Overview
The ADM695AR is a microprocessor supervisory circuit produced by Analog Devices Inc. This component is designed to ensure proper startup and shutdown of microprocessor systems, providing essential functions such as power supply monitoring, reset assertion, and battery backup switching.
It is part of the ADM690–ADM695 family, which offers a range of configurations to meet various microprocessor system requirements. The ADM695AR is particularly suited for applications requiring precise voltage monitoring and robust system supervision.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM695AR |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Threshold Voltage | 4.65 V |
| Output Type | Active High, Active Low, Push-Pull |
| Manual Reset | No Manual Reset |
| Watchdog Timers | Watchdog (100 ms, 1.6 s, or Adjustable) |
| Battery Backup Switching | Backup |
| Reset Delay Time | 280 ms |
| Supply Voltage - Max | 5.5 V |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +85°C |
| Operating Supply Current | 1.95 mA |
| Power Fail Detection | Yes |
| Undervoltage Threshold | 4.5 V |
| Overvoltage Threshold | 4.73 V |
| Power Dissipation | 600 mW |
Key Features
- Precision voltage monitoring with a threshold voltage of 4.65 V.
- Low power consumption of 5 mW and a standby current of 600 nA.
- High current drive capability of up to 100 mA without the need for an external pass transistor.
- Watchdog timer with options for 100 ms, 1.6 s, or adjustable timeout periods.
- Automatic battery backup power switching and low switch on-resistance.
- Fast gating of chip enable signals (5 ns).
- Reset assertion down to 1 V VCC and power-on reset output during power-up, power-down, and brownout conditions.
- Write protection for CMOS RAM or EEPROM and separate watchdog timeout, backup battery switchover, and low VCC status outputs.
Applications
- Microprocessor systems.
- Computers and controllers.
- Intelligent instruments.
- Automotive systems.
- Any system requiring robust power supply monitoring and supervisory functions.
Q & A
- What is the primary function of the ADM695AR?
The primary function of the ADM695AR is to ensure proper startup and shutdown of microprocessor systems by monitoring the power supply and providing reset signals and battery backup switching.
- What is the threshold voltage for the ADM695AR?
The threshold voltage for the ADM695AR is 4.65 V.
- What types of output does the ADM695AR support?
The ADM695AR supports active high, active low, and push-pull output types.
- Does the ADM695AR have a watchdog timer?
Yes, the ADM695AR includes a watchdog timer with options for 100 ms, 1.6 s, or adjustable timeout periods.
- What is the maximum operating temperature for the ADM695AR?
The maximum operating temperature for the ADM695AR is +85°C.
- How much current can the ADM695AR drive?
The ADM695AR can drive up to 100 mA without the need for an external pass transistor.
- Does the ADM695AR support battery backup switching?
Yes, the ADM695AR supports automatic battery backup power switching.
- What is the power consumption of the ADM695AR?
The power consumption of the ADM695AR is 5 mW, with a standby current of 600 nA.
- What package type is the ADM695AR available in?
The ADM695AR is available in a 16-SOIC package.
- What are some common applications for the ADM695AR?
The ADM695AR is commonly used in microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
