ADM693AR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Generator
• Characteristics: Low Power, Precision Monitoring, Adjustable Reset Timeout
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Available in reels or tubes, quantity depends on supplier.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 4.63V, 4.38V
• Reset Timeout Period Options: 140ms, 280ms, 560ms, 1120ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typical)

Detailed Pin Configuration

1. VCC: Supply Voltage Input
2. GND: Ground
3. MR: Manual Reset Input
4. RESET: Reset Output
5. RESET TIMEOUT: Reset Timeout Selection
6. RESET THRESHOLD: Reset Threshold Voltage Selection
7. GND: Ground
8. VCC: Supply Voltage Input

Functional Features

• Monitors the voltage level of the power supply continuously.
• Generates a reset signal when the voltage falls below the selected threshold.
• Provides an adjustable reset timeout period.
• Allows manual reset through the MR pin.
• Low power consumption for energy-efficient applications.

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Adjustable reset threshold and timeout provide flexibility in different applications.
• Precision monitoring ensures reliable operation.
• Low quiescent current minimizes power consumption.
• Small package size saves board space.

Disadvantages

• Limited reset threshold and timeout options compared to some other models.
• Not suitable for high-voltage applications.

Working Principles

The ADM693AR is designed to monitor the voltage level of a power supply. It compares the supply voltage with the selected threshold voltage. When the supply voltage falls below the threshold, the reset output is activated. The reset signal remains active until the supply voltage rises above the threshold or a manual reset is triggered through the MR pin. The reset timeout period can be adjusted according to the application requirements.

Detailed Application Field Plans

• Battery-powered devices: The ADM693AR ensures proper functioning by monitoring the battery voltage and generating a reset signal when it drops below a certain level.
• Microcontroller systems: It provides a reliable reset mechanism to ensure the microcontroller starts in a known state after power-up or brownout conditions.
• Industrial control systems: The IC helps maintain system integrity by resetting the system when the power supply voltage becomes unstable.

Detailed and Complete Alternative Models

1. MAX809: Voltage Monitor and Reset Generator with similar features and package options.
2. LTC2937: Precision Voltage Monitor and Reset Circuit with additional programmable features.
3. TPS3808: Supply Voltage Supervisor with adjustable reset threshold and timeout options.

(Note: This list is not exhaustive and there are several other alternative models available in the market.)

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