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參數資料
型號: ADM803LAKS-REEL-7
廠商: ANALOG DEVICES INC
元件分類: 電源管理
英文描述: Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3
封裝: SC-70, 3 PIN
文件頁數: 7/12頁
文件大小: 132K
代理商: ADM803LAKS-REEL-7
REV. C
ADM803/ADM809/ADM810
–7–
ADM8_L/M/J
400
350
0
1
10
1000
100
300
250
50
200
150
100
ADM8_R/S/T/Z
RESET COMPARATOR OVERDRIVE, V
TH
– V
CC
(mV)
M
TPC 7. Maximum Transient Duration without Causing a
Reset Pulse vs. Reset Comparator Overdrive
INTERFACING TO OTHER DEVICES’ OUTPUT
The ADM803/ADM809/ADM810 series is designed to integrate
with as many devices as possible and, therefore, has a standard
output dependent on V
CC
. This enables the part to be used in
both 3 V and 5 V or any nominal voltage within the minimum
and maximum specifications for V
CC
. Because of this design
approach, interfacing this device to other devices is simplified.
Ensuring a Valid Reset Output Down to V
CC
= 0 V
When V
CC
falls below 0.8 V, the ADM803/ADM809’s
RESET
no longer sinks current. A high impedance CMOS logic input
connected to
RESET
may, therefore, drift to undetermined
logic levels. To eliminate this problem, a 100 k
resistor should
be connected from
RESET
to ground.
V
CC
V
CC
GND
RESET
ADM809
Figure 3. Ensuring a Valid Reset Output Down
to V
CC
= 0 V
Benefits of a Very Accurate Reset Threshold
In other microprocessor supervisory circuits, tolerances in supply
voltages lead to an overall increase in reset tolerance levels due
to the deterioration of the microprocessor reset circuit’s power
supply. The possibility of a malfunction during a power failure is
greatly reduced because the ADM803/ADM809/ADM810 series
can operate effectively even when there are large degradations
of the supply voltages. Another advantage of the ADM803/
ADM809/ADM810 series is its very accurate internal voltage
reference circuit. These benefits combine to produce an excep-
tionally reliable voltage monitor circuit.
Interfacing to Microprocessors with Multiple Interrupts
In a number of cases, it is necessary to interface many interrupts
from different devices (e.g., thermal, altitude, and velocity sensors).
The ADM803/ADM809/ADM810 can easily be integrated into
existing interrupt-handling circuits (Figure 4) or be used as a
standalone device.
PRIORITY ENCODER
74LS147
4-LINE BCD TO
MICROPROCESSOR
V
CC
ADM809
GND
RESET
OTHER SENSING
DEVICES
V
CC
Figure 4. Interfacing to Microprocessors with
Multiple Interrupts
相關PDF資料
PDF描述
ADM803MAKS-REEL Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803MAKS-REEL-7 Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803RAKS-REEL Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803RAKS-REEL-7 Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803SAKS-REEL Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
相關代理商/技術參數
參數描述
ADM803LAKSZ-REEL 功能描述:IC SUPERVISOR MPU 4.63V SC70-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:3,000 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:推挽式,圖騰柱 復位:高有效 復位超時:最小為 100 ms 電壓 - 閥值:3.06V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:SC-70,SOT-323 供應商設備封裝:SC-70-3 包裝:帶卷 (TR) 其它名稱:ADM1817-5AKSREEL7
ADM803LAKSZ-REEL2 制造商:AD 制造商全稱:Analog Devices 功能描述:Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
ADM803LAKSZ-REEL7 功能描述:IC SUPERVISOR MPU 4.63V SC70-3 RoHS:是 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:100 系列:- 類型:簡單復位/加電復位 監視電壓數目:1 輸出:開路漏極,開路漏極 復位:高有效/低有效 復位超時:最小為 250 ms 電壓 - 閥值:4.37V,4.62V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 供應商設備封裝:8-SOIC 包裝:管件 產品目錄頁面:1337 (CN2011-ZH PDF)
ADM803LAKSZ-REEL7 制造商:Analog Devices 功能描述:SUPERVISOR, 24uA, 5.5V, SC-70-3
ADM803LAKSZ-REEL72 制造商:AD 制造商全稱:Analog Devices 功能描述:Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23
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