ADM705ARZ Analog Devices Inc, ADM705ARZ Datasheet
ADM705ARZ
Manufacturer Part Number
ADM705ARZ
Description
IC SUPERVISOR MPU 4.65 WD 8SOIC
Manufacturer
Analog Devices Inc
Type
Simple Reset/Power-On Resetr
Specifications of ADM705ARZ
Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
160 ms Minimum
Voltage - Threshold
4.65V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Threshold Voltage
4.65V
No. Of Supervisors / Monitors
1
Supply Voltage Range
1V To 5.5V
Reset Type
Active-Low
Supply Current
190µA
Delay Time
200ms
Digital Ic Case Style
SOIC
Current, Output
20 mA
Current, Supply
190 μA
Package Type
SOIC-8
Power Dissipation
470 mW
Temperature, Operating, Range
-40 to +85 °C
Voltage, Supply
5.5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADM705ARZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADM705ARZ-REEL
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADM705ARZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
Guaranteed RESET valid with V
190 μA quiescent current
Precision supply voltage monitor
200 ms reset pulse width
Debounced TTL/CMOS manual reset input (MR)
Independent watchdog timer (ADM705/ADM706)
1.60 sec timeout (ADM705/ADM706)
Active high reset output (ADM707/ADM708)
Voltage monitor for power-fail or low battery warning
Superior upgrade for MAX705 to MAX708
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Critical microprocessor supply monitoring
GENERAL DESCRIPTION
The ADM705/ADM706/ADM707/ADM708 microprocessor
supervisory circuits are suitable for monitoring 5 V power
supplies/batteries and can also monitor microprocessor activity.
The ADM705/ADM706 provide power-supply monitoring
circuitry that generate a reset output during power-up, power-
down, and brownout conditions. The reset output remains
operational with V
monitoring circuitry is also provided. This is activated if the
watchdog input has not been toggled within 1.60 seconds.
In addition, there is a 1.25 V threshold detector to warn of
power-failures, to detect low battery conditions, or to monitor an
additional power supply. An active low, debounced manual reset
input ( MR ) is also included.
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
4.65 V (ADM705/ADM707)
4.40 V (ADM706/ADM708)
CC
as low as 1 V. Independent watchdog
CC
= 1 V
ADM705/ADM706/ADM707/ADM708
The ADM705 and ADM706 are identical except for the reset
threshold monitor levels, which are 4.65 V and 4.40 V, respectively.
The ADM707 and ADM708 provide a similar functionality to
the ADM705 and ADM706 and only differ in that a watchdog
timer function is not available. Instead, an active high reset
output (RESET) is available as well as the active low reset output
( RESET ). The ADM707 and ADM708 are identical except for
the reset threshold monitor levels, which are 4.65 V and 4.40 V,
respectively.
All parts are available in narrow 8-lead PDIP and 8-lead SOIC
packages.
POWER-FAIL
POWER-FAIL
WATCHDOG
INPUT (WDI)
INPUT (PFI)
INPUT (PFI)
V
V
MR
MR
CC
CC
* VOLTAGE REFERENCE = 4.65V (ADM705), 4.40V (ADM706)
* VOLTAGE REFERENCE = 4.65V (ADM707), 4.40V (ADM708)
Low Cost Microprocessor
FUNCTIONAL BLOCK DIAGRAMS
4.65V*
1.25V
4.65V*
1.25V
WATCHDOG
TRANSITION
V
DETECTOR
V
CC
CC
250μA
250μA
Supervisory Circuits
Figure 1. ADM705/ADM706
Figure 2. ADM707/ADM708
©2008 Analog Devices, Inc. All rights reserved.
GENERATOR
GENERATOR
WATCHDOG
RESET AND
ADM705/
ADM706
WATCHDOG
TIMEBASE
RESET
RESET
ADM707/
ADM708
TIMER
WATCHDOG
OUTPUT (WDO)
RESET
POWER-FAIL
OUTPUT (PFO)
RESET
RESET
POWER-FAIL
OUTPUT (PFO)
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ADM705ARZ Summary of contents
Page 1
FEATURES Guaranteed RESET valid with 190 μA quiescent current Precision supply voltage monitor 4.65 V (ADM705/ADM707) 4.40 V (ADM706/ADM708) 200 ms reset pulse width Debounced TTL/CMOS manual reset input (MR) Independent watchdog timer (ADM705/ADM706) 1.60 ...
Page 2
SPECIFICATIONS MIN MAX Table 1. Parameter POWER SUPPLY V Operating Voltage Range CC Supply Current LOGIC OUTPUT Reset Threshold Reset Threshold Hysteresis RESET PULSE WIDTH RESET ...
Page 3
ADM705/ADM706/ADM707/ADM708 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 2. Parameter V CC All Other Inputs Input Current V CC GND Digital Output Current Power Dissipation, N-8 PDIP θ Thermal Impedance JA Power Dissipation, R-8 SOIC θ ...
Page 4
OUTLINE DIMENSIONS 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 4.00 (0.1574) 5.80 (0.2284) 3.80 (0.1497 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 0.25 (0.0098) 0.10 ...
Page 5
... ADM705AR–REEL7 −40°C to +85°C 1 ADM705ARZ −40°C to +85°C 1 ADM705ARZ–REEL −40°C to +85°C 1 ADM705ARZ–REEL7 −40°C to +85°C ADM706AN −40°C to +85°C 1 ADM706ANZ −40°C to +85°C ADM706AR −40°C to +85°C ADM706AR-REEL − ...