S1002 Datasheet, PDF (21/39 Pages) Seiko Instruments Inc – VOLTAGE DETECTOR WITH SENSE PIN

Rev.1.1_00
VOLTAGE DETECTOR WITH SENSE PIN
S-1002 Series
3. Other characteristics
3. 1 Temperature characteristics of detection voltage
The shaded area in Figure 31 shows the temperature characteristics of detection voltage in the operation
temperature range.
−V_DET [V]
+0.945 mV/°C
−V_DET25^*1
−0.945 mV/°C
−40
+25
+85
Ta [°C]
*1. −V_DET25 is a detection voltage value at Ta = +25°C.
Figure 31 Temperature Characteristics of Detection Voltage (Example for −V_DET = 2.7 V)
3. 2 Temperature characteristics of release voltage
The temperature change
Δ+V_DET
ΔTa
of the release voltage is calculated by using the temperature change
Δ−V_DET
ΔTa
of the detection voltage as follows:
Δ+V_DET
ΔTa
=
+V_DET
−V_DET
×
Δ−V_DET
ΔTa
The temperature change of the release voltage and the detection voltage has the same sign consequently.
3. 3 Temperature characteristics of hysteresis voltage
The temperature change of the hysteresis voltage is expressed as
Δ+V_DET
ΔTa
−
Δ−V_DET
ΔTa
and is calculated as
follows:
Δ+V_DET
ΔTa
−
Δ−V_DET
ΔTa
=
V_HYS
−V_DET
×
Δ−V_DET
ΔTa
Seiko Instruments Inc.
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