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AD7845 Datasheet(PDF) 3 Page - Analog Devices |
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AD7845 Datasheet(HTML) 3 Page - Analog Devices |
3 / 12 page AD7845 REV. B –3– Limit at TMIN to TMAX Parameter (All Versions) Units Test Conditions/Comments tCS 30 ns min Chip Select to Write Setup Time tCH 0 ns min Chip Select to Write Hold Time tWR 30 ns min Write Pulsewidth tDS 80 ns min Data Setup Time tDH 0 ns min Data Hold Time NOTES 1Guaranteed by design and characterization, not production tested. Specifications subject to change without notice. TIMING CHARACTERISTICS1 (V DD = +15 V, 5%. VSS = –15 V, 5%. VREF = +10 V. AGND = DGND = O V.) ORDERING GUIDE 1 Relative Temperature Accuracy Package Model 2 Range @ +25 C Option 3 AD7845JN 0 °C to +70°C ±1 LSB N-24 AD7845KN 0 °C to +70°C ±1/2 LSB N-24 AD7845JP 0 °C to +70°C ±1 LSB P-28A AD7845KP 0 °C to +70°C ±1/2 LSB P-28A AD7845JR 0 °C to +70°C ±1 LSB R-24 AD7845KR 0 °C to +70°C ±1/2 LSB R-24 AD7845AQ –40 °C to +85°C ±1 LSB Q-24 AD7845BQ –40 °C to +85°C ±1/2 LSB Q-24 AD7845AR –40 °C to +85°C ±1 LSB R-24 AD7845BR –40 °C to +85°C ±1/2 LSB R-24 AD7845SQ/883B –55 °C to +125°C ±1 LSB Q-24 AD7845TQ/883B –55 °C to +125°C ±1/2 LSB Q-24 AD7845SE/883B –55 °C to +125°C ±1 LSB E-28A NOTES 1Analog Devices reserves the right to ship either ceramic (D-24A) or cerdip (Q-24) hermetic packages. 2To order MIL-STD-883, Class B processed parts, add /883B to part number. 3E = Leadless Ceramic Chip Carrier; N = Plastic DIP; P = Plastic Leaded Chip Carrier; Q = Cerdip; R = SOIC. 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 AD7845 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. Operating Temperature Range Commercial (J, K Versions) . . . . . . . . . . . . . 0 °C to +70°C Industrial (A, B Versions) . . . . . . . . . . . . –40 °C to +85°C Extended (S, T Versions) . . . . . . . . . . . . –55 °C to +125°C Storage Temperature Range . . . . . . . . . . . –65 °C to +150°C Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300 °C NOTES 1Stresses above those listed under Absolute Maximum Ratings may cause permanent 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 of time may affect device reliability. Only one Absolute Maximum Rating may be applied at any one time. 2V OUT may be shorted to AGND provided that the power dissipation of the package is not exceeded. CS WR DATA 5V 0V 5V 0V 5V 0V NOTES 1. ALL INPUT SIGNAL RISE AND FALL TIMES MEASURED FROM 10% TO 90% OF +5V. tR = tF = 20ns. 2. TIMING MEASUREMENT REFERENCE LEVEL IS VIH + VIL 2 tCS tCH tWR tDS tDH Figure 1. AD7845 Timing Diagram ABSOLUTE MAXIMUM RATINGS 1 (TA = +25°C unless otherwise stated) VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +17 V VSS to DGND . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –17 V VREF to AGND . . . . . . . . . . . . . . . . VDD + 0.3 V, VSS – 0.3 V VRFB to AGND . . . . . . . . . . . . . . . . VDD + 0.3 V, VSS – 0.3 V VRA to AGND . . . . . . . . . . . . . . . . . VDD + 0.3 V, VSS – 0.3 V VRB to AGND . . . . . . . . . . . . . . . . . VDD + 0.3 V, VSS – 0.3 V VRC to AGND . . . . . . . . . . . . . . . . . VDD + 0.3 V, VSS – 0.3 V VOUT to AGND 2 . . . . . . . . . . . . . . . VDD + 0.3 V, VSS – 0.3 V AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD Digital Input Voltage to DGND . . . . . –0.3 V to VDD + 0.3 V Power Dissipation (Any Package) To +75 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 mW Derates above +75 °C . . . . . . . . . . . . . . . . . . . . . 10 mW/°C WARNING! ESD SENSITIVE DEVICE |
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Similar Description - AD7845_15 |
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