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AD7521JN Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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AD7521JN Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 14 page Electrical Characteristics (Va e 15V VREF e 10000V TA e 25 C unless otherwise specified) (Continued) DAC1020 DAC1021 DAC1220 DAC1222 Parameter Conditions DAC1022 Units Min Typ Max Min Typ Max Digital Input (Figure 1) Low Threshold TMINkTAkTMAX 08 08 V High Threshold TMINkTAkTMAX 24 24 V Digital Input Current TMINsTAsTMAX Digital Input High 1 100 1 100 m A Digital Input Low b 50 b 200 b 50 b 200 m A Supply Current All Digital Inputs High 02 16 02 16 mA All Digital Inputs Low 06 2 06 2 mA Operating Power Supply (Figures 1 and 2) 5 15 5 15 V Range Note 1 VREFeg10V and VREFeg1V A linearity error temperature coefficient of 00002% FS for a 45 C rise only guarantees 0009% maximum change in linearity error For instance if the linearity error at 25 C is 0045% FS it could increase to 0054% at 70 C and the DAC will be no longer a 10-bit part Note however that the linearity error is specified over the device full temperature range which is a more stringent specification since it includes the linearity error temperature coefficient Note 2 Using internal feedback resistor as shown in Figure 3 Note 3 Both IOUT 1 and IOUT 2 must go to ground or the virtual ground of an operational amplifier If VREFe10V every millivolt offset between IOUT 1 or IOUT 2 0005% linearity error will be introduced Note 4 Human body model 100 pF discharged through a 15 kX resistor Note 5 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur DC and AC electrical specifications do not apply when operating the device beyond its specified operating conditions Note 6 The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX iJA and the ambient temepature TA The maximum allowable power dissipation at any temperature is PD e (TJMAX b TA) iJA or the number given in the Absolute Maximum Ratings whichever is lower For this device TJMAX e 125 C and the typical junction-to-ambient thermal resistance of the J18 package when board mounted is 85 CW For the N18 package iJA is 120 CW for the N16 this number is 125 CW and for the V20 this number is 95 CW Typical Performance Characteristics TLH5689 – 2 FIGURE 1 Digital Input Threshold vs Ambient Temperature FIGURE 2 Gain Error Variation vs V a http www nationalcom 3 |
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