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AD7980ACPZ-RL7 Arkusz danych(PDF) 8 Page - Analog Devices |
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AD7980ACPZ-RL7 Arkusz danych(HTML) 8 Page - Analog Devices |
8 / 28 page AD7980 Data Sheet Rev. F | Page 6 of 26 −40°C to +125°C, VDD = 2.37 V to 2.63 V, VIO = 1.71 V to 3.3 V, unless otherwise stated. See Figure 2 and Figure 3 for load conditions. Table 5. Parameter Symbol Min Typ Max Unit Throughput Rate 833 kSPS Conversion Time: CNV Rising Edge to Data Available tCONV 500 800 ns Acquisition Time tACQ 290 ns Time Between Conversions tCYC 1.2 μs CNV Pulse Width (CS Mode) tCNVH 10 ns SCK Period (CS Mode) tSCK 22 ns SCK Period (Chain Mode) tSCK 23 ns SCK Low Time tSCKL 6 ns SCK High Time tSCKH 6 ns SCK Falling Edge to Data Remains Valid tHSDO 3 ns SCK Falling Edge to Data Valid Delay tDSDO 14 21 ns CNV or SDI Low to SDO D15 MSB Valid (CS Mode) tEN 18 40 ns CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS Mode) tDIS 20 ns SDI Valid Setup Time from CNV Rising Edge tSSDICNV 5 ns SDI Valid Hold Time from CNV Rising Edge (CS Mode) tHSDICNV 10 ns SDI Valid Hold Time from CNV Rising Edge (Chain Mode) 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 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 22 ns Timing Diagrams Figure 2. Load Circuit for Digital Interface Timing Figure 3. Voltage Levels for Timing 500µA IOL 500µA IOH 1.4V TO SDO CL 20pF X% VIO1 Y% VIO1 VIH2 VIL2 VIL2 VIH2 tDELAY tDELAY 1FOR VIO ≤ 3.0V, X = 90 AND Y = 10; FOR VIO > 3.0V X = 70, AND Y = 30. 2MINIMUM VIH AND MAXIMUM VIL USED. SEE DIGITAL INPUTS SPECIFICATIONS IN TABLE 3. |
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