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EVAL-AD7699CBZ Datasheet(PDF) 5 Page - Analog Devices |
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EVAL-AD7699CBZ Datasheet(HTML) 5 Page - Analog Devices |
5 / 28 page AD7699 Rev. 0 | Page 5 of 28 TIMING SPECIFICATIONS VDD = 4.5 V to 5.5 V, VREF = 4.096 to VDD, VIO = 1.8 V to VDD, all specifications TMIN to TMAX, unless otherwise noted. Table 3. Parameter1 Symbol Min Typ Max Unit Conversion Time: CNV Rising Edge to Data Available t CONV 1.6 µs Acquisition Time t ACQ 400 ns Time Between Conversions t CYC 2 µs CNV Pulse Width t CNVH 10 ns Data Write/Read During Conversion t DATA 1.2 µs SCK Period t SCK t DSDO + 2 ns SCK Low Time t SCKL 11 ns SCK High Time t SCKH 11 ns SCK Falling Edge to Data Remains Valid t HSDO 4 ns SCK Falling Edge to Data Valid Delay t DSDO VIO Above 4.5 V 16 ns VIO Above 3 V 17 ns VIO Above 2.7 V 18 ns VIO Above 2.3 V 21 ns VIO Above 1.8 V 28 ns CNV Low to SDO D15 MSB Valid t EN VIO Above 4.5 V 15 ns VIO Above 3 V 17 ns VIO Above 2.7 V 18 ns VIO Above 2.3 V 22 ns VIO Above 1.8 V 25 ns CNV High or Last SCK Falling Edge to SDO High Impedance t DIS 32 ns CNV Low to SCK Rising Edge t CLSCK 10 ns DIN Valid Setup Time from SCK Falling Edge t SDIN 5 ns DIN Valid Hold Time from SCK Falling Edge t HDIN 5 ns 1 See Figure 2 and Figure 3 for load conditions. IOL 500µA 500µA IOH 1.4V TO SDO CL 50pF Figure 2. Load Circuit for Digital Interface Timing 30% VIO 70% VIO 2V OR VIO – 0.5V1 0.8V OR 0.5V2 0.8V OR 0.5V2 2V OR VIO – 0.5V1 tDELAY tDELAY 1 2V IF VIO ABOVE 2.5V, VIO – 0.5V IF VIO BELOW 2.5V. 2 0.8V IF VIO ABOVE 2.5V, 0.5V IF VIO BELOW 2.5V. Figure 3. Voltage Levels for Timing |
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