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AD7847BR Fiches technique(PDF) 3 Page - Analog Devices |
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AD7847BR Fiches technique(HTML) 3 Page - Analog Devices |
3 / 12 page AD7837/AD7847 REV. C –3– TIMING CHARACTERISTICS1, 2, 3 Limit at TMIN, TMAX Parameter (All Versions) Unit Conditions/Comments t1 0 ns min CS to WR Setup Time t2 0 ns min CS to WR Hold Time t3 30 ns min WR Pulsewidth t4 80 ns min Data Valid to WR Setup Time t5 0 ns min Data Valid to WR Hold Time t6 4 0 ns min Address to WR Setup Time t7 4 0 ns min Address to WR Hold Time t8 4 50 ns min LDAC Pulsewidth NOTES 1All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V. 2See Figures 3 and 5. 3Guaranteed by design and characterization, not production tested. 4AD7837 only. ABSOLUTE MAXIMUM RATINGS * (TA = +25 °C unless otherwise noted) VDD to DGND, AGNDA, AGNDB . . . . . . . –0.3 V to +17 V VSS 1 to DGND, AGNDA, AGNDB . . . . . . . +0.3 V to –17 V VREFA, VREFB to AGNDA, AGNDB . . . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3 V to VDD + 0.3 V AGNDA, AGNDB to DGND . . . . . . . –0.3 V to VDD + 0.3 V VOUTA 2, V OUTB 2 to AGNDA, AGNDB . . . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3 V to VDD + 0.3 V RFBA 3, R FBB 3 to AGNDA, AGNDB . . . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3 V to VDD + 0.3 V Digital Inputs to DGND . . . . . . . . . . . –0.3 V to VDD + 0.3 V Operating Temperature Range Commercial/Industrial (A, B Versions) . . . –40 °C to +85°C Extended (S Version) . . . . . . . . . . . . . . . . –55 °C to +125°C Storage Temperature Range . . . . . . . . . . . . –65 °C to +150°C Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . . 300 °C Power Dissipation (Any Package) to +75 °C . . . . . . 1000 mW Derates above +75 °C by . . . . . . . . . . . . . . . . . . . . 10 mW/°C NOTES 1If V SS is open circuited with VDD and either AGND applied, the V SS pin will float positive, exceeding the Absolute Maximum Ratings. If this possibility exists, a Schottky diode connected between VSS and AGND (cathode to AGND) ensures the Maximum Ratings will be observed. 2The outputs may be shorted to voltages in this range provided the power dissipation of the package is not exceeded. 3AD7837 only. *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 condi- tions for extended periods may affect device reliability. Only one Absolute Maximum Rating may be applied at any one time. ORDERING GUIDE Temperature Relative Package Model 1 Range Accuracy Option 2 AD7837AN –40 °C to +85°C ±1 LSB N-24 AD7837BN –40 °C to +85°C ±1/2 LSB N-24 AD7837AR –40 °C to +85°C ±1 LSB R-24 AD7837BR –40 °C to +85°C ±1/2 LSB R-24 AD7837AQ –40 °C to +85°C ±1 LSB Q-24 AD7837BQ –40 °C to +85°C ±1/2 LSB Q-24 AD7837SQ –55 °C to +125°C ±1 LSB Q-24 AD7847AN –40 °C to +85°C ±1 LSB N-24 AD7847BN –40 °C to +85°C ±1/2 LSB N-24 AD7847AR –40 °C to +85°C ±1 LSB R-24 AD7847BR –40 °C to +85°C ±1/2 LSB R-24 AD7847AQ –40 °C to +85°C ±1 LSB Q-24 AD7847BQ –40 °C to +85°C ±1/2 LSB Q-24 AD7847SQ –55 °C to +125°C ±1 LSB Q-24 NOTES 1To order MIL-STD-883, Class B processed parts, add /883B to part number. 2N = Plastic DIP; 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 these devices feature 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. (VDD = +15 V 5%, VSS = –15 V 5%, AGNDA = AGNDB = DGND = O V) WARNING! ESD SENSITIVE DEVICE |
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