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ADM690, ADM6909, ADM6909-BA

Table of contents:
Info of ADM690
Info of ADM6909
Info of ADM6909-BA

ADM690, ADM6909, ADM6909-BA Selling Leads, Datasheet

MFG:AD Package Cooled:SOP D/C:04+

ADM690, ADM6909, ADM6909-BA Datasheet download

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Part Number: ADM690

MFG: AD

Package Cooled: SOP

D/C: 04+

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ADM690 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.

ADM690 Maximum Ratings

V_CC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
V_BATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
All Other Inputs . . . . . . . . . .. . . .. 0.3 V to V_OUT + 0.5 V
Input Current
V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
V_BATT. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 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

ADM690 Features

Superior Upgrade for MAX690MAX695
Specified Over Temperature
Low Power Consumption (5 mW)
Precision Voltage Monitor
Reset Assertion Down to 1 V V_CC
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

ADM690 Typical Application

Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Automotive Systems

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