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AD7819YRZ Arkusz danych(PDF) 3 Page - Analog Devices |
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AD7819YRZ Arkusz danych(HTML) 3 Page - Analog Devices |
3 / 11 page REV. B AD7819 –3– TIMING CHARACTERISTICS1, 2 Parameter V DD = 3 V 10% V DD = 5 V 10% Unit Conditions/Comments tPOWER-UP 1.5 1.5 µs (max) Power-Up Time of AD7819 after Rising Edge of CONVST. t1 4.5 4.5 µs (max) Conversion Time. t2 30 30 ns (min) CONVST Pulsewidth. t3 30 30 ns (max) CONVST Falling Edge to BUSY Rising Edge Delay. t4 0 0 ns (min) CS to RD Setup Time. t5 0 0 ns (min) CS Hold Time after RD High. t6 3 10 10 ns (max) Data Access Time after RD Low. t7 3, 4 10 10 ns (max) Bus Relinquish Time after RD High. t8 3 100 100 ns (min) Data Bus Relinquish to Falling Edge of CONVST Delay. NOTES 1Sample tested to ensure compliance. 2See Figures 12, 13 and 14. 3These numbers are measured with the load circuit of Figure 1. They are defined as the time required for the o/p to cross 0.8 V or 2.4 V for V DD = 5 V ± 10% and 0.4 V or 2 V for VDD = 3 V ± 10%. 4Derived from the measured time taken by the data outputs to change 0.5 V when loaded with the circuit of Figure 1. The measured number is then extrapolated back to remove the effects of charging or discharging the 50 pF capacitor. This means that the time, t 7, quoted in the Timing Characteristics is the true bus relinquish time of the part and as such is independent of external bus loading capacitances. Specifications subject to change without notice. (–40 C to +125 C, unless otherwise noted) ABSOLUTE MAXIMUM RATINGS * VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V Digital Input Voltage to DGND ( CONVST, RD, CS) . . . . . . . . . . . . . . –0.3 V, V DD + 0.3 V Digital Output Voltage to DGND (BUSY, DB0–DB7) . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V REFIN to AGND . . . . . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V Analog Input . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD + 0.3 V Storage Temperature Range . . . . . . . . . . . . –65 °C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150 °C Plastic DIP Package, Power Dissipation . . . . . . . . . . 450 mW θ JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 105 °C/W Lead Temperature, (Soldering 10 sec) . . . . . . . . . . . . 260 °C SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW θ JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 75 °C/W Lead Temperature, Soldering Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . 215 °C Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . 220 °C SSOP Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 115°C/W Lead Temperature, Soldering Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . 215 °C Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . 220 °C *Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 1.6V 200 A IOL 200 A IOH CL 50pF TO OUTPUT PIN Figure 1. Load Circuit for Digital Output Timing Specifications ORDERING GUIDE Linearity Error Package Package Model (LSB) Description Option AD7819YN ±1 LSB Plastic DIP N-16 AD7819YR ±1 LSB Small Outline IC R-16A AD7819YRU ±1 LSB Thin Shrink Small Outline RU-16 (TSSOP) CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD7819 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE |
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