S1003 datasheet(23/42 Pages) SII

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MANUAL RESET BUILT-IN DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING) HIGH-ACCURACY VOLTAGE DETECTOR

Rev.1.0_00

S-1003 Series

Seiko Instruments Inc.

Explanation of Terms

1. Detection voltage (

−VDET)

The detection voltage is a voltage at which the output in Figure 30 turns to "L". The detection voltage varies slightly

among products of the same specification. The variation of detection voltage between the specified minimum

(

−VDET min.) and the maximum (−VDET max.) is called the detection voltage range (Refer to Figure 28).

Example:

In the S-1003Cx15, the detection voltage is either one in the range of 1.478 V

≤ −VDET ≤ 1.522 V.

This means that some S-1003Cx15 have

−VDET = 1.478 V and some have −VDET = 1.522 V.

2. Release voltage (

+VDET)

The release voltage is a voltage at which the output in Figure 30 turns to "H". The release voltage varies slightly

among products of the same specification. The variation of release voltage between the specified minimum (

+VDET

min.) and the maximum (

+VDET max.) is called the release voltage range (Refer to Figure 29). The range is

calculated from the actual detection voltage (

−VDET) of a product and is in the range of −VDET × 1.03 ≤ +VDET ≤ −VDET

× 1.07.

Example:

For the S-1003Cx15, the release voltage is either one in the range of 1.522 V

≤ +VDET ≤ 1.629 V.

This means that some S-1003Cx15 have

+VDET = 1.522 V and some have +VDET = 1.629 V.

Detection voltage

range

VDD

−VDET min.

−VDET max.

OUT

Release voltage

VDD

+VDET min.

+VDET max.

OUT

Release voltage

range

Figure 28 Detection Voltage

Figure 29 Release Voltage

VDD

VSS

OUT

100 k

*1.

R is unnecessary for CMOS output product.

*2.

Set to VDD or GND (MR pin non-active).

Figure 30 Test Circuit of Detection Voltage and Release Voltage

S1003 Datasheet(PDF) 23 Page - Seiko Instruments Inc

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