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S-1000C25-I4T1G Datasheet(PDF) 15 Page - Seiko Instruments Inc |
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S-1000C25-I4T1G Datasheet(HTML) 15 Page - Seiko Instruments Inc |
15 / 38 page ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR Rev.2.3_00 S-1000 Series Seiko Instruments Inc. 15 2. 3 Temperature characteristics of hysteresis voltage The temperature changes of the hysteresis voltage is expressed as Ta V Ta V DET DET ∆ − ∆ − ∆ + ∆ and is calculated as follows: Ta V V V Ta V Ta V DET DET HYS DET DET ∆ − ∆ × − = ∆ − ∆ − ∆ + ∆ Standard Circuit VDD OUT VSS R* 1 100 k Ω *1. R is unnecessary for CMOS output products. Figure 17 Caution The above connection diagram and constants do not guarantee correct operation. Perform sufficient evaluation using the actual application to set the constants. Explanation of Terms 1. Detection voltage ( −VDET), release voltage (+VDET) The detection voltage ( −VDET) is a voltage at which the output 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 18). Example: For the S-1000C15, the detection voltage lies in the range of 1.485 ≤ (−VDET) ≤ 1.515. This means that some S-1000C15s have 1.485 V for −VDET and some have 1.515 V. The release voltage is a voltage at which the output turns to “H”. The release voltage varies slightly among products of the same specification. The variation of release voltages between the specified minimum ( +VDET) Min. and the maximum ( +VDET) Max. is called the release voltage range (Refer to Figure 19). The range is calculed from the actual detection voltage ( −VDET) of a product and is expressed by −VDET × 1.03 ≤ +VDET ≤ −VDET × 1.07. Example: For the S-1000C15, the release voltage lies in the range of 1.530 ≤ (+VDET) ≤ 1.621. This means that some S-1000C15s have 1.530 V for +VDET and some have 1.621 V. |
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