AP1701FWG-7

The AP1701FWG-7 is a supervisor device that offers two outputs: VOLTAGE supervisory and WATCHDOG Timer (WDT) reset. This voltage supervisor is primarily used to detect system anomalies that can cause loss or corruption of critical data. The supervisor offers a reset output whenever an out of tolerance voltage or power field failure is detected.

The device’s primary application field includes embedded systems, medical equipment, industrial controllers, automotive applications, defense networks, and aerospace systems. The supervisor can also be used in other applications that require a Voltage supervisory function.

The AP1701FWG-7 operates on a supply voltage from 2.5V to 5.5V. It comes in a very small form factor, usually an 8-pin, 0.6” wide package which helps minimize board space. It has an adjustable trip point accuracy and is rated to a peak current of 12mA. The supervisor is rated for an operating temperature range of -40°C to +125°C.

The AP1701FWG-7 has a typical operating current of 8.5 uA and is designed to offer a wide voltage range and a good immunity to noisy supply rails. It has both active high and active low reset outputs and also provides an open drain output which enables the use of an external pull-up resistor. The supervisor has an active power-on reset with a typical timeout period of 250 ms.

The AP1701FWG-7 also offers an active low voltage reset and an active high voltage reset modes. The reset de-assertion delay can be adjusted from a minimum of 500 ms to a maximum of 4.5 Seconds. The reset output is held active for a minimum duration of 300 us from the reset signal’s assertion.

At the heart of the AP1701FWG-7 is its Watchdog Timer (WDT) reset circuit. This circuit detects system anomalies that can cause loss or corruption of critical data and issues a reset to recover the system. The WDT reset timings can be variably adjusted to meet a variety of system requirements. The supervisor also has two external WDTCLK inputs which offer a choice between external, or built-in oscillator based WDT reset.

The AP1701FWG-7 is also designed with an internal voltage reference that can be used for reset voltage measurement. This reference is designed to have high output accuracy and low temperature drift. The Low Battery Reset feature can also be used to detect a low supply voltage condition and issue a reset signal.

The AP1701FWG-7 is designed to offer excellent immunity from power field failure. It is designed to detect any sudden drops in the supply voltage that may encountered during power field failure and issue a reset signal. This feature is essential for any embedded system that must remain operational for long periods time.

In summary, the AP1701FWG-7 is a voltage supervisor that is primarily used to detect system anomalies that can cause loss or corruption of critical data. It offers two reset outputs and operates on a supply voltage from 2.5V to 5.5V. The supervisor is recommended for embedded systems, medical equipment, industrial controllers, automotive applications, defense networks, and aerospace systems. It also has a Watchdog Timer (WDT) reset circuit with adjustable timings and an internal voltage reference with high accuracy and low temperature drift. The supervisor is also designed to offer excellent immunity from power field failure.