ADM8691ARNZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Precision monitoring, low power consumption, small package size
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Provides voltage monitoring and reset generation functions for microcontrollers and other digital systems.
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 4.63V, or adjustable
• Reset Timeout Period: 140ms or 1120ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VCC: Supply voltage input
2. GND: Ground reference
3. MR: Manual reset input
4. RESET: Active-low reset output
5. RESET#: Active-high reset output
6. CT: Capacitor connection for reset timeout period
7. TH: Threshold voltage selection pin
8. NC: No connection

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below a specified threshold.
• Provides both active-low and active-high reset outputs for flexibility in system design.
• Offers a manual reset input for immediate system reset.
• Adjustable reset threshold voltage option allows customization based on specific application requirements.
• Reset timeout period can be selected to ensure proper system recovery after a voltage drop.

Advantages

• High precision voltage monitoring ensures reliable system operation.
• Low power consumption extends battery life in portable devices.
• Small package size saves board space and simplifies integration into compact designs.
• Flexible reset output options accommodate various microcontroller and digital system configurations.

Disadvantages

• Limited number of threshold voltage options may not meet the needs of all applications.
• Lack of additional features such as power-on reset delay or watchdog timer functionality.

Working Principles

The ADM8691ARNZ operates by continuously monitoring the supply voltage using an internal voltage reference and comparator. When the voltage falls below the programmed threshold, the reset output is activated, signaling a system reset. The reset signal remains active until the voltage rises above the threshold or the reset timeout period elapses. The manual reset input allows for immediate system reset regardless of the voltage level.

Detailed Application Field Plans

The ADM8691ARNZ is widely used in various applications where reliable voltage monitoring and system reset functions are critical. Some common application fields include:

1. Microcontroller-based systems
2. Industrial control systems
3. Automotive electronics
4. Medical devices
5. Power management systems

Detailed and Complete Alternative Models

1. ADM809: Similar voltage supervisor IC with adjustable reset threshold and various package options.
2. MAX809: Voltage monitor with adjustable reset threshold and additional features like power-on reset delay.
3. TPS3808: Precision voltage supervisor with adjustable threshold and integrated watchdog timer.

These alternative models offer similar functionalities to the ADM8691ARNZ and can be considered based on specific application requirements.

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