Overview
The ADM809TAKSZ-REEL7 is a microprocessor supervisory circuit produced by Analog Devices Inc. This component is designed to monitor the power supply voltage in microprocessor systems, ensuring stable operation during power-up, power-down, and brownout conditions. It provides a reset output to hold the microprocessor in a reset state until the power supply voltage stabilizes. The ADM809 is part of the ADM809 series, which is known for its low power consumption and precision voltage monitoring capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SC-70-3 |
| Reset Output Type | Active Low |
| Reset Threshold Voltage Options | Multiple options (e.g., 2.55 V, 2.93 V, etc.) |
| Power-On Reset Time | 55 ms (typical) |
| Low Power Consumption | 17 μA |
| Operating Temperature Range | −40°C to +150°C |
| VCC Range | −0.3 V to +6 V |
| Reset Output Voltage Low | 0.3 V (VCC = VTH min, ISINK = 1.2 mA) |
| Junction Temperature Range | −40°C to +150°C |
Key Features
- Precision voltage monitoring with multiple reset threshold voltage options
- Low power consumption of 17 μA, making it suitable for portable equipment
- Active low reset output with push-pull configuration
- Internal timer holds reset asserted for 55 ms during power-up to ensure stable conditions
- Reset output remains operational with VCC as low as 1 V
- Built-in glitch immunity to protect against fast transients on VCC
- Available in SOT-23 and SC70 packages
Applications
- Microprocessor systems
- Computers and controllers
- Intelligent instruments
- Automotive systems
Q & A
- What is the primary function of the ADM809TAKSZ-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 typical power-on reset time for the ADM809? The typical power-on reset time is 55 ms.
- How much power does the ADM809 consume? The ADM809 consumes only 17 μA.
- What is the operating temperature range of the ADM809? The operating temperature range is −40°C to +150°C.
- What types of packages are available for the ADM809? The ADM809 is available in SOT-23 and SC70 packages.
- Is the reset output of the ADM809 active high or active low? The reset output of the ADM809 is active low.
- What is the minimum VCC voltage at which the reset output remains operational? The reset output remains operational with VCC as low as 1 V.
- Does the ADM809 have built-in glitch immunity? Yes, the ADM809 has built-in glitch immunity to protect against fast transients on VCC.
- What are some common applications of the ADM809? Common applications include microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
- What is the junction temperature range of the ADM809? The junction temperature range is −40°C to +150°C.
