Overview
The ADM697AN is a microprocessor supervisory circuit produced by Analog Devices Inc. This component is designed to provide comprehensive monitoring and control functions for microprocessor systems, including power-on reset, watchdog timer, and power fail detection. It is particularly suited for applications requiring reliable power supply management and battery backup switching.
The ADM697AN is fabricated using an advanced epitaxial CMOS process, ensuring low power consumption and high reliability. It operates over a wide temperature range and can drive output currents up to 100 mA without the need for an external pass transistor.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Type | Voltage Supervisory | ||
| Mounting Style | Through Hole | ||
| Package / Case | PDIP-16 | ||
| Threshold Voltage | 1.3 V | ||
| Number of Inputs Monitored | 1 Input | ||
| Output Type | Active High, Active Low, Push-Pull | ||
| Manual Reset | No Manual Reset | ||
| Watchdog Timers | Watchdog | ||
| Battery Backup Switching | No Backup | ||
| Reset Delay Time | 70 ms | ||
| Supply Voltage - Max | 5.5 V | ||
| Minimum Operating Temperature | -55°C | ||
| Maximum Operating Temperature | +125°C | ||
| Chip Enable Signals | Chip Enable | ||
| Height | 3.3 mm | ||
| Length | 20.07 mm | ||
| Operating Supply Current | 1.95 mA | ||
| Overvoltage Threshold | Adj V | ||
| Power Dissipation | 600 mW | ||
| Power Fail Detection | Yes | ||
| Factory Pack Quantity | 25 | ||
| Supply Voltage - Min | 3 V | ||
| Undervoltage Threshold | Adj V | ||
| Width | 6.35 mm | ||
| Unit Weight | 0.057419 oz |
Key Features
- Single-channel push-pull design
- Monitors up to one voltage level
- Output signal provided when input voltage falls below threshold
- Active high/active low reset with minimum timeout of 35ms
- Operating temperature range: -40°C to 85°C (TA)
- Through-hole mounting on printed circuit boards
- Adjustable reset and watchdog timeout periods
- Power-on reset output during power-up, power-down, and brownout conditions
- Separate watchdog time-out and low line status outputs
- Battery backup switching for CMOS RAM and other low power logic (though the ADM697AN does not include battery backup switching itself)
Applications
- Battery backup circuits
- Power supplies
- DC-DC converters
- Industrial control systems
- Automotive applications
- Aerospace and defense systems
Q & A
- Q: What is the primary function of the ADM697AN?
A: The ADM697AN is a microprocessor supervisory circuit designed to monitor and control power supply functions, including power-on reset, watchdog timer, and power fail detection.
- Q: What is the operating voltage range of the ADM697AN?
A: The ADM697AN operates within a supply voltage range of 3.0 V to 5.5 V.
- Q: What is the maximum operating temperature of the ADM697AN?
A: The maximum operating temperature is +125°C, though the typical operating range is -40°C to 85°C.
- Q: Does the ADM697AN support battery backup switching?
A: No, the ADM697AN does not include battery backup switching. This feature is available in the ADM696 model but not in the ADM697AN.
- Q: How does the watchdog timer function in the ADM697AN?
A: The watchdog timer generates a reset pulse if it has not been toggled within a specified time period, ensuring the system remains in a valid state.
- Q: What is the reset delay time of the ADM697AN?
A: The reset delay time is 70 ms.
- Q: Is the ADM697AN RoHS compliant?
A: No, the ADM697AN is not RoHS compliant.
- Q: What is the typical operating supply current of the ADM697AN?
A: The typical operating supply current is 1.95 mA.
- Q: What kind of output does the ADM697AN provide?
A: The ADM697AN provides active high, active low, and push-pull output types.
- Q: How can I obtain technical support for the ADM697AN?
A: Technical support, including pinout information, application notes, and datasheets, can be obtained from the supplier or directly from Analog Devices Inc..
