參數(shù)資料
型號: ADM708RAR
廠商: ANALOG DEVICES INC
元件分類: 電源管理
英文描述: +3 V, Voltage Monitoring uP Supervisory Circuits
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: SOIC-8
文件頁數(shù): 1/8頁
文件大小: 129K
代理商: ADM708RAR
FUNCTIONAL BLOCK DIAGRAMS
REV. A
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
+3 V, Voltage Monitoring
m
P Supervisory Circuits
ADM706P/R/S/T, ADM708R/S/T
FEATURES
Precision Supply-Voltage Monitor
+2.63 V (ADM706P/R, ADM708R)
+2.93 V (ADM706S, ADM708S)
+3.08 V (ADM706T, ADM708T)
100
m
A Quiescent Current
200 ms Reset Pulsewidth
Debounced Manual Reset Input (
MR
)
Independent Watchdog Timer—1.6 sec Timeout
(ADM706x)
Reset Output
Active High (ADM706P)
Active Low (ADM706R/S/T)
Both Active High and Active Low (ADM708R/S/T)
Voltage Monitor for Power-Fail or Low Battery Warning
Guaranteed
RESET
Valid with V
CC
= 1 V
Superior Upgrade for MAX706P/R/S/T, MAX708R/S/T
APPLICATIONS
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Critical
m
P Monitoring
Automotive Systems
Battery Operated Systems
Portable Instruments
GENERAL DESCRIPTION
The ADM706P/R/S/T and the ADM708R/S/T microprocessor
supervisory circuits are suitable for monitoring either 3 V or 3.3 V
power supplies.
The ADM706P/R/S/T provide the following functions:
1. Power-supply monitoring circuitry which generates a Reset
output during power-up, power-down and brownout condi-
tions. The reset output remains operational with V
CC
as low
as 1 V.
2. Independent watchdog monitoring circuitry which is acti-
vated if the watchdog input has not been toggled within
1.6 seconds.
3. A 1.25 V threshold detector for power fail warning, low bat-
tery detection, or to monitor an additional power supply.
4. An active low debounced manual reset input (
MR
).
The ADM706R, ADM706S, ADM706T are identical except for
the reset threshold monitor levels which are 2.63 V, 2.93 V, and
3.08 V respectively. The ADM706P is identical to the ADM706R
in that the reset threshold is 2.63 V. It differs only in that it has
an active high reset output.
The ADM708R/S/T provide the same functionality as the
ADM706R/S/T and only differ in that:
1.
A watchdog timer function is not available.
2.
An active high reset output (RESET) in addition to the
active low (
RESET
) output is available.
All parts are available in 8-lead DIP and narrow SOIC packages.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1999
WATCHDOG
TRANSITION
DETECTOR
WATCHDOG
TIMER
1.25V
V
REF
*
WATCHDOG
INPUT (WDI)
POWER FAIL
INPUT (PFI)
POWER FAIL
OUTPUT (
PFO
)
WATCHDOG
OUTPUT(
WDO
)
RESET
,
(P = RESET)
*
VOLTAGE REFERENCE = 2.63V (P/R), 2.93V (S), 3.08V (T)
ADM706
RESET &
WATCHDOG
TIMEBASE
RESET
GENERATOR
MR
V
CC
70
m
A
V
CC
1.25V
V
REF
*
POWER FAIL
INPUT (PFI)
POWER FAIL
OUTPUT (
PFO
)
RESET
*
VOLTAGE REFERENCE = 2.63V (R), 2.93V (S), 3.08V (T)
ADM708
RESET
GENERATOR
MR
V
CC
70
m
A
V
CC
RESET
相關(guān)PDF資料
PDF描述
ADM708SAN +3 V, Voltage Monitoring uP Supervisory Circuits
ADM708SAR +3 V, Voltage Monitoring uP Supervisory Circuits
ADM708T Analog Switch / Multiplexer (Mux) IC; On-Resistance, Rds(on):100ohm; Analog Switch Function:SPST; No. of Channels:4; Leakage Current:1nA; Supply Voltage Max:44V; Package/Case:16-DIP; Leaded Process Compatible:No RoHS Compliant: No
ADM708TAN +3 V, Voltage Monitoring uP Supervisory Circuits
ADM708TAR Analog Switch / Multiplexer (Mux) IC; Analog Switch Function:SPST; Package/Case:16-SOIC; Leaded Process Compatible:No; Leakage Current:1nA; No. of Channels:4; On Resistance, Rds(on):100ohm; Peak Reflow Compatible (260 C):No RoHS Compliant: No
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ADM708S 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V, Voltage Monitoring Microprocessor Supervisory Circuits
ADM708SAN 制造商:Analog Devices 功能描述:Processor Supervisor 2.93V 2.93V 8-Pin PDIP 制造商:Analog Devices 功能描述:PROCESSOR SUPERVISOR 2.93V 350UA 8PDIP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:RESET GENERATOR I.C. - Bulk