Overview
The ADM709LARZ is a precision supply voltage monitor produced by Analog Devices Inc. This component is designed to generate a system reset during power-up, power-down, and brownout conditions, ensuring reliable operation of microprocessor systems. It features an active-low RESET output that holds the microprocessor in reset when the supply voltage (VCC) falls below the reset threshold. The device is particularly useful in applications requiring critical power monitoring.
Key Specifications
| Parameter | Value |
|---|---|
| VCC Operating Voltage Range | 1 to 5.5V (TA=0°C to +70°C) |
| Supply Current | 85µA max (VCC < 3.6 V, TA=0°C to +70°C) |
| Reset Threshold | 4.65V |
| VCC to Active-Low RESET Delay | 20µs typical |
| Active-Low RESET Active Time-Out Period | 380ms max |
| Active-Low RESET Output Voltage | 0.4V (ISINK=3.2mA, VCC=reset threshold min) |
| Temperature Rating Range | -40°C to +85°C |
| Package Type | 8-pin SO (NSOIC) |
Key Features
- Precision supply voltage monitoring with a reset threshold of 4.65V.
- Active-low RESET output that remains operational with VCC as low as 1V.
- Low supply current of 85µA max.
- Fast VCC to active-low RESET delay of 20µs typical.
- Active-low RESET active time-out period of 380ms max.
- Operating temperature range from -40°C to +85°C.
- Compact 8-pin SO (NSOIC) package.
Applications
The ADM709LARZ is suitable for a variety of applications, including microprocessor systems, computers, controllers, intelligent instruments, and automotive systems. It is particularly useful in scenarios requiring critical power monitoring to ensure system reliability and stability.
Q & A
- What is the primary function of the ADM709LARZ? The primary function is to monitor the supply voltage and generate a system reset during power-up, power-down, and brownout conditions.
- What is the reset threshold voltage of the ADM709LARZ? The reset threshold voltage is 4.65V.
- What is the operating voltage range of the ADM709LARZ? The operating voltage range is from 1 to 5.5V.
- How much current does the ADM709LARZ typically consume? The supply current is 85µA max when VCC is less than 3.6V.
- What is the delay time from VCC to active-low RESET? The delay time is 20µs typical.
- What is the active-low RESET active time-out period? The active time-out period is 380ms max.
- At what temperature range can the ADM709LARZ operate? The operating temperature range is from -40°C to +85°C.
- What type of package does the ADM709LARZ come in? The ADM709LARZ comes in an 8-pin SO (NSOIC) package.
- Is the ADM709LARZ suitable for automotive applications? Yes, it is suitable for automotive systems and other critical power monitoring applications.
- Can the active-low RESET output operate at low VCC levels? Yes, the active-low RESET output remains operational with VCC as low as 1V.
