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TMCS1101 bảng dữ liệu(PDF) 16 Page - Texas Instruments

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tên linh kiện TMCS1101
Giải thích chi tiết về linh kiện  TMCS1101 1.5% Precision, Basic Isolation Hall-Effect Current Sensor With 짹600-V Working Voltage
PDF  48 Pages
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nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
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TMCS1101 bảng dữ liệu(HTML) 16 Page - Texas Instruments

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S
PSRR
IN
PSRR * (V
5)
S
e
(%)
I
NL
NL
FS
V
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100% *
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OS
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OS
OE
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OE
OUT,0A
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V
V
V * 0.1
16
TMCS1101
SBOS825A – SEPTEMBER 2019 – REVISED MAY 2020
www.ti.com
Product Folder Links: TMCS1101
Submit Documentation Feedback
Copyright © 2019–2020, Texas Instruments Incorporated
Accuracy Parameters (continued)
(3)
where
•
VOUT,0A is the device output voltage with zero input current.
(4)
The offset error includes errors in the internal reference, the magnetic offset of the Hall sensor and any offset
voltage errors of the signal chain.
The input referred (RTI) offset error is the output voltage offset error divided by the sensitivity of the device,
shown in Equation 5. Refer the offset error to the input of the device to allow for easier total error calculations
and direct comparison to input current levels. No matter how the calculations are done, the error sources
quantified by VOE and IOS are the same, and should only be included once for error calculations.
(5)
Offset error drift is the change in the input-referred offset error per degree Celsius change in ambient
temperature. This parameter is reported in µA/°C. To convert offset drift to an absolute offset for a given change
in temperature, multiply the drift by the change in temperature and convert to percentage, as in Equation 6.
where
•
IOS,drift is the specified input-referred device offset drift.
•
ΔT is the temperature range from 25°C.
(6)
8.1.3 Nonlinearity Error
Nonlinearity is the deviation of the output voltage from a linear relationship to the input current. Nonlinearity
voltage, as shown in Figure 21, is the maximum voltage deviation from the best-fit line based on measured
parameters, calculated by Equation 7.
VNL = VOUT,MEAS – (IMEAS × Sfit + VOUT,0A)
where
•
VOUT,MEAS is the voltage output at maximum deviation from best fit.
•
IMEAS is the input current at maximum deviation from best fit.
•
Sfit is the best-fit sensitivity of the device.
•
VOUT,0A is the device zero current output voltage.
(7)
Nonlinearity error (eNL) for the TMCS1101 is the nonlinearity voltage specified as a percentage of the full-scale
output range (VFS), as shown in Equation 8.
(8)
8.1.4 Power Supply Rejection Ratio
Power supply rejection ratio (PSRR) is the change in device offset due to variation of supply voltage from the
nominal 5 V. The error contribution at the input current of interest can be calculated by Equation 9.
where
•
VS is the operational supply voltage.
•
S is the device senstivity.
(9)



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