Datasheet LT1021 (Analog Devices) - 4

ManufacturerAnalog Devices
DescriptionPrecision Reference
Pages / Page16 / 4 — ELECTRICAL CH. ARA TERISTICS The. denotes specifications that apply over …
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ELECTRICAL CH. ARA TERISTICS The. denotes specifications that apply over the full operating temperature

ELECTRICAL CH ARA TERISTICS The denotes specifications that apply over the full operating temperature

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LT1021
ELECTRICAL CH C ARA TERISTICS The

denotes specifications that apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN = 15V, IOUT = 0, unless otherwise noted. LT1021-10 PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage (Note 2) LT1021C-10 9.995 10.00 10.005 V LT1021B-10/LT1021D-10 9.950 10.00 10.050 V Output Voltage Temperature Coefficient (Note 3) TMIN ≤ TJ ≤ TMAX LT1021B-10 ● 2 5 ppm/°C LT1021C-10/LT1021D-10 ● 5 20 ppm/°C Line Regulation (Note 4) 11.5V ≤ VIN ≤ 14.5V 1.0 4 ppm/V ● 6 ppm/V 14.5V ≤ VIN ≤ 40V 0.5 2 ppm/V ● 4 ppm/V Load Regulation (Sourcing Current) 0 ≤ IOUT ≤ 10mA 12 25 ppm/mA (Note 4) ● 40 ppm/mA Load Regulation (Shunt Mode) 1.7mA ≤ ISHUNT ≤ 10mA 50 100 ppm/mA (Notes 4, 5) ● 150 ppm/mA Supply Current (Series Mode) 1.2 1.7 mA ● 2.0 mA Minimum Current (Shunt Mode) VIN is Open 1.1 1.5 mA ● 1.7 mA Output Voltage Noise (Note 6) 0.1Hz ≤ f ≤ 10Hz 6.0 µVP-P 10Hz ≤ f ≤ 1kHz 3.5 6 µVRMS Long Term Stability of Output Voltage (Note 7) ∆t = 1000Hrs Noncumulative 15 ppm Temperature Hysteresis of Output ∆T = ±25°C 5 ppm
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 5:
Shunt mode regulation is measured with the input open. With the of a device may be impaired. input connected, shunt mode current can be reduced to 0mA. Load
Note 2:
Output voltage is measured immediately after turn-on. Changes regulation will remain the same. due to chip warm-up are typically less than 0.005%.
Note 6:
RMS noise is measured with a 2-pole highpass filter at 10Hz and a
Note 3:
Temperature coefficient is measured by dividing the change in 2-pole lowpass filter at 1kHz. The resulting output is full-wave rectified and output voltage over the temperature range by the change in temperature. then integrated for a fixed period, making the final reading an average as Separate tests are done for hot and cold; T opposed to RMS. Correction factors are used to convert from average to MIN to 25°C and 25°C to TMAX.
Incremental slope is also measured at 25
°
C.
RMS and correct for the non-ideal bandpass of the filters.
Note 4:
Line and load regulation are measured on a pulse basis. Output Peak-to-peak noise is measured with a single highpass filter at 0.1Hz and a changes due to die temperature change must be taken into account 2-pole lowpass filter at 10Hz. The unit is enclosed in a still-air environment separately. Package thermal resistance is 150°C/W for TO-5 (H), 130°C/W to eliminate thermocouple effects on the leads. Test time is 10 seconds. for N and 150°C/W for the SO-8.
Note 7:
Consult factory for units with long term stability data. 1021fc 4
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