S1000 Datasheet, PDF (14/38 Pages) Seiko Instruments Inc – ULTRA-SMALL PACKAGE HIGH-PRECISION

ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.3.1_00
(1) (2) (3) (4)
B
Hysteresis width (VHYS)
A
(5)
VDD
Release voltage (+VDET)
Detection voltage (−VDET)
Minimum operating voltage
VSS
VDD
VSS
Output from the OUT pin
Figure 15 Operation 2
2. Other characteristics
2. 1 Temperature characteristics of detection voltage
The shaded area in Figure 16 shows the temperature characteristics of the detection voltage.
−V_DET [V]
+0.945 mV/°C
−V_DET25^*1
−0.945 mV/°C
−40
25
85
Ta [°C]
*1. −V_DET25 is an actual detection voltage value at 25°C.
Figure 16 Temperature characteristics of detection voltage ( Example for −V_DET = 2.7 V)
2. 2 Temperature characteristics of release voltage
The temperature change ^{Δ + VDET} of the release voltage is calculated by the temperature change ^{Δ − VDET} of the
ΔTa
ΔTa
detection voltage as follows:
Δ
+ VDET
ΔTa
=
+ VDET
− VDET
×
Δ
− VDET
ΔTa
The temperature changes of the release voltage and the detection voltage have the same sign consequently.
14
Seiko Instruments Inc.