ADM709LAR-REEL

FUNCTIONAL BLOCK DIAGRAM
V
CC
RESET
ADM709
V
TH
RESET
GENERATOR
GND
RESET
ADM709
GND GND
µP
RESET
V
CC
V
CC
Typical Operating Circuit
ORDERING GUIDE
Reset Temperature Package
Model Threshold Range Option*
ADM709LAN 4.65 V –40°C to +85°C N-8
ADM709LAR 4.65 V –40°C to +85°C SO-8
ADM709MAN 4.40 V –40°C to +85°C N-8
ADM709MAR 4.40 V –40°C to +85°C SO-8
ADM709TAN 3.08 V –40°C to +85°C N-8
ADM709TAR 3.08 V –40°C to +85°C SO-8
ADM709SAN 2.93 V –40°C to +85°C N-8
ADM709SAR 2.93 V –40°C to +85°C SO-8
ADM709RAN 2.63 V –40°C to +85°C N-8
ADM709RAR 2.63 V –40°C to +85°C SO-8
*N = Plastic DIP; SO = SOIC.
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
Power Supply Monitor
with Reset
ADM709
© Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700 Fax: 617/326-8703
GENERAL DESCRIPTION
The ADM709 contains a power supply monitor which generates
a system reset during power-up, power-down and brownout
conditions. When V
CC
falls below the reset threshold, RESET
goes low and holds the µP in reset. On power-up the
RESET
output is held low for 140 ms after V
CC
rises above the thresh-
old. The
RESET output remains operational with V
CC
as low
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.
Table I. Reset Threshold
Suffix Voltage (V)
L 4.65
M 4.40
T 3.08
S 2.93
R 2.63
FEATURES
Precision Supply Voltage Monitor
+5 V, +3.3 V, +3 V Power Supply Monitor
35 mA 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 mP Monitoring
Automotive Systems
Critical mP Power Monitoring
ADM709* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
DOCUMENTATION
Data Sheet
ADM709: Power Supply Monitor with Reset Data Sheet
REFERENCE MATERIALS
Product Selection Guide
Supervisory Devices Complementary Parts Guide for
Altera FPGAs
Supervisory Devices Complementary Parts Guide for
Xilinx FPGAs
Solutions Bulletins & Brochures
Voltage Monitoring Products Applications Guide
DESIGN RESOURCES
ADM709 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
View all ADM709 EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
Submit a technical question or find your regional support
number.
DOCUMENT FEEDBACK
Submit feedback for this data sheet.
This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not
trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.
REV. 0
–2–
(V
CC
= Full Operating Range, T
A
= T
MIN
to T
MAX
unless otherwise noted)
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25°C unless otherwise noted)
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
RESET Output . . . . . . . . . . . . . . . . . . . –0.3 V to V
CC
+ 0.3 V
V
CC
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
RESET Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Power Dissipation, N-8 DIP . . . . . . . . . . . . . . . . . . . . 727 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 135°C/W
Power Dissipation, SO-8 SOIC . . . . . . . . . . . . . . . . . . 470 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 110°C/W
Operating Temperature Range
Industrial ( A Version) . . . . . . . . . . . . . . . . . –40°C to +85°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300°C
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>5 kV
*
Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those listed in the
operational sections of this specification is not implied. Exposure to absolute
maximum ratings for extended periods of time may affect device reliability.
PIN FUNCTION DESCRIPTION
Mnemonic Pin No. Function
NC 1, 4, 5, 6, 8 No Connect Pins.
V
CC
2 +5 V, +3.3 V, +3 V Power Supply
Input.
RESET 7 Logic Output. It remains low while
V
CC
is below the reset threshold
voltage and for 280 ms (typ) after
V
CC
rises above the threshold.
GND 3 Ground, 0 V.
ADM709–SPECIFICATIONS
Parameter Min Typ Max Units Test Conditions/Comments
V
CC
Operating Voltage Range 1.0 5.5 V T
A
= 0°C to +70°C
1.2 5.5 V T
A
= –40°C to +85°C
Supply Current 35 85 µAV
CC
< 3.6 V, T
A
= 0°C to +70°C
35 110 µAV
CC
< 3.6 V, T
A
= –40°C to +85°C
65 150 µAV
CC
< 5.5 V, T
A
= 0°C to +70°C
65 200 µAV
CC
< 5.5 V, T
A
= –40°C to +85°C
Reset Threshold 4.5 4.65 4.75 V ADM709L
4.25 4.40 4.50 V ADM709M
3.00 3.08 3.15 V ADM709T
2.85 2.93 3.00 V ADM709S
2.55 2.63 2.70 V ADM709R
V
CC
to RESET Delay 20 µsV
CC
= Reset Threshold max–min
RESET Active Time-Out Period 140 280 380 ms V
CC
= Reset Threshold max, V
CC
Rising
RESET Output Voltage 0.3 V ADM709R/S/T, I
SINK
= 1.2 mA. V
CC
= Reset
Threshold min
0.4 V ADM709L/M, I
SINK
= 3.2 mA. V
CC
= Reset
Threshold min
0.3 V I
SINK
= 50 µA. V
CC
1.0 V
0.4 V I
SINK
= 100 µA. V
CC
1.2 V
0.8 × V
CC
V ADM709R/S/T, I
SOURCE
= 500 µA, V
CC
Reset
Threshold max
V
CC
–1.5 V V ADM709L/M, I
SOURCE
= 800 µA, V
CC
Reset
Threshold max
Specifications subject to change without notice.
PIN CONFIGURATION
V
CC
RESET
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
ADM709
NC
GND
NC
NC
NC
NC
NC = NO CONNECT

ADM709LAR-REEL

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits RESET GENERATOR I.C.
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union