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AD7248ABN Arkusz danych(PDF) 3 Page - Analog Devices |
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AD7248ABN Arkusz danych(HTML) 3 Page - Analog Devices |
3 / 16 page AD7245A/AD7248A REV. A –3– SWITCHING CHARACTERISTICS1 (V DD = +12 V to +15 V; 2 V SS = O V or –12 V to –15 V; 2 See Figures 5 and 7.) Parameter A, B Versions T Version Units Conditions t1 @ +25 °C 55 55 ns typ Chip Select Pulse Width TMIN to TMAX 80 100 ns min t2 @ +25 °C 40 40 ns typ Write Pulse Width TMIN to TMAX 80 100 ns min t3 @ +25 °C 0 0 ns min Chip Select to Write Setup Time TMIN to TMAX 0 0 ns min t4 @ +25 °C 0 0 ns min Chip Select to Write Hold Time TMIN to TMAX 0 0 ns min t5 @ +25 °C 40 40 ns typ Data Valid to Write Setup Time TMIN to TMAX 80 80 ns min t6 @ +25 °C 10 10 ns min Data Valid to Write Hold Time TMIN to TMAX 10 10 ns min t7 @ +25 °C 40 40 ns typ Load DAC Pulse Width TMIN to TMAX 80 100 ns min t8 (AD7245A only) @ +25 °C 40 40 ns typ Clear Pulse Width TMIN to TMAX 80 100 ns min NOTES 1Sample tested at +25 °C to ensure compliance. 2Power supply tolerance is ± 10% for A Version and ±5% for B and T Versions. ABSOLUTE MAXIMUM RATINGS 1 VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +17 V VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +17 V VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +34 V AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD Digital Input Voltage to DGND . . . . . . . . –0.3 V, VDD +0.3 V VOUT to AGND 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS, VDD VOUT to VSS 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, +24 V VOUT to VDD 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –32 V, 0 V REF OUT 2 to AGND . . . . . . . . . . . . . . . . . . . . . . . . 0 V, V DD Power Dissipation (Any Package) to +75 °C . . . . . . . . 450 mW Derates above +75 °C by . . . . . . . . . . . . . . . . . . . . 6 mW/°C Operating Temperature Commercial (A, B Versions) . . . . . . . . . . . –40 °C to +85°C Extended (S Version) . . . . . . . . . . . . . . . –55 °C to +125°C Storage Temperature . . . . . . . . . . . . . . . . . . –65 °C to +150°C Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300 °C NOTES 1Stresses above those listed under “Absolute Maximum Ratings” may cause per- manent damage to the device. This is a stress rating only and functional opera- tion 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. 2The output may be shorted to voltages in this range provided the power dissipa- tion of the package is not exceeded. VOUT short circuit current is typically 80 mA. WARNING! ESD SENSITIVE DEVICE 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 AD7245A/AD7248A 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 function- ality. |
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