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MFG:ADI D/C:09
Part Number: ADM694
MFG: ADI
D/C: 09
Description: The ADM690ADM695 family of supervisory circuits offers complete single chip solutions for power supply...
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ADM694
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DataSheet
General Description
ADM694 General Description
The ADM690ADM695 family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include mP 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 ADM690, ADM692 and ADM694 are available in 8-pin DIP packages and provide:
1. Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains operational with VCC as low as 1 V.
2. Battery backup switching for CMOS RAM, CMOS microprocessor or other low power logic.
3. A reset pulse if the optional watchdog timer has not been toggled within a specified time.
4. A 1.3 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.
The ADM691, ADM693 and ADM695 are available in 16-pin DIP and small outline packages and provide three additional functions.
1. Write protection of CMOS RAM or EEPROM.
2. Adjustable reset and watchdog timeout periods.
3. Separate watchdog timeout, backup battery switchover, and low VCC status outputs.
The ADM690ADM695 family is fabricated using an advanced epitaxial CMOS process combining low power consumption (5 mW), extremely fast Chip Enable gating (5 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 for an external pass transistor .
ADM694 Maximum Ratings
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
VBATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
All Other Inputs . . . . . . . . . . . . . . . . . 0.3 V to VOUT + 0.5 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, Q-8 DIP . . . . . . . . . . . . . . . . . . . 500 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . .. 125°C/W
Power Dissipation, N-16 DIP . . . . . . . . . . . . . . . . . . 600 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . .135°C/W
Power Dissipation, Q-16 DIP . . . . . . . . . . . . . . . . . . 600 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . .100°C/W
Power Dissipation, R-16 SOIC . . . . . . . . . . . . . . . . . .600 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . .. 110°C/W
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . ... 40°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . . . 55°C to +125°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . +300°C
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
Storage Temperature Range . . . . . . . . . . . 65°C to +150°C
*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods of time may affect device reliability.
VBATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
All Other Inputs . . . . . . . . . . . . . . . . . 0.3 V to VOUT + 0.5 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, Q-8 DIP . . . . . . . . . . . . . . . . . . . 500 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . .. 125°C/W
Power Dissipation, N-16 DIP . . . . . . . . . . . . . . . . . . 600 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . .135°C/W
Power Dissipation, Q-16 DIP . . . . . . . . . . . . . . . . . . 600 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . .100°C/W
Power Dissipation, R-16 SOIC . . . . . . . . . . . . . . . . . .600 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . .. 110°C/W
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . ... 40°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . . . 55°C to +125°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . +300°C
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
Storage Temperature Range . . . . . . . . . . . 65°C to +150°C
*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods of time may affect device reliability.
ADM694 Features
` Superior Upgrade for MAX690MAX695
` Specified Over Temperature
` Low Power Consumption (5 mW)
` Precision Voltage Monitor
` Reset Assertion Down to 1 V VCC
` Low Switch On-Resistance 1.5 Normal,20 in Backup
` High Current Drive (100 mA)
` Watchdog Timer-100 ms, 1.6 s, or Adjustable
` 600 nA Standby Current
` Automatic Battery Backup Power Switching
` Extremely Fast Gating of Chip Enable Signals (5 ns)
` Voltage Monitor for Power Fail
` Specified Over Temperature
` Low Power Consumption (5 mW)
` Precision Voltage Monitor
` Reset Assertion Down to 1 V VCC
` Low Switch On-Resistance 1.5 Normal,20 in Backup
` High Current Drive (100 mA)
` Watchdog Timer-100 ms, 1.6 s, or Adjustable
` 600 nA Standby Current
` Automatic Battery Backup Power Switching
` Extremely Fast Gating of Chip Enable Signals (5 ns)
` Voltage Monitor for Power Fail
ADM694 Typical Application
· Microprocessor Systems
· Computers
· Controllers
· Intelligent Instruments
· Automotive Systems
· Computers
· Controllers
· Intelligent Instruments
· Automotive Systems
ADM694 Connection Diagram
ADM694
PDF/DataSheet Download
- Datasheet: ADM694
- File Size: 604914 KB
- Manufacturer: AD
- Click here to Download
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ADM694 Relative Products
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