Overview
The ADM809RART-REEL7 is a supervisory circuit produced by Analog Devices Inc., designed to monitor the power supply voltage in microprocessor systems. This component is part of the ADM809 series, which includes various models with different reset threshold voltages. The ADM809RART-REEL7 specifically monitors a reset threshold voltage of 2.63 V, making it suitable for systems requiring precise voltage monitoring.
Key Specifications
| Parameter | Value |
|---|---|
| Reset Threshold Voltage | 2.63 V |
| Package Type | 3-Lead SOT-23 |
| Operating Temperature Range | −40°C to +105°C |
| Power Consumption | 17 μA |
| Reset Output Type | Push-pull, Active Low |
| Reset Active Timeout Period | 140 ms to 240 ms |
| VCC to Reset Delay | 20 μs |
| Reset Output Voltage Low | 0.3 V (VCC = VTH min, ISINK = 1.2 mA) |
| Reset Output Voltage High | 0.8 VCC (VCC > VTH max, ISOURCE = 500 μA) |
Key Features
- Precision voltage monitoring with a reset threshold voltage of 2.63 V.
- Low power consumption of 17 μA, suitable for low power and portable equipment.
- Push-pull reset output with active low signal.
- Internal timer providing a minimum power-on reset period of 240 ms.
- Glitch immunity on the reset comparator to prevent false resets due to fast transients on VCC.
- Available in 3-lead SOT-23 package.
- Operational down to VCC = 1 V, ensuring the reset output remains functional even at low supply voltages.
Applications
The ADM809RART-REEL7 is designed for use in various microprocessor systems, including computers, controllers, and intelligent instruments. It is particularly useful in applications requiring reliable power supply monitoring and reset functionality, such as:
- Microprocessor-based systems.
- Embedded systems.
- Industrial control systems.
- Portable electronic devices.
Q & A
- What is the primary function of the ADM809RART-REEL7?
The primary function is to monitor the power supply voltage in microprocessor systems and provide a reset output during power-up, power-down, or brownout conditions. - What is the reset threshold voltage for the ADM809RART-REEL7?
The reset threshold voltage is 2.63 V. - What type of package does the ADM809RART-REEL7 come in?
The component comes in a 3-lead SOT-23 package. - How much power does the ADM809RART-REEL7 consume?
The power consumption is 17 μA. - What is the reset output type of the ADM809RART-REEL7?
The reset output is push-pull with an active low signal. - What is the minimum power-on reset period provided by the internal timer?
The minimum power-on reset period is 240 ms. - Is the ADM809RART-REEL7 immune to glitches on the power supply?
Yes, it features built-in glitch immunity on the reset comparator. - What is the operating temperature range of the ADM809RART-REEL7?
The operating temperature range is −40°C to +105°C. - How does the reset output behave when VCC falls below 1 V?
The reset output remains operational down to VCC = 1 V, but may require additional circuitry to ensure a valid reset signal at lower voltages. - What are some common applications of the ADM809RART-REEL7?
Common applications include microprocessor systems, computers, controllers, and intelligent instruments.
