Overview
The ADM707ANZ is a microprocessor supervisory circuit produced by Analog Devices Inc. This component is designed to monitor 5 V power supplies and batteries, ensuring reliable operation of microprocessors under various power conditions. It includes features such as power-up, power-down, and brownout detection, as well as independent watchdog monitoring and manual reset capabilities.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range (VCC) | 1.0 | 5.5 | V | ||
| Supply Current | 190 | 250 | µA | VCC = 4.75 V to 5.5 V, TA = TMIN to TMAX | |
| Reset Threshold | 4.5 | 4.65 | 4.75 | V | ADM707 |
| Reset Threshold Hysteresis | 40 | mV | |||
| Reset Pulse Width | 160 | 200 | 280 | ms | |
| Reset Output Voltage (ISOURCE = 800 µA) | 0.4 | V | VCC - 1.5 V | ||
| Watchdog Timeout Period (tWD) | 1.00 | 1.60 | 2.25 | sec | Not applicable for ADM707/ADM708 |
| Manual Reset Input (MR) Pull-Up Current | 100 | 250 | 600 | µA | MR = 0 V |
| Power Fail Input (PFI) Threshold | 1.2 | 1.25 | 1.3 | V |
Key Features
- Power-up, power-down, and brownout detection to ensure reliable microprocessor operation.
- Independent watchdog monitoring circuitry (not available in ADM707/ADM708).
- Active low and active high reset output options.
- Manual reset input with debouncing.
- Power fail input to detect low battery conditions or additional power supplies.
- Available in 8-lead PDIP and 8-lead SOIC packages.
Applications
The ADM707ANZ is suitable for a variety of applications, including:
- Monitoring 5 V power supplies and batteries in microprocessor-based systems.
- Detecting power failures, brownout conditions, and low battery states.
- Ensuring reliable operation in embedded systems, industrial control systems, and medical devices.
- Providing watchdog functionality to prevent system hang-ups (except in ADM707/ADM708 models).
Q & A
- What is the primary function of the ADM707ANZ?
The primary function is to monitor 5 V power supplies and batteries, ensuring reliable operation of microprocessors. - What are the reset threshold levels for the ADM707ANZ?
The reset threshold level is 4.65 V. - Does the ADM707ANZ have a watchdog timer function?
No, the watchdog timer function is not available in the ADM707 and ADM708 models. - What are the package options for the ADM707ANZ?
The component is available in 8-lead PDIP and 8-lead SOIC packages. - What is the purpose of the manual reset input?
The manual reset input allows for a debounced manual reset of the system. - How does the power fail input work?
The power fail input detects low battery conditions or additional power supply states with a threshold of 1.2 V to 1.3 V. - What is the supply current range for the ADM707ANZ?
The supply current range is 190 µA to 250 µA. - Can the reset output operate at low VCC levels?
Yes, the reset output remains operational with VCC as low as 1 V. - Is the ADM707ANZ RoHS compliant?
Yes, the ADM707ANZ is RoHS compliant. - What are some typical applications for the ADM707ANZ?
Typical applications include monitoring power supplies in microprocessor-based systems, detecting power failures, and ensuring reliable operation in embedded and industrial systems.
