5/7-2

Hi.

1. Yes, since the AD7175 has a cross point multiplexer which selects any analog input combination that can be configured as an input pair, either single ended or fully differential. But please make sure that the analog input voltage should be within specifications. 

2. No, for a single channel, the settling time is required for the first conversion then all subsequent conversions occur at the selected output data rate. When multiple channels are enabled the settling time is required for the very first conversion and all the subsequent conversions requires a slightly shorter time than the first settling time. So let say for example AD7175 at ODR of 100sps using Sinc5+Sinc1 filter, the Tsettle at first conversion is 10.01ms and the Tsettle at subsequent channels will be 10ms. To visualize, you can try our Virtual Eval Tool. It is a tool that lets you play with the various features and see the performance of various ADCs online including timing. 

3. Yes, you can use separate reference for two measurements, just configure your necessary reference selection through software code.

Thanks,

Jellenie

Hi.

1. Yes, since the AD7175 has a cross point multiplexer which selects any analog input combination that can be configured as an input pair, either single ended or fully differential. But please make sure that the analog input voltage should be within specifications. 

2. No, for a single channel, the settling time is required for the first conversion then all subsequent conversions occur at the selected output data rate. When multiple channels are enabled the settling time is required for the very first conversion and all the subsequent conversions requires a slightly shorter time than the first settling time. So let say for example AD7175 at ODR of 100sps using Sinc5+Sinc1 filter, the Tsettle at first conversion is 10.01ms and the Tsettle at subsequent channels will be 10ms. To visualize, you can try our Virtual Eval Tool. It is a tool that lets you play with the various features and see the performance of various ADCs online including timing. 

3. Yes, you can use separate reference for two measurements, just configure your necessary reference selection through software code.

Thanks,

Jellenie