ADM691A Analog Devices, ADM691A Datasheet - Page 6

• Manufacturer Part Number: ADM691A
• Manufacturer: Analog Devices

Specifications of ADM691A

• Batt-backup-flg: Yes
• Product Description: µP Supervisor with Battery Backup, Watchdog, Power Fail Indicator & Reset Generator
• Reset Threshold (v): 4.65
• Min Reset Timeout (ms): 140 (Adjustable)
• Reset Output-stage: Active-High/Open-Drain,Active-Low/Push-Pull
• Backup-battery Switch: Yes
• Chip Enable Gating: Yes
• Typ Watchdog Timeout (ms): 100,1600,adj.
• Package: DIP,SOIC,SOP
• Us Price 1000-4999: n/a

ADM691A/ADM693A/ADM800L/M
Figure 8. Battery Current vs. Input Supply Voltage
Figure 9. Watchdog and Reset Timeout Period vs.
OSC IN Capacitor
Figure 10. Chip Enable Propagation Delay vs.
Temperature
100
0.1
7.0
6.5
6.0
5.5
5.0
4.5
4.0
10
10
9
8
7
6
5
4
3
2
1
0
1
–50
10
0
0.5
TIMEOUT PERIOD = >
SHORT WATCHDOG
–25
TIMEOUT PERIOD
1.0
RESET ACTIVE
LONG WATCHDOG TIMEOUT PERIOD
1.5
0
TEMPERATURE – C
2.0
25
C
V
OSC
CC
100
2.5
– pF
– V
50
3.0
V
BATT
3.5
75
= 2.8V
4.0
100
4.5
125
5.0
1k
–6–
Figure 13. RESET Output Resistance vs. Temperature
Figure 12. Reset Timeout Relay vs. Temperature
Figure 11. Chip Enable Propagation Delay vs.
Load Capacitance
1200
1000
230
220
210
200
190
180
170
800
600
400
200
16
14
12
10
8
6
4
2
0
0
–50
–50
0
–30
50
–20
–10
LOAD CAPACITANCE – pF
V
V
SOURCING CURRENT
100
CC
CC
SINKING CURRENT
10
TEMPERATURE – C
TEMPERATURE – C
= 5V, V
= 0V, V
10
150
BATT
BATT
40
= 2.8V
= 2.8V
30
200
70
50
250
100
70
300
130
90
REV. 0