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參數資料
| 型號： | S-80721 |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | 2.1 V±2.4% Adjustment-Free High-Precision Voltage Detector(檢測范圍2.1 V±2.4%，高精度電壓檢測器) |
| 中文描述： | 2.1 V ± 2.4％免調整高精度電壓檢測器（檢測范圍2.1 V ± 2.4％，高精度電壓檢測器） |
| 文件頁數： | 27/42頁 |
| 文件大?。?/td> | 324K |
| 代理商： | S-80721 |
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HIGH-PRECISION VOLTAGE DETECTOR
S-807 Series
26
Seiko Instruments Inc.
Operation
1. Basic operation
(1) When power supply voltage V
DD
is greater than the release voltage +V
DET
, the Nch transistor is OFF and the Pch
transistor ON, causing V
DD
(high) to appear at the output. With the Nch transistor of Figure 13 (a) off, the comparator
input voltage is (RB+RC)/(RA+RB+RC)
×
V
DD
.
(2) When power supply voltage V
DD
goes below +V
DET
, the output continues to maintain the power supply voltage level, as
long as V
DD
remains above the detection voltage -V
DET
. When V
DD
does fall below -V
DET
(A in Figure 14), the Nch
transistor goes ON, the Pch transistor goes OFF, and V
SS
appears at the output. With the Nch transistor of Figure 13
(a) ON, the comparator input voltage is RB/(RA+RB)
×
V
DD
.
(3) When V
DD
falls below the minimum operating voltage, the output becomes undefined. However, output will revert to V
DD
if a pull-up has been employed.
(4) V
SS
will again be output when V
DD
rises above the minimum operating voltage. V
SS
will continue to be output even when
V
DD
surpasses -V
DET
, as long as it does not exceed the release voltage +V
DET
.
(5) When V
DD
rises above +V
DET
(B in Figure 14), the Nch transistor goes OFF, the Pch transistor goes ON, and V
DD
appears at the output.
V
DD
RB
V
SS
V
REF
RC
RA
(a)
-
+
OUT
Pch
Nch
*
Hysteresis
width
(V
HYS
)
A
B
V
DD
V
SS
Comparator
output
OUT
V
DD
V
SS
(1)
(2)
(3)
(5)
(4)
Figure 14
Figure 13
Minimum operating
voltage
Release voltage(+V
DET
)
Detection voltage(-V
DET
)
* Parasitic diode
相關PDF資料 |
PDF描述 |
|---|---|
| S-80722 | 2.2 V±2.4% Adjustment-Free High-Precision Voltage Detector(檢測范圍2.2 V±2.4%，高精度電壓檢測器) |
| S-80723 | 2.3 V±2.4% Adjustment-Free High-Precision Voltage Detector(檢測范圍2.3 V±2.4%，高精度電壓檢測器) |
| S-80724 | 2.4 V±2.4% Adjustment-Free High-Precision Voltage Detector(檢測范圍2.4 V±2.4%，高精度電壓檢測器) |
| S-80725 | 2.5 V±2.4% Adjustment-Free High-Precision Voltage Detector(檢測范圍2.5 V±2.4%，高精度電壓檢測器) |
| S-80726 | 2.6 V±2.4% Adjustment-Free High-Precision Voltage Detector(檢測范圍2.6 V±2.4%，高精度電壓檢測器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| S-80721AL | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80721AL-AJ-X | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80721AN | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80721AN-DJ-X | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
| S-80721SL-AJ-X | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH-PRECISION VOLTAGE DETECTOR |
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