參數(shù)資料
型號(hào)： LT6660HCDC-10#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 10 V, PSSO3
封裝： 2 X 2 MM, 0.75 MM, LEAD FREE, PLASTIC, MO-229W-TBD, DFN-3
文件頁(yè)數(shù)： 2/12頁(yè)
文件大?。?/td> 400K
代理商： LT6660HCDC-10#PBF
LT6660
10
6660fa
Output Accuracy
Like all references, either series or shunt, the error budget
of the LT6660s is made up of primarily three components:
initialaccuracy,temperaturecoefcientandloadregulation.
Lineregulationisneglectedbecauseittypicallycontributes
only 150ppm/V. The LT6660s typically shift 0.02% when
soldered into a PCB, so this is also neglected. The output
errors are calculated as follows for a 100A load and 0°C
to 70°C temperature range:
LT6660HCDC
Initial Accuracy = 0.2%
For IOUT = 100A
ΔVOUT = (4000ppm/mA)(0.1mA) = 0.04%
For Temperature 0°C to 70°C the maximum ΔT = 70°C
ΔVOUT = (20ppm/°C)(70°C) = 0.14%
Total worst-case output error is:
0.2% + 0.04% + 0.14% = 0.380%
Table 2 gives the worst-case accuracy for LT6660HC,
LT6660JC and LT6660KC from 0°C to 70°C, and shows
that if the LT6660HC is used as a reference instead of a
regulator, it is capable of 8 bits of absolute accuracy over
temperature without a system calibration.
Table 2. Worst-Case Output Accuracy over Temperature
IOUT
LT6660HCDC
LT6660JCDC
LT6660KCDC
0A
0.340%
0.540%
0.850%
100A
0.380%
0.580%
0.890%
10mA
0.640%
0.840%
1.15%
20mA
0.540%
0.740%
1.05%
APPLICATIO S I FOR ATIO
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