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MFG:ADI D/C:09
Part Number: ADM690A
MFG: ADI
D/C: 09
Description: The ADM690A/ADM692A/ADM802L/M/ADM805L/Mfamily of supervisory circuits offers complet...
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ADM690A
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DataSheet
General Description
ADM690A General Description
The ADM690A/ADM692A/ADM802L/M/ADM805L/M family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include µP reset, backup battery switchover, watchdog timer, and power failure warnin The ADM690A/ADM692A/ADM802L/M/ADM805L/M are available in 8-pin packages and provide:
1. Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains opera-
tional with VCC as low as 1 V.
2. Battery backup switching for CMOS RAM, CMOS microprocessor or other low power devices.
3. A reset pulse if the optional watchdog timer has not been toggled within 1.6 seconds.
4. A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.On the ADM690A/ADM802L/ADM805L the reset voltage threshold is 4.65 V. On theADM692A/ADM802MADM805M, the reset voltage threshold is 4.40 V.
The ADM802L/ADM802M guarantee power fail accuracies to ±2%.
The ADM805L/M provides an active high reset output, RESET instead of RESET.
The family of products is fabricated using an advanced epitaxial CMOS process combining low power consumption and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. They provide a pin-compatible upgrade for the MAX690A/MAX692A/MAX802L/MAX802M/MAX805L All parts are available in 8-pin DIP and SOIC packages. ADM690A is also available in a new space-saving microSOICpackage.
ADM690A Maximum Ratings
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
VBATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
All Other Inputs . . . . . . . . . . . . . . . . . . 0.3 V to VCC + 0.3 V
Input Current
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 mA
VBATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Power Dissipation, N-8 DIP . . . . . . . . . . . . . . . . . . . 400 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 120°C/W
Power Dissipation, SO-8 SOIC . . . . . . . . . . . . . . . . . 500 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 110°C/W
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . 40°C to +85°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . .+300°C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . .+220°C
Storage Temperature Range . . . . . . . . . . . . 65°C to +150°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >4 kV
VBATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
All Other Inputs . . . . . . . . . . . . . . . . . . 0.3 V to VCC + 0.3 V
Input Current
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 mA
VBATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Power Dissipation, N-8 DIP . . . . . . . . . . . . . . . . . . . 400 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 120°C/W
Power Dissipation, SO-8 SOIC . . . . . . . . . . . . . . . . . 500 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 110°C/W
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . 40°C to +85°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . .+300°C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . .+220°C
Storage Temperature Range . . . . . . . . . . . . 65°C to +150°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >4 kV
ADM690A Features
Precision Supply Voltage Monitor
4.65 V ADM690A/ADM802L/ADM805L
4.40 V ADM692A/ADM802M/ADM805M
Reset Assertion Down to 1 V VCC
Reset Timeout-200 ms
Watchdog Timer-1.6 s
100 mA Quiescent Supply Current
Automatic Battery Backup Power Switching
Voltage Monitor for Power Fail
62% Power Fail Accuracy on ADM802L/M
Space-Saving MicroSOIC Package (ADM690A)
4.65 V ADM690A/ADM802L/ADM805L
4.40 V ADM692A/ADM802M/ADM805M
Reset Assertion Down to 1 V VCC
Reset Timeout-200 ms
Watchdog Timer-1.6 s
100 mA Quiescent Supply Current
Automatic Battery Backup Power Switching
Voltage Monitor for Power Fail
62% Power Fail Accuracy on ADM802L/M
Space-Saving MicroSOIC Package (ADM690A)
ADM690A
PDF/DataSheet Download
- Datasheet: ADM690A
- File Size: 335233 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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