ADM809ZAKS-REEL

Product Overview

Category

ADM809ZAKS-REEL belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and supervising the voltage levels in electronic circuits.

Characteristics

• Voltage threshold accuracy: ±1.5%
• Low supply current: 20 µA (typical)
• Power-on reset output delay: 140 ms (typical)
• Manual reset input
• Watchdog timer
• Active-low RESET output

Package

ADM809ZAKS-REEL is available in a SOT-23 package.

Essence

The essence of ADM809ZAKS-REEL lies in its ability to provide accurate voltage monitoring and reset generation in various electronic applications.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a specific quantity of ADM809ZAKS-REEL units.

Specifications

• Supply Voltage Range: 1.2 V to 5.5 V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage Options: 2.93 V, 3.08 V, 3.15 V, 4.38 V, 4.63 V, 4.75 V

Pin Configuration

ADM809ZAKS-REEL has the following pin configuration:

```

---

| | --| RST |-- --| GND |-- --| MR |-- --| VCC |-- |_______| ```

• RST: Reset Output
• GND: Ground
• MR: Manual Reset Input
• VCC: Supply Voltage

Functional Features

1. Voltage Monitoring: ADM809ZAKS-REEL continuously monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
2. Power-On Reset: It provides a power-on reset output delay to ensure stable operation during power-up.
3. Manual Reset Input: The manual reset input allows for external control of the reset function.
4. Watchdog Timer: ADM809ZAKS-REEL includes a watchdog timer that can be used to monitor system activity and generate a reset if necessary.
5. Active-Low RESET Output: The active-low RESET output signal indicates when a reset condition is present.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring
• Low supply current consumption
• Wide operating temperature range
• Manual reset capability
• Watchdog timer for enhanced system reliability

Disadvantages

• Limited reset threshold voltage options
• SOT-23 package may not be suitable for all applications

Working Principles

ADM809ZAKS-REEL operates by comparing the supply voltage with the preset threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a reset condition. The power-on reset delay ensures that the reset output remains active for a specific duration after power-up to allow the system to stabilize.

Detailed Application Field Plans

ADM809ZAKS-REEL finds applications in various electronic systems where accurate voltage monitoring and reset generation are critical. Some potential application fields include:

1. Microcontrollers and microprocessors
2. Embedded systems
3. Power management circuits
4. Industrial control systems
5. Automotive electronics
6. Battery-powered devices

Detailed and Complete Alternative Models

1. ADM803/ADM809: These are similar voltage supervisors from Analog Devices with different package options and additional features such as adjustable reset thresholds.
2. MAX809: A voltage supervisor from Maxim Integrated offering similar functionality and package options.
3. TPS3808: Texas Instruments' voltage supervisor with adjustable reset thresholds and additional features like watchdog timer and manual reset input.

These alternative models provide similar voltage monitoring and reset generation capabilities, allowing users to choose the most suitable option for their specific application requirements.

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