adm693aq Analog Devices, Inc., adm693aq Datasheet - Page 9

• Manufacturer Part Number: adm693aq
• Description: Microprocessor Supervisory Circuits
• Manufacturer: Analog Devices, Inc.

REV. A
Figure 11. PFI Input Threshold vs.
Temperature
Figure 14. Power Fail Comparator
Response Time
1.303
1.300
1.35
1.25
5.00
4.85
1.302
1.301
1.299
4.95
4.90
4.80
Figure 8. V
Operation
6
5
4
3
2
1
0
0
20
0
0.1
20
40
SLOPE = 1.5
0.2
TEMPERATURE –
OUT
0.3 0.4
1.3V
V
TIME – s
40
I
60
OUT
PFI
vs. I
V
T
– mA
A
CC
= +25 C
0.5 0.6
PFO
OUT
60
= 5V
80
V
T
Normal
A
°
CC
C
= +25 C
0.7
80
= 5V
100
30pF
0.8
100
120
1.35
1.25
Figure 15. Power Fail Comparator
Response Time
2.80
2.77
2.79
2.78
2.76
53
50
52
51
49
6
5
4
3
2
1
0
Figure 9. V
Backup
Figure 12. Reset Active Time vs.
Temperature
20
Typical Performance Curves–ADM690–ADM695
0
V
T
CC
A
0
= +25 C
= 5V
40
10
200
TEMPERATURE – C
SLOPE = 20
20
OUT
V
1.3V
30 40
60
TIME – s
400
PFI
–9–
I
OUT
vs. I
– A
PFO
V
V
T
50 60
80
600
A
OUT
CC
BATT
= +25 C
= 0V
V
= +2.8V
ADM690
ADM691
ADM692
ADM693
Battery
CC
100
70
800
30pF
= +5V
80
120
90
1000
Figure 16. Power Fail Comparator
Response Time with Pull-Up Resistor
Figure 10. Reset Output Voltage vs.
Supply Voltage
Figure 13. Reset Voltage Threshold
vs. Temperature
1.35
1.25
100
90
10
0%
4.70
4.68
4.66
4.64
4.62
6
5
4
3
2
1
0
0
20
1V
A4
V
T
CC
A
0
= +25 C
V
POWER-UP
POWER-DOWN
= 5V
CC
0.2
3.36 V
40
1V
= +5V
0.4
TEMPERATURE – C
0.6 0.8
V
1.3V
TIME – s
60
PFI
PFO
1.0 1.2
80
500ms
+5V
+5V
ADM690
ADM691
ADM694
ADM695
1.4
100
10k
30pF
1.6
1.8
120