ADM692A Analog Devices, ADM692A Datasheet - Page 3

• Manufacturer Part Number: ADM692A
• Manufacturer: Analog Devices

Specifications of ADM692A

• Batt-backup-flg: Yes
• Product Description: µP Supervisor w/ Battery Steering, Watchdog, Pwr Fail Warning, Active Low Reset, 250mA Iout
• Reset Threshold (v): 4.4
• Min Reset Timeout (ms): 140
• Reset Output-stage: Active-Low/Push-Pull
• Backup-battery Switch: Yes
• Chip Enable Gating: ---
• Typ Watchdog Timeout (ms): 1600
• Package: DIP,SOIC
• Us Price 1000-4999: n/a

REV. 0
ABSOLUTE MAXIMUM RATINGS*
(T
V
V
All Other Inputs . . . . . . . . . . . . . . . . . . –0.3 V to V
Input Current
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Power Dissipation, N-8 DIP . . . . . . . . . . . . . . . . . . . 400 mW
Power Dissipation, SO-8 SOIC . . . . . . . . . . . . . . . . . 500 mW
Operating Temperature Range
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300 C
Storage Temperature Range . . . . . . . . . . . . –65 C to +150 C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >4 kV
*Stresses above those listed under “Absolute Maximum Ratings” may cause
Mnemonic
V
V
V
GND
PFI
PFO
RESET
RESET
WDI
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.
CC
BATT
CC
BATT
OUT
A
V
V
GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Industrial (A Version) . . . . . . . . . . . . . . . . –40 C to +85 C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215 C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . +220 C
JA
JA
= +25 C unless otherwise noted)
CC
BATT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 120 C/W
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 110 C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Function
Power Supply Input: +5 V Nominal.
Backup Battery Input. As V
to V
Output Voltage. When V
When V
0 V. Ground reference for all signals.
Power Fail Comparator Input. If PFI is less than 1.25 V, the power fail output PFO goes low. If unused, PFI
should be connected to V
Power Fail Comparator Output. If PFI is less than 1.25 V, the power fail output PFO goes low.
Logic Output. RESET goes low if
1. V
2. The watchdog timer is not serviced within its timeout period (1.6 seconds)
The reset threshold is typically 4.65 V for the ADM690A/ADM802L/ADM805L and 4.4 V for the ADM692A/
ADM802M/ADM805M. RESET remains low for 200 ms after V
goes low for 200 ms if the watchdog timer is enabled but not serviced within its timeout period.
Active high RESET output (ADM805L/M only). This is the inverse of RESET. The asserted (high) level is V
or V
Watchdog Input. WDI is a three level input. If WDI remains either high or low for longer than 1.6 s, (RESET)
(RESET) is activated. The timer resets with each transition on the WDI line. The watchdog timer may be
disabled if WDI is left floating or is connected to a high impedance three stated logic output.
OUT
BATT
CC
falls below the Reset Threshold
. On power-up as V
CC
whichever is higher.
is below the reset threshold, the higher of V
CC
CC
CC
CC
is above the reset threshold, V
or GND.
PIN FUNCTION DESCRIPTION
rises to 20 mV above V
falls below the reset threshold and below V
CC
+ 0.3 V
ADM690A/ADM692A/ADM802L/M/ADM805L/M
–3–
Model
ADM690AAN
ADM690AARN
ADM690AARM
ADM692AAN
ADM692AARN
ADM802LAN
ADM802LARN
ADM802MAN
ADM802MARN
ADM805LAN
ADM805LARN
ADM805MAN
ADM805MARN
BATT
CC
or V
OUT
, V
OUT
BATT
is connected to V
CC
will be switched back to V
is connected to V
returns above the threshold. RESET also
PIN CONFIGURATIONS
V
GND
V
OUT
PFI
ORDERING GUIDE
CC
BATT
1
2
3
4
Temperature
Range
–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
–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
(Not to Scale)
ADM690A
ADM692A
ADM802L
ADM802M
ADM805L
ADM805M
by 20 mV, V
TOP VIEW
CC
through an on chip switch.
OUT
8
7
6
5
.
V
RESET (RESET)
WDI
PFO
BATT
BATT
CC
.
will be switched
Package
Option
N-8
SO-8
RM-8
N-8
SO-8
N-8
SO-8
N-8
SO-8
N-8
SO-8
N-8
SO-8
CC