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AD1583A Datasheet(PDF) 7 Page - Analog Devices |
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AD1583A Datasheet(HTML) 7 Page - Analog Devices |
7 / 12 page AD1582/AD1583/AD1584/AD1585 –7– REV. D PARAMETER DEFINITIONS Temperature Coefficient (TCVO) The change of output voltage over the operating temperature change and normalized by the output voltage at 25 C, expressed in ppm/ C. The equation follows: TCV VT VT VT T O O2 O 1 O2 1 ppm C C /] ° [ = ()− () ° ()×− () × 25 10 6 where: VO(25 C) = VO at 25 C VO(T1) = VO at temperature 1 VO(T2) = VO at temperature 2 Line Regulation ( ∆V O / ∆V IN) The change in output voltage due to a specified change in input voltage. It includes the effects of self-heating. Line regulation is expressed in either percent per volt, parts per million per volt, or microvolts per volt change in input voltage. Load Regulation ( ∆V O / ∆I LOAD) The change in output voltage due to a specified change in load current. It includes the effects of self-heating. Load regulation is expressed in either microvolts per milliampere, parts per million per milliampere, or Ω of dc output resistance. Long-Term Stability ( ∆V O) Typical shift of output voltage at 25 C on a sample of parts subjected to an operation life test of 1000 hours at 125 C: ∆ ∆ VV t V t V Vt Vt Vt OO 0 O 1 O O0 O1 O0 = ()− () [] = () − () () × ppm 10 6 where: VO(t0) = VO at 25 C at time 0 VO(t1) = VO at 25 C after 1000 hours operation at 125 C Thermal Hysteresis (VO_HYS) The change of output voltage after the device is cycled through temperatures from +25 C to –40 C to +85 °C and back to +25 C. This is a typical value from a sample of parts put through such a cycle: VV V V VV V O_HYS O O_TC O_HYS OO_TC O =° ()− [] = ° ()− ° () × 25 25 25 10 6 C ppm C C where: VO(25 C) = VO at 25 C VO_TC = VO at 25 C after temperature cycle at +25 C to –40 C to +85 C and back to +25 C Operating Temperature The temperature extremes at which the device can still function. Parts may deviate from their specified performance outside the specified temperature range. |
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