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ADM8692 Datasheet(PDF) 3 Page - Analog Devices

Part No. ADM8692
Description  Microprocessor Supervisory Circuits
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM8692 Datasheet(HTML) 3 Page - Analog Devices

 
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ADM8690/ADM8691/ADM8692/ADM8693/ADM8695
Rev. B | Page 3 of 20
GENERAL DESCRIPTION
The ADM869x family of supervisory circuits offers complete
single- chip solutions for power supply monitoring and battery
control functions in microprocessor systems. These functions
include microprocessor reset, backup battery switchover,
watchdog timer, CMOS RAM write protection, and power
failure warning. The complete family provides a variety of
configurations to satisfy most microprocessor system
requirements.
The ADM869x family is fabricated using an advanced epitaxial
CMOS process combining low power consumption (0.7 mW),
extremely fast chip enable gating (3 ns), and high reliability.
RESET assertion is guaranteed with VCC as low as 1 V. In
addition, the power switching circuitry is designed for minimal
voltage drop thereby permitting increased output current drive
of up to 100 mA without the need of an external pass transistor.
See Table 1 for a product selection guide listing the characteristics
of each device in the ADM869x family. To place an order, use
the Ordering Guide provided as the last section of this data sheet.
Table 1. Product Selection Guide
Part
Number
Nominal
Reset Time
Nominal V
CC Reset
Threshold
Nominal Watchdog
Timeout Period
Battery Backup
Switching
Base Drive
Ext PNP
Chip Enable
Signals
ADM8690
50 ms
4.65 V
1.6 s
Yes
No
No
ADM8691
50 ms or ADJ
4.65 V
100 ms, 1.6 s, ADJ
Yes
Yes
Yes
ADM8692
50 ms
4.4 V
1.6 s
Yes
No
No
ADM8693
50 ms or ADJ
4.4 V
100 ms, 1.6 s, ADJ
Yes
Yes
Yes
ADM8695
200 ms or ADJ
4.65 V
100 ms, 1.6 s, ADJ
Yes
Yes
Yes


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