ADM9690 Analog Devices, ADM9690 Datasheet - Page 3

• Manufacturer Part Number: ADM9690
• Description: Power Supply and Watchdog Timer Monitoring Circuit
• Manufacturer: Analog Devices

Specifications of ADM9690

• Batt-backup-flg: No
• Manual Reset Capability: No
• Package: SOIC
• Power Fail Indicator: No
• Reset Threshold Summary: 4.31V
• Reset Output-stage: Active-Low/Push-Pull
• Min Reset Timeout (ms): 10,50
• Typ Watchdog Timeout (ms): 0.75,1.5,12.5,25
• Watchdog Timer: Yes

REV. A
Model
ADM9690AR
ABSOLUTE MAXIMUM RATINGS*
(T
V
V
Input Current
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . 200 mA
Power Dissipation, R-8 SOIC . . . . . . . . . . . . . . . . . . 400 mW
θ
Industrial (A Version) . . . . . . . . . . . . . . . . . . –40°C to +85°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . +300°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 kV
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; 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.
JA
CC
MON
A
V
GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
= +25°C unless otherwise noted)
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 120°C/W
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
. . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
Temperature
Range
–40°C to +85°C
PIN CONFIGURATION
V
SEL1
SEL2
GND
MON
ORDERING GUIDE
1
2
3
4
(Not to Scale)
ADM9690
TOP VIEW
Package
Description
8-Lead Narrow
Body SOIC
8
7
6
5
RESET(1)
RESET(2)
V
WDI
CC
CC
Package
Option
SO-8
+ 0.3 V
–3–
Mnemonic
V
V
GND
RESET(1)
RESET(2)
WDI
SEL1, 2
CC
MON
PIN FUNCTION DESCRIPTIONS
Function
Power Supply Input; +5 V.
Voltage Monitoring Input.
0 V. Ground reference for all signals.
Logic Output. RESET(1) goes low if V
falls below the Reset Threshold or the Watch-
dog timer is not serviced within its timeout
period. The reset threshold is typically 4.4 V
for the ADM9690. RESET(1) remains low
for 50 ms after V
old. RESET(1) also goes low for 50 ms if the
Watchdog Timer is not serviced within its
timeout period.
Logic Output. RESET(2) goes low simulta-
neously with RESET(1) but remains low for
an additional 10 ms.
Watchdog Input. If an edge is not detected on
WDI within the selectable watchdog timeout
period, RESET(1) and RESET(2) are forced
low for their respective timeout periods. The
watchdog timer restarts with each positive
or negative going transition on the WDI
line. Following a reset it is restarted when
RESET(1) goes inactive (high). The Watch-
dog Timer may be disabled if WDI is left
floating or is driven to midsupply.
Watchdog Timeout selection inputs. Refer to
Table I.
CC
returns above the thresh-
ADM9690
MON