Overview
The ADM809LART-REEL7 is a supervisory circuit produced by Analog Devices Inc., designed to monitor the power supply voltage in microprocessor systems. This component provides essential reset functionality during power-up, power-down, and brownout conditions, ensuring the microprocessor operates within stable voltage conditions. The ADM809LART-REEL7 is part of the ADM809 series, which offers various reset threshold voltage options to cater to different supply voltages.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Reset Threshold Voltage | 4.63 V | Rising threshold voltage |
| Reset Output Type | Active-low, push-pull | Requires no external pull-up resistor |
| Reset Timeout Period | 140 ms minimum | Ensures stable power-up conditions |
| Power Consumption | 17 μA | Low power consumption suitable for portable equipment |
| Operating Temperature Range | -40°C to +125°C | Suitable for harsh environments |
| Package Type | 3-Lead SOT-23 | Surface mount device, compact package |
| VCC to Reset Delay | 20 μs | From VCC = VTH to (VTH - 100 mV) |
| Reset Output Voltage Low | 0.3 V (VCC = VTH min, ISINK = 1.2 mA) | Output voltage specifications |
Key Features
- Precision Voltage Monitoring: The ADM809LART-REEL7 offers precise monitoring of the power supply voltage with a reset threshold of 4.63 V.
- Low Power Consumption: Consumes only 17 μA, making it suitable for low-power and portable equipment.
- Reset Output: Provides an active-low reset output with a push-pull configuration, eliminating the need for an external pull-up resistor.
- Glitch Immunity: The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC.
- Compact Packaging: Available in a 3-lead SOT-23 package, ideal for space-constrained applications.
- Wide Operating Temperature Range: Operates over a temperature range of -40°C to +125°C, suitable for harsh environments.
Applications
- Microprocessor Systems: Ideal for monitoring and controlling power supply voltages in microprocessor-based systems.
- Computers and Controllers: Used in various computer and controller applications to ensure stable power conditions.
- Intelligent Instruments: Suitable for use in intelligent instruments that require precise voltage monitoring and reset functionality.
- Industrial and Consumer Electronics: Applicable in both industrial and consumer electronics where reliable power-on reset functions are necessary.
Q & A
- What is the primary function of the ADM809LART-REEL7?
The primary function is to monitor the power supply voltage in microprocessor systems and provide a reset output during power-up, power-down, and brownout conditions.
- What is the reset threshold voltage of the ADM809LART-REEL7?
The reset threshold voltage is 4.63 V.
- What type of reset output does the ADM809LART-REEL7 provide?
The ADM809LART-REEL7 provides an active-low reset output with a push-pull configuration.
- How much power does the ADM809LART-REEL7 consume?
The component consumes 17 μA, making it suitable for low-power applications.
- What is the operating temperature range of the ADM809LART-REEL7?
The operating temperature range is -40°C to +125°C.
- What type of package does the ADM809LART-REEL7 come in?
The component is available in a 3-lead SOT-23 package.
- Does the ADM809LART-REEL7 require an external pull-up resistor for the reset output?
No, the ADM809LART-REEL7 does not require an external pull-up resistor due to its push-pull output configuration.
- What is the minimum reset timeout period of the ADM809LART-REEL7?
The minimum reset timeout period is 140 ms.
- Is the ADM809LART-REEL7 immune to voltage transients?
Yes, the reset comparator features built-in glitch immunity, making it immune to fast transients on VCC.
- In what types of systems is the ADM809LART-REEL7 commonly used?
The ADM809LART-REEL7 is commonly used in microprocessor systems, computers, controllers, and intelligent instruments.
