Datasheet

ADM690–ADM695–SPECIFICATIONS
Parameter Min Typ Max Units Test Conditions/Comments
BATTERY BACKUP SWITCHING
V
CC
Operating Voltage Range
ADM690, ADM691, ADM694, ADM695 4.75 5.5 V
ADM692, ADM693 4.5 5.5 V
V
BATT
Operating Voltage Range
ADM690, ADM691, ADM694, ADM695 2.0 4.25 V
ADM692, ADM693 2.0 4.0 V
V
OUT
Output Voltage V
CC
– 0.05 V
CC
– 0.025 V I
OUT
= 1 mA
V
CC
– 0.5 V
CC
– 0.25 V I
OUT
≤ 100 mA
V
OUT
in Battery Backup Mode V
BATT
– 0.05 V
BATT
– 0.02 V I
OUT
= 250 µA, V
CC
< V
BATT
– 0.2 V
Supply Current (Excludes I
OUT
) 1 1.95 mA I
OUT
= 100 mA
Supply Current in Battery Backup Mode 0.6 1 µAV
CC
= 0 V, V
BATT
= 2.8 V
Battery Standby Current 5.5 V > V
CC
> V
BATT
+ 0.2 V
(+ = Discharge, – = Charge) –0.1 +0.02 µAT
A
= +25°C
–1.0 +0.02 µA
Battery Switchover Threshold 70 mV Power Up
V
CC
– V
BATT
50 mV Power Down
Battery Switchover Hysteresis 20 mV
BATT ON Output Voltage 0.3 V I
SINK
= 3.2 mA
BATT ON Output Short Circuit Current 35 mA BATT ON = V
OUT
= 4.5 V Sink Current
0.5 1 25 µA BATT ON = 0 V Source Current
RESET AND WATCHDOG TIMER
Reset Voltage Threshold
ADM690, ADM691, ADM694, ADM695 4.5 4.65 4.73 V
ADM692, ADM693 4.25 4.4 4.48 V
Reset Threshold Hysteresis 40 mV
Reset Timeout Delay
ADM690, ADM691, ADM692, ADM693 35 50 70 ms OSC SEL = HIGH, V
CC
= 5 V, T
A
= +25°C
ADM694, ADM695 140 200 280 ms OSC SEL = HIGH, V
CC
= 5 V, T
A
= +25°C
Watchdog Timeout Period, Internal Oscillator 1.0 1.6 2.25 s Long Period, V
CC
= 5 V, T
A
= +25°C
70 100 140 ms Short Period, V
CC
= 5 V, T
A
= +25°C
Watchdog Timeout Period, External Clock 3840 4097 Cycles Long Period
768 1025 Cycles Short Period
Minimum WDI Input Pulse Width 50 ns V
IL
= 0.4, V
IH
= 3.5 V
RESET Output Voltage @ V
CC
= +1 V 4 200 mV I
SINK
= 10 µA, V
CC
= 1 V
RESET, LOW LINE Output Voltage 0.4 V I
SINK
= 1.6 mA, V
CC
= 4.25 V
3.5 V I
SOURCE
= 1 µA, V
CC
= 5 V
RESET, WDO Output Voltage 0.4 V I
SINK
= 1.6 mA, V
CC
= 5 V
3.5 V I
SOURCE
= 1 µA, V
CC
= 4.25 V
Output Short Circuit Source Current 1 3 25 µA
Output Short Circuit Sink Current 25 mA
WDI Input Threshold V
CC
= 5 V
1
Logic Low 0.8 V
Logic High 3.5 V
WDI Input Current 20 50 µA WDI = V
OUT
, T
A
= +25°C
–50 –15 µA WDI = 0 V, T
A
= +25°C
POWER FAIL DETECTOR
PFI Input Threshold 1.25 1.3 1.35 V V
CC
= +5 V
PFI Input Current –25 ±0.01 +25 nA
PFO Output Voltage 0.4 V I
SINK
= 3.2 mA
3.5 V I
SOURCE
= 1 µA
PFO Short Circuit Source Current 1 3 25 µA PFI = Low, PFO = 0 V
PFO Short Circuit Sink Current 25 mA PFI = High, PFO = V
OUT
CHIP ENABLE GATING
CE
IN
Threshold 0.8 V V
IL
3.0 V V
IH
CE
IN
Pull-Up Current 3 µA
CE
OUT
Output Voltage 0.4 V I
SINK
= 3.2 mA
V
OUT
– 1.5 V I
SOURCE
= 3.0 mA
V
OUT
– 0.05 V I
SOURCE
= 1 µA, V
CC
= 0 V
CE Propagation Delay 5 9 ns
REV. A
(V
CC
= Full Operating Range, V
BATT
= +2.8 V, T
A
= T
MIN
to
T
MAX
unless otherwise noted)
–2–
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