Datasheet

ADS5281

ADS5282

SBAS397I –DECEMBER 2006–REVISED JUNE 2012

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Smaller effective inductance of the supply and ground It is recommended that the isolation be maintained on

pins leads to better noise suppression. For this the board by using separate supplies to drive AVDD

reason, multiple pins are used to drive each supply and LVDD, as well as separate ground planes for

and ground. It is also critical to ensure that the AVSS and LVSS. The use of LVDS buffers reduces

impedances of the supply and ground lines on the the injected noise considerably, compared to CMOS

board are kept to the minimum possible values. Use buffers. The current in the LVDS buffer is

of ground planes in the printed circuit board (PCB) as independent of the direction of switching. Also, the

well as large decoupling capacitors between the low output swing as well as the differential nature of

supply and ground lines are necessary to obtain the the LVDS buffer results in low-noise coupling.

best possible SNR performance from the device.