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參數資料
| 型號： | ADM809RART-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 電源管理 |
| 英文描述： | RF/Coaxial Connector; RF Coax Type:Triaxial; Contact Termination:Crimp; Impedance:75ohm; Body Style:Straight Plug; RG Cable Type:307A RoHS Compliant: Yes |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | TO-236AB, SOT-23, 3 PIN |
| 文件頁數： | 5/6頁 |
| 文件大小： | 172K |
| 代理商： | ADM809RART-REEL |
ADM809/ADM810
–5–
REV. 0
INTERFACING TO OTHER DEVICES
OUTPUT
The ADM809/ADM810 Series is designed to integrate with as
many devices as possible and therefore has a standard output
dependant 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 maxi-
mum 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, 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 10. Ensuring a Valid RESET Output Down to
V
CC
= 0 V
THE BENEFITS OF A VERY ACCURATE RESET
THRESHOLD
In other microprocessor supervisory circuits, tolerances in sup-
ply 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 ADM809 and
ADM810 series can operate effectively even when there are
large degradations of the supply voltages. Another advantage of
the ADM809 and ADM810 series is its very accurate internal
voltage reference circuit. These benefits combine to produce an
exceptionally 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 (i.e., thermal, attitude and velocity sen-
sors). The ADM809 and ADM810 can easily be integrated into
existing interrupt-handling circuits (Figure 11) or used as a
stand-alone device.
PRIORITY ENCODER
74LS147
4 LINE BCD
TO
μ
P
V
CC
ADM809
GND
RESET
OTHER SENSING
DEVICES
V
CC
Figure 11. Interfacing to
μ
Ps with Multiple Interrupts
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADM809RART-REEL7 | 功能描述:IC SUPERVSR PUSHPULL 2.63V SOT23 RoHS:否 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:400 系列:- 類型:備用電池電路 監視電壓數目:1 輸出:開路漏極，推挽式 復位:高有效/低有效 復位超時:最小為 35 ms 電壓 - 閥值:4.65V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR |
| ADM809RART-REEL-7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Microprocessor Supervisory Circuit in 3-Pin SOT-23 |
| ADM809RARTZ-REEL | 功能描述:IC SUPERVISOR MPU 2.63V SOT23 RoHS:是 類別:集成電路 (IC) >> PMIC - 監控器 系列:- 標準包裝:400 系列:- 類型:備用電池電路 監視電壓數目:1 輸出:開路漏極，推挽式 復位:高有效/低有效 復位超時:最小為 35 ms 電壓 - 閥值:4.65V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC W 包裝:帶卷 (TR) 其它名稱:ADM691ARZ-REEL7TR |
| ADM809RARTZ-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 |
| ADM809RARTZ-REEL7 | 功能描述:IC SUPERVISOR MPU 2.63V SOT23 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) |
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