S-808XXC Datasheet, PDF (24/58 Pages) Seiko Instruments Inc – SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR

SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-808xxC Series
Rev.4.3_00
2-3. Temperature Characteristics of Hysteresis Voltage
The temperature characteristics for the hysteresis voltage is expressed as ^{∆ + VDET} − ^{∆ − VDET} and is
∆Ta
∆Ta
calculated as follows:
∆ + VDET _− ∆ − VDET ₌ VHYS _× ∆ − VDET
∆Ta
∆Ta
− VDET ∆Ta
„ Standard Circuit
VDD
OUT
VSS
R^*1
100 kΩ
*1. R is unnecessary for CMOS output products.
Figure 20
Caution The above connection diagram and constants do not guarantee correct operation. Perform
sufficient evaluation using the actual application to set the constants.
„ Technical Terms
1. Detection Voltage (−V_DET), Release Voltage (+V_DET)
The detection voltage (−V_DET) is a voltage at which the output turns to low. The detection voltage varies slightly
among products of the same specification. The variation of detection voltage between the specified minimum
(−V_DET) Min. and the maximum (−V_DET) Max. is called the detection voltage range (Refer to Figure 21).
Example: For the S-80815CN, the detection voltage lies in the range of 1.470≤(−V_DET)≤1.530.
This means that some S-80815CNs have 1.470 V for −V_DET and some have 1.530 V.
The release voltage (+V_DET) is a voltage at which the output turns to high. The release voltage varies slightly
among products of the same specification. The variation of release voltages between the specified
minimum (+V_DET) Min. and the maximum (+V_DET) Max. is called the release voltage range (Refer to Figure
22). The range is calculed from the actual detection voltage (−V_DET) of a product and is expressed by
−V_DET×1.03≤+V_DET≤−V_DET ×1.08.
Example: For the S-80815CN, the release voltage lies in the range of 1.514≤(+V_DET)≤1.652.
This means that some S-80815CNs have 1.514 V for +V_DET and some have 1.652 V.
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Seiko Instruments Inc.