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AD7937BR 数据表(PDF) 3 Page - Analog Devices |
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AD7937BR 数据表(HTML) 3 Page - Analog Devices |
3 / 8 page AD7937 –3– REV. 0 TIMING CHARACTERISTICS Limit at Limit at TA = –40 C Parameter TA = 25 C to +85 C Unit Test Conditions/Comments t1 10 10 ns min Address Valid to Write Setup Time t2 10 10 ns min Address Valid to Write Hold Time t3 20 40 ns min Data Setup Time t4 30 30 ns min Data Hold Time t5 0 0 ns min Chip Select or Update to Write Setup Time t6 0 0 ns min Chip Select or Update to Write Hold Time t7 115 125 ns min Write Pulsewidth t8 90 100 ns min Clear Pulsewidth Specifications subject to change without notice. ABSOLUTE MAXIMUM RATINGS * (TA = 25 °C unless otherwise noted) VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +17 V VREFA, VREFB to AGNDA, AGNDB . . . . . . . . . . . . . . . . ±25 V VRFBA, VRFBB to AGNDA, AGNDB . . . . . . . . . . . . . . . . ±25 V Digital Input Voltage to DGND . . . . . . . –0.3 V, VDD +0.3 V IOUTA, IOUTB to DGND . . . . . . . . . . . . . . –0.3 V, VDD +0.3 V AGNDA, AGNDB to DGND . . . . . . . . . –0.3 V, VDD +0.3 V SOIC Package θ JA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . 72 °C/W Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . 300 °C IR Ref Low Peak Temperature . . . . . . . . . . . . . . . . . . 220 °C Operating Temperature Range Industrial (A, B Versions) . . . . . . . . . . . . . –40 °C to +85°C Storage Temperature . . . . . . . . . . . . . . . . –65 °C to +150°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 indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. t1 t5 t6 t2 t3 t4 t7 t8 5V 0V 5V 0V 5V 0V 5V 0V 5V 0V A0–A1 DATA CS, UPD WR CLR NOTES 1. ALL INPUT SIGNAL RISE AND FALL TIMES MEASURED FROM 10% TO 90% OF +5V. tr = tf = 20ns. 2. TIMING MEASUREMENT REFERENCE LEVELS IS VIH + VIL 2 Figure 1. Timing Diagram ORDERING GUIDE Model Temperature Range Relative Accuracy Gain Error Package Description Option AD7937AR –40 °C to +85°C ±1 LSB ±6 LSB Small Outline R-24 AD7937BR –40 °C to +85°C ±1/2 LSB ±3 LSB Small Outline R-24 (VDD = 5 V 10%, VREFA = VREFB = 10 V; IOUTA = AGNDA = 0 V, IOUTB = AGNDB = 0 V.) 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 AD7937 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 |
类似零件编号 - AD7937BR |
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类似说明 - AD7937BR |
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