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ADM690ADM695 Datasheet(PDF) 2 Page - Analog Devices

Part No. ADM690ADM695
Description  Microprocessor Supervisory Circuits
Download  16 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM690ADM695 Datasheet(HTML) 2 Page - Analog Devices

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


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