ADM709RAR-REEL Analog Devices Inc, ADM709RAR-REEL Datasheet
ADM709RAR-REEL
Manufacturer Part Number
ADM709RAR-REEL
Description
Manufacturer
Analog Devices Inc
Datasheet
1.ADM709RAR-REEL.pdf
(4 pages)
Specifications of ADM709RAR-REEL
Number Of Elements
1
Monitored Voltage 1 (typ)
3/3.3/5V
Battery Backup Switching
No
Watchdog Timer
No
Chip Enable Signals
No
Reset Active Time
380msms
Manual Reset
No
Package Type
SOIC N
Operating Supply Voltage (min)
1V
Operating Supply Voltage (max)
5.5V
Reset Threshold Voltage (max)
2.7V
Reset Threshold Voltage (min)
2.55V
Power Dissipation
470mW
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Power Fail Detection
No
Mounting
Surface Mount
Pin Count
8
Supply Current
0.2mA
Lead Free Status / Rohs Status
Not Compliant
a
GENERAL DESCRIPTION
The ADM709 contains a power supply monitor which generates
a system reset during power-up, power-down and brownout
conditions. When V
goes low and holds the P in reset. On power-up the RESET
output is held low for 140 ms after V
old. The RESET output remains operational with V
as 1 V.
Three supply-voltage threshold levels are available suitable for
+5 V, +3.3 V and for +3 V supply monitoring. The actual reset
voltage threshold is given below.
The ADM709 is available in 8-pin DIP and SOIC packages.
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.
FEATURES
Precision Supply Voltage Monitor
+5 V, +3.3 V, +3 V Power Supply Monitor
35 A Quiescent Current
140 ms (min) Power-On Reset Pulse
Low Cost
8-Pin DIP/SO Packages
Upgrade for MAX709
APPLICATIONS
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Critical P Monitoring
Automotive Systems
Critical P Power Monitoring
Suffix
L
M
T
S
R
Table I. Reset Threshold
CC
falls below the reset threshold, RESET
Voltage (V)
4.65
4.40
3.08
2.93
2.63
CC
rises above the thresh-
CC
as low
Model
ADM709LAN
ADM709RAR
*N = Plastic DIP; SO = SOIC.
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
ADM709LAR
ADM709MAN
ADM709MAR
ADM709TAN
ADM709TAR
ADM709SAN
ADM709SAR
ADM709RAN
V
CC
FUNCTIONAL BLOCK DIAGRAM
V
TH
Typical Operating Circuit
Reset
Threshold
4.65 V
4.65 V
4.40 V
4.40 V
3.08 V
3.08 V
2.93 V
2.93 V
2.63 V
2.63 V
Power Supply Monitor
ADM709
ORDERING GUIDE
GND
V
CC
RESET
ADM709
GND
GENERATOR
Temperature
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
Range
–40 C to +85 C
–40 C to +85 C
RESET
© Analog Devices, Inc., 1995
RESET
with Reset
ADM709
V
GND
µP
CC
Fax: 617/326-8703
RESET
Package
Option*
N-8
SO-8
N-8
SO-8
N-8
SO-8
N-8
SO-8
N-8
SO-8
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ADM709RAR-REEL Summary of contents
Page 1
... Model as low CC ADM709LAN ADM709LAR ADM709MAN ADM709MAR ADM709TAN ADM709TAR ADM709SAN ADM709SAR ADM709RAN Voltage (V) ADM709RAR 4. Plastic DIP SOIC. 4.40 3.08 2.93 2.63 One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Power Supply Monitor with Reset ADM709 FUNCTIONAL BLOCK DIAGRAM ADM709 ...
Page 2
ADM709–SPECIFICATIONS Parameter Min V Operating Voltage Range 1.0 CC 1.2 Supply Current Reset Threshold 4.5 4.25 3.00 2.85 2. RESET Delay CC RESET Active Time-Out Period 140 RESET Output Voltage V CC Specifications subject to change without notice. ...
Page 3
ADM709 V CC RESET GENERATOR V TH GND Figure 1. Functional Block Diagram V CC ADM709 RESET GND Figure 2. Typical Operating Circuit CIRCUIT INFORMATION RESET Output RESET is an active low output which provides a reset signal to the ...
Page 4
ADM709 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic DIP (N- 0.280 (7.11) PIN 1 0.240 (6.10 0.325 (8.25) 0.430 (10.92) 0.300 (7.62) 0.348 (8.84) 0.060 (1.52) 0.210 0.015 (0.38) (5.33) MAX 0.130 0.160 ...