Answer:
Turning the LVDS output stage out of the high-impedance state is slower than doing the same for the CMOS driver. This is because the LVDS bus needs some internal circuit bias points to generate…
That would depend on your SCKI frequency, the packet format and the desired throughput. The below calculator will let you configure:
the generic within the AD485x family
the SCKI frequency
the…
No, there is no specific power up sequencing requirement. However, care must always be taken not to violate the Absolute Maximum Ratings. The internal power-on-reset (POR) ensure proper re-initialization…
The zero scale error is expressed in µV in the datasheet, and this spec should cover for all Softspan ranges. In order to convert to convert to LSBs this should be divided by the LSB size shown in Table…
The specification table in the datasheet shows the Dynamic Range as a function of the Softspan range. As shown in Figure 1, each Softspan range has a flat input referred noise, independent of the input…
The oversampling digital filter allows to improve the noise performance, increasing the Dynamic Range in 3dB every time the Oversampling Ratio (OSR) is doubled. This comes at the expense of reducing the…
Given its large input impedance, meaning minimal input current, the AD4858 can be directly connected to any sensor no matter its output impedance. However, if the components in the front-end have any known…
The AD4858’s input buffers accept a wide common mode with 120 dB CMRR. That is, the differential inputs can arbitrarily swing around anywhere between V EE +3.2 V and V CC -3.2 V.
Being a SAR ADC, the CNV does not necessarily need to run at periodic frequency. Every time a CNV pulse is applied, the AD4858 provides a digital output. If oversampling is enabled with a given OSR, as…
The output data point 1 is the average of samples 1-128, output data point 2 is the average of samples 129-256, and so on. The frequency response is a pure SINC1 with notches defined by the oversampling…