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AD7980 Datasheet(PDF) 5 Page - Analog Devices |
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AD7980 Datasheet(HTML) 5 Page - Analog Devices |
5 / 22 page Preliminary Technical Data AD7980 Rev Pr C | Page 5 of 22 TIMING SPECIFICATIONS −40°C to +85°C, VDD = 2.37 V to 2.63 V, VIO = 2.3 V to 5.5 V, unless otherwise stated. Table 4. 1 Parameter Symbol Min Typ Max Unit Conversion Time: CNV Rising Edge to Data Available tCONV 350 750 ns Acquisition Time tACQ 250 ns Time Between Conversions tCYC 1000 ns CNV Pulse Width ( CS Mode ) tCNVH 10 ns SCK Period ( CS Mode or Chain mode) tSCK ns VIO Above 4.5 V 10 ns VIO Above 3 V 10.5 ns VIO Above 2.7 V 11.5 ns VIO Above 2.3 V 12.5 ns VIO Above 1.7 V 14.5 ns SCK Low Time tSCKL 3 ns SCK High Time tSCKH 3 ns SCK Falling Edge to Data Remains Valid tHSDO 3 ns SCK Falling Edge to Data Valid Delay tDSDO VIO Above 4.5 V 7.5 ns VIO Above 3 V 8 ns VIO Above 2.7 V 9 ns VIO Above 2.3 V 10 ns VIO Above 1.7 V 13 ns CNV or SDI Low to SDO D15 MSB Valid (CS Mode) tEN VIO Above 3 V 10 ns VIO Above 2.3 V 15 ns CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS Mode) tDIS 15 ns SDI Valid Setup Time from CNV Rising Edge tSSDICNV 15 ns SDI Valid Hold Time from CNV Rising Edge tHSDICNV 0 ns SCK Valid Setup Time from CNV Rising Edge (Chain Mode) tSSCKCNV 5 ns SCK Valid Hold Time from CNV Rising Edge (Chain Mode) tHSCKCNV 5 ns SDI Valid Setup Time from SCK Falling Edge (Chain Mode) tSSDISCK 2.5 ns SDI Valid Hold Time from SCK Falling Edge (Chain Mode) tHSDISCK 3 ns SDI High to SDO High (Chain Mode with BUSY indicator) tDSDOSDI 15 ns 1 See Figure 2 and Figure 3 for load conditions. |
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