Overview
The ADM8612N110ACBZ-R7 is a voltage supervisory circuit produced by Analog Devices Inc. It is part of the ADM8611/ADM8612/ADM8613/ADM8614/ADM8615 family, designed to monitor power supply voltage levels and ensure code execution integrity in microprocessor-based systems. This device provides power-on reset signals and features an on-chip watchdog timer that can reset the microprocessor if it fails to strobe within a preset timeout period. Additionally, it includes a manual reset input that allows for external reset via a push-button. The ADM8612N110ACBZ-R7 is particularly suited for power efficiency sensitive systems, such as battery-powered portable devices and energy meters, due to its ultralow power consumption.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Operating Temperature Range | -40°C to +85°C | |
| Package Type | 6-Ball WLCSP (Wafer Level Chip Scale Package) | |
| Voltage Monitoring Range | 0.5 V to 1.9 V (20 different levels) | |
| Reset Output Type | Active Low, Open-Drain | |
| Reset Assertion Time | 23 μs to 26 μs (typical) | When monitored voltage falls below threshold |
| Watchdog Timer Period | Base period: tWD - 13% to tWD + 19% sec Extended period: tWD - 13% to tWD + 19% sec (WD_SEL high) | |
| Leakage Current (VWDI = VCC = 5.5 V) | 5 nA | |
| Input Threshold High | 0.9 V | |
| Input Threshold Low | 0.4 V | |
| WDI Pulse Width High | 85 ns | |
| WDI Pulse Width Low | 300 ns | |
| WDI Glitch Rejection | 60 ns | |
| RESET Output Voltage Low (VCC > 4.25 V, ISINK = 6.5 mA) | 0.4 V |
Key Features
- Voltage Monitoring: Monitors power supply voltage levels and asserts a reset signal if the voltage falls below the set threshold.
- Watchdog Timer: Includes an on-chip watchdog timer that resets the microprocessor if it fails to strobe within a preset timeout period.
- Manual Reset: Allows for manual reset via an external push-button.
- Low Power Consumption: Ultralow power consumption, making it suitable for battery-powered devices and energy meters.
- Reset Output: Active low, open-drain reset output ensures quick system reset.
- Input Glitch Filter: Filters out transient glitches on the input pins.
Applications
- Battery-Powered Portable Devices: Ideal for devices requiring low power consumption.
- Energy Meters: Suitable for energy metering applications due to its power efficiency.
- Microprocessor-Based Systems: Ensures code execution integrity and provides power-on reset signals.
- Embedded Systems: Useful in various embedded systems requiring reliable voltage monitoring and reset capabilities.
Q & A
- What is the primary function of the ADM8612N110ACBZ-R7?
The primary function is to monitor power supply voltage levels and ensure code execution integrity in microprocessor-based systems. - What is the operating temperature range of the ADM8612N110ACBZ-R7?
The operating temperature range is -40°C to +85°C. - What types of voltage levels can the ADM8612N110ACBZ-R7 monitor?
The device can monitor 20 different low voltage levels from 0.5 V to 1.9 V. - How does the watchdog timer function in the ADM8612N110ACBZ-R7?
The watchdog timer resets the microprocessor if it fails to strobe within a preset timeout period. - What is the reset output type of the ADM8612N110ACBZ-R7?
The reset output is active low, open-drain. - How quickly does the ADM8612N110ACBZ-R7 assert the reset signal when the monitored voltage falls below the threshold?
The reset signal is asserted within 23 μs to 26 μs (typical). - Does the ADM8612N110ACBZ-R7 have a manual reset feature?
Yes, it allows for manual reset via an external push-button. - Why is the ADM8612N110ACBZ-R7 suitable for battery-powered devices?
It is suitable due to its ultralow power consumption. - What type of package does the ADM8612N110ACBZ-R7 come in?
The device comes in a 6-Ball WLCSP (Wafer Level Chip Scale Package). - What is the purpose of the input glitch filter in the ADM8612N110ACBZ-R7?
The input glitch filter is used to filter out transient glitches on the input pins.
