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AD1403 데이터 시트보기 (PDF) - Analog Devices

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AD1403 Low Cost, Precision 2.5 V IC References ADI
Analog Devices ADI
AD1403 Datasheet PDF : 4 Pages
1 2 3 4
Typical Performance Curves–AD1403/AD1403A
Figure 3. Typical Change in VOUT vs. VIN
(Normalized to VOUT @ VlN = 15 V @ TC = 25°C)
Figure 6. Change in VOUT vs. Temperature
(Normalized to VOUT @ VIN = 15 V)
Figure 4. Change in Output Voltage vs. Load Current
(Normalized to VOUT @ VIN = 15 V, lOUT = 0 mA)
Figure 5. Quiescent Current vs. Temperature
(VIN = 15 V, IOUT = 0 mA)
Figure 7. Change in VOUT vs. Temperature
(Normalized to VOUT @ VlN = 15 V, IOUT = 0 mA)
VOLTAGE VARIATION VS. TEMPERATURE AND LINE
Some confusion exists in the area of defining and specifying ref-
erence voltage error over temperature. Historically, references
are characterized using a maximum deviation per degree Centi-
grade; i.e., 10 ppm/°C. However, because of the inconsistent
nonlinearities in Zener references (butterfly or “S” type charac-
teristics), most manufacturers use a maximum limit error band
approach to characterize their references. This technique mea-
sures the output voltage at 3 to 5 different temperatures and
guarantees that the output voltage deviation will fall within the
guaranteed error band at these discrete temperatures. This ap-
proach, of course, makes no mention or guarantee of perfor-
mance at any other temperature within the operating
temperature range of the device.
The consistent Voltage vs. Temperature performance of a typi-
cal AD1403 is shown in Figure 6. Note that the characteristic is
quasi-parabolic, not the possible “S” type characteristics of clas-
sical Zener references. This parabolic characteristic permits a
maximum output deviation specification over the device’s full
operating temperature range, rather than just at 3 to 5 discrete
temperatures.
REV. A
–3–
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