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ADC108S102CIMTX Arkusz danych(PDF) 5 Page - National Semiconductor (TI) |
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ADC108S102CIMTX Arkusz danych(HTML) 5 Page - National Semiconductor (TI) |
5 / 17 page ADC108S102 Timing Specifications The following specifications apply for V A =VD = +2.7V to +5.25V, AGND = DGND = 0V, fSCLK = 8 MHz to 16 MHz, fSAMPLE = 500 kSPS to 1 MSPS, and C L = 50pF. Boldface limits apply for TA =TMIN to TMAX: all other limits TA = 25˚C. Symbol Parameter Conditions Typical Limits (Note 7) Units t CSH CS Hold Time after SCLK Rising Edge (Note 9) 0 10 ns (min) t CSS CS Setup Time prior to SCLK Rising Edge (Note 9) 5 10 ns (min) t EN CS Falling Edge to DOUT enabled 5 30 ns (max) t DACC DOUT Access Time after SCLK Falling Edge 17 27 ns (max) t DHLD DOUT Hold Time after SCLK Falling Edge 4 ns (typ) t DS DIN Setup Time prior to SCLK Rising Edge 3 10 ns (min) t DH DIN Hold Time after SCLK Rising Edge 3 10 ns (min) t CH SCLK High Time 0.4 x t SCLK ns (min) t CL SCLK Low Time 0.4 x t SCLK ns (min) t DIS CS Rising Edge to DOUT High-Impedance DOUT falling 2.4 20 ns (max) DOUT rising 0.9 20 ns (max) Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 2: All voltages are measured with respect to GND = 0V, unless otherwise specified. Note 3: When the input voltage at any pin exceeds the power supplies (that is, VIN < AGND or VIN > VA or VD), the current at that pin should be limited to 10 mA. The 20 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 10 mA to two. Note 4: The absolute maximum junction temperature (TJmax) for this device is 150˚C. The maximum allowable power dissipation is dictated by TJmax, the junction-to-ambient thermal resistance ( θJA), and the ambient temperature (TA), and can be calculated using the formula PDMAX=(TJmax − TA)/θJA. In the 16-pin TSSOP, θJA is 96˚C/W, so PDMAX = 1,200 mW at 25˚C and 625 mW at the maximum operating ambient temperature of 105˚C. Note that the power consumption of this device under normal operation is a maximum of 12 mW. The values for maximum power dissipation listed above will be reached only when the ADC108S102 is operated in a severe fault condition (e.g. when input or output pins are driven beyond the power supply voltages, or the power supply polarity is reversed). Obviously, such conditions should always be avoided. Note 5: Human body model is 100 pF capacitor discharged through a 1.5 k Ω resistor. Machine model is 220 pF discharged through ZERO ohms Note 6: Reflow temperature profiles are different for lead-free packages. Note 7: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Note 8: Data sheet min/max specification limits are guaranteed by design, test, or statistical analysis. Note 9: Clock may be in any state (high or low) when CS goes high. Setup and hold restrictions apply only to CS going low. www.national.com 5 |
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