參數(shù)資料
型號(hào)： ADM809RART-REEL-7
廠商： ANALOG DEVICES INC
元件分類： 電源管理
英文描述： RF/Coaxial Connector Adapter; RF Coax Type:TNC; Body Style:Straight Adapter, Jack-Jack RoHS Compliant: Yes
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3
封裝： SOT-23, 3 PIN
文件頁(yè)數(shù)： 1/6頁(yè)
文件大?。?/td> 172K
代理商： ADM809RART-REEL-7
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
ADM809/ADM810
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
Microprocessor
Supervisory Circuit in 3-Pin SOT-23
FUNCTIONAL BLOCK DIAGRAM
V
REF
V
CC
RESET
GENERATOR
240ms
ADM809/ADM810
RESET
(RESET)
GND
FEATURES
Superior Upgrade for MAX809/MAX810
Specified Over Temperature
Low Power Consumption (17
m
A)
Precision Voltage Monitor: +3 V, +3.3 V, +5 V Options
Reset Assertion Down to 1 V V
CC
140 ms min Power-On Reset
Logic Low
RESET
Output (ADM809)
Logic High RESET Output (ADM810)
APPLICATIONS
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Automotive Systems
GENERAL DESCRIPTION
The ADM809/ADM810 supervisory circuits monitor the
power supply voltage in microprocessor systems. They pro-
vide a reset output during power-up, power-down and
brownout conditions. On power-up, an internal timer holds
reset asserted for 240 ms. This holds the microprocessor in a
reset state until conditions have stabilized. The
RESET
output remains operational with V
CC
as low as 1 V. The
ADM809 provides an active low reset signal (
RESET
) while
the ADM810 provides an active high signal (RESET) output.
Six reset threshold voltage options are available suitable for
monitoring a variety of supply voltages. Refer to Table I.
The reset comparator features built-in glitch immunity,
making it immune to fast transients on V
CC
.
The ADM809/ADM810 consumes only 17
μ
A, making it
suitable for low power portable equipment. It is packaged in
a 3-pin SOT-23 package.
RESET
RESET
INPUT
GND
GND
V
CC
V
CC
μ
P
SYSTEM
ADM809
V
CC
Figure 1. Typical Operating Circuit
相關(guān)PDF資料
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