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CQ-330A Datasheet, PDF (9/19 Pages) Asahi Kasei Microsystems – High-Speed Response Coreless Current Sensor
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[CQ-330A]
10.4. Temperature Drift of Sensitivity Vh-d [%] , Temperature Drift of Zero-current output Voltage Vof-d [mV]
Temperature drift of sensitivity is defined as the drift ratio of the sensitivity (Vh) at Ta = Ta1 (–40°C ≤ Ta1 ≤
90°C) to the Vh at Ta = 35°C, and calculated from the formula below:
Vh-d = 100 × (Vh(Ta = Ta1) / Vh(Ta = 35°C) – 1)
Maximum temperature drift of sensitivity (Vh-dmax) is defined as the maximum value of |Vh-d| through the
defined temperature range.
Temperature drift of zero-current output voltage is defined as the drift value between the zero-current
output voltage (Vof) at Ta = Ta1 (–40°C ≤ Ta1 ≤ 90°C) and the Vof at Ta = 35°C, and calculated from the
formula below:
Vof-d = Vof(Ta = Ta1) – Vof(Ta = 35°C)
Maximum temperature drift of zero-current output voltage (Vof-dmax) is defined as the maximum value of
|Vof-d| through the defined temperature range.
Reference data of the temperature drift of sensitivity and zero-current output voltage are shown in Figure 5.
Figure 5. Temperature Drift of Sensitivity and Zero-current output Voltage.
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