ADM824 Analog Devices, ADM824 Datasheet - Page 8

• Manufacturer Part Number: ADM824
• Description: Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23
• Manufacturer: Analog Devices

Specifications of ADM824

• Batt-backup-flg: No
• Manual Reset Capability: No
• Package: SC70,SOT
• Power Fail Indicator: No
• Reset Threshold Summary: 7 Options--2.19 to 4.63V
• Reset Output-stage: Active-High/Push-Pull,Active-Low/Push-Pull
• Min Reset Timeout (ms): 140
• Typ Watchdog Timeout (ms): 1600
• Watchdog Timer: Yes

ADM823/ADM824/ADM825
Figure 12. Maximum V
160
140
120
100
80
60
40
20
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
10
0
–40
Figure 11. Watchdog Timeout Period vs. Temperature
V
V
TH
–20
TH
= 2.93V
= 4.63V
CC
0
Transient Duration vs. Reset Threshold Overdrive
OVERDRIVE VOD (mV)
(ADM823/ADM824)
TEMPERATURE (°C)
20
RESET OCCURS ABOVE GRAPH
100
40
60
80
100
1000
120
Rev. C | Page 8 of 12
Figure 14. Watchdog Input Minimum Pulse Width vs. Temperature
190
180
170
160
150
140
130
120
100
110
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
Figure 13. Manual Reset Minimum Pulse Width vs. Temperature
–50
–40
10
NEGATIVE PULSE
POSITIVE PULSE
0
(ADM823/ADM825)
(ADM823/ADM824)
TEMPERATURE (°C)
TEMPERATURE (°C)
60
50
110
100
160