the data sheet implies 0.81 from 72000e, 9uV/e and 0.8V/(lx.s)਀㜀㈀　　　 砀 㤀甀瘀 㴀 㘀㐀㠀洀嘀 嬀氀椀欀攀氀礀 㘀㔀　洀嘀 椀渀琀攀渀搀攀搀崀
Hsat = 648/800 = 0.81 lx.s਀匀猀愀琀 㴀 㜀㠀⼀　⸀㠀㄀ 縀 㤀㔀
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