ADM691A/ADM693A/ADM800L/M–SPECIFICATIONS
(V
CC
= 4.75 V to 5.5 V (ADM691A, ADM800L) 4.5 V to 5.5 V (ADM693A, ADM800M) V
BATT
= +2.8 V, T
A
= T
MIN
to T
MAX
unless otherwise noted)
Parameter
BATTERY BACKUP SWITCHING
V
CC
, V
BATT
Operating Voltage Range
V
OUT
Output Voltage
V
CC
to V
OUT
Output Resistance
V
OUT
in Battery Backup Mode
Min
0
V
CC
– 0.05
V
CC
– 0.3
V
BATT
– 0.3
V
BATT
– 0.25
V
BATT
– 0.15
12
20
25
100
1
+0.02
+0.02
V
BATT
+ 0.03
V
BATT
– 0.03
60
0.1
0.4
0.7
1.5
60
15
100
Typ
Max
5.5
V
CC
– 0.02
V
CC
– 0.2
0.8
Unit
V
V
V
Ω
V
V
V
Ω
Ω
Ω
µA
µA
µA
µA
V
V
mV
V
V
mA
µA
Test Conditions/Comments
I
OUT
= 25 mA
I
OUT
= 250 mA
V
CC
= 4.5 V
V
BATT
= 4.5 V, I
OUT
= 20 mA
V
BATT
= 2.8 V, I
OUT
= 10 mA
V
BATT
= 2.0 V, I
OUT
= 5 mA
V
BATT
= 4.5 V
V
BATT
= 2.8 V
V
BATT
= 2.0 V
V
CC
> (V
BATT
– 1 V)
V
CC
< (V
BATT
– 1.2 V), V
BATT
= 2.8 V
5.5 V > V
CC
> V
BATT
+ 0.2 V
(V
BATT
+0.2 V) < V
CC
, T
A
= +25°C
(V
BATT
+0.2 V) < V
CC
Power Up
Power Down
I
SINK
= 3.2 mA
I
SINK
= 25 mA
Sink Current
Source Current
1.2
V
BATT
to V
OUT
Output Resistance
Supply Current (Excludes I
OUT
)
Supply Current in B. Backup (Excludes I
OUT
)
Battery Standby Current
(+ = Discharge, – = Charge)
Battery Switchover Threshold
V
CC
–V
BATT
Battery Switchover Hysteresis
BATT ON Output Voltage Low
BATT ON Output Short Circuit Current
70
0.04
–0.1
–1.0
1
RESET AND WATCHDOG TIMER
Reset Voltage Threshold
ADM691A, ADM800L
ADM693A, ADM800M
ADM800L, V
CC
Falling
ADM800M, V
CC
Falling
Reset Threshold Hysteresis
V
CC
to RESET Delay
LOW LINE
to RESET Delay
Reset Timeout Period Internal Oscillator
Reset Timeout Period External Clock
Watchdog Timeout Period, Internal Oscillator
Watchdog Timeout Period, External Clock
Minimum WDI Input Pulse Width
RESET
Output Voltage
100
4.5
4.25
4.55
4.3
4.65
4.40
4.75
4.50
4.70
4.45
140
1.0
70
15
80
800
200
2048
1.6
100
4096
1024
0.004
0.1
280
2.25
140
0.3
0.4
20
0.4
3.5
RESET
Output Short Circuit Current
RESET Output Voltage Low
LOW LINE
Output Voltage
LOW LINE Short Circuit Source Current
WDO
Output Voltage
WDO Short Circuit Source Current
WDI Input Threshold
Logic Low
Logic High
WDI Input Current
POWER FAIL DETECTOR
PFI Input Threshold ADM69xA
PFI Input Threshold ADM800L/M
PFI Input Current
PFO
Output Voltage
PFO
Short Circuit Source Current
PFI
to
PFO
Delay
0.1
3.5
1
3.5
3
0.75
×
V
CC
–50
10
0.8
–10
20
1.25
1.25
±
0.01
7
0.4
15
100
0.4
V
V
V
V
mV
µs
ns
ms
Cycles
s
ms
Cycles
Cycles
ns
V
V
V
mA
V
V
V
µA
V
V
mA
V
V
µA
µA
V
V
nA
V
µA
µs
µs
T
A
= +25°C
T
A
= +25°C
Power Down
Power Up
Power Up
Long Period
Short Period
Long Period
Short Period
V
IL
= 0.4, V
IH
= 0.75
×
V
CC
I
SINK
= 50
µA,
V
CC
= 1 V, V
BATT
= 0 V
I
SINK
= 3.2 mA, V
CC
= 4.25 V
I
SOURCE
= 1.6 mA, V
CC
= 5 V
I
SINK
= 3.2 mA
I
SINK
= 3.2 mA, V
CC
= 4.25 V
I
SOURCE
= 1
µA,
V
CC
= 5 V
I
SINK
= 3.2 mA, V
CC
= 4.25 V
I
SOURCE
= 500
µA,
V
CC
= 5 V
50
1.3
1.275
±
25
0.4
100
WDI = 0 V
WDI = V
OUT
V
CC
= 5 V
V
CC
= 5 V
I
SINK
= 3.2 mA
I
SOURCE
= 1
µA
V
IN
= –20 mV
V
IN
= 20 mV
1.2
1.225
3.5
1
15
25
60
–2–
REV. 0
AD [ ANALOG DEVICES ]
