ADM8691ARU

Product Overview

Category

ADM8691ARU belongs to the category of integrated circuits (ICs).

Use

The ADM8691ARU is commonly used in electronic devices for voltage monitoring and power supply sequencing.

Characteristics

• Voltage monitoring: The ADM8691ARU can monitor multiple voltage levels simultaneously.
• Power supply sequencing: It ensures that different power supplies are turned on/off in a specific order.
• Package: The ADM8691ARU comes in a small outline integrated circuit (SOIC) package.
• Essence: This IC provides accurate voltage monitoring and power sequencing capabilities.
• Packaging/Quantity: The ADM8691ARU is typically sold in reels containing a specified quantity of units.

Specifications

The specifications of ADM8691ARU include:

• Supply voltage range: 2.7V to 5.5V
• Number of monitored voltages: 4
• Voltage threshold accuracy: ±1.5%
• Power-on reset timeout: Programmable
• Power sequencing delay: Programmable
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The ADM8691ARU has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. MR: Master reset input
4. RESET: Reset output
5. VIN1: Voltage input 1
6. VIN2: Voltage input 2
7. VIN3: Voltage input 3
8. VIN4: Voltage input 4

Functional Features

The functional features of ADM8691ARU include:

• Voltage monitoring: Monitors the voltage levels of multiple inputs.
• Power sequencing: Controls the sequence in which power supplies are turned on/off.
• Programmability: Allows users to set power-on reset timeout and power sequencing delay.
• Reset output: Provides a reset signal to the system when voltage levels are outside the specified range.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring for multiple inputs.
• Programmable power-on reset timeout and power sequencing delay.
• Small package size for space-constrained applications.

Disadvantages

• Limited number of monitored voltages (4 inputs).
• Requires additional external components for complete power supply sequencing.

Working Principles

The ADM8691ARU operates by continuously monitoring the voltage levels of the input pins. It compares these levels with the programmed threshold values. If any voltage falls outside the specified range, the IC generates a reset signal to initiate a system reset. Additionally, it controls the power sequencing by enabling or disabling the power supplies in a predetermined order.

Detailed Application Field Plans

The ADM8691ARU finds applications in various electronic devices where voltage monitoring and power sequencing are critical. Some specific application fields include:

1. Server systems: Ensures proper power-up and shutdown sequence of different server components.
2. Industrial automation: Monitors voltage levels in control systems to prevent damage due to improper power supply.
3. Telecommunications equipment: Facilitates reliable power sequencing in telecom infrastructure devices.
4. Automotive electronics: Controls the power-on sequence of automotive modules to avoid potential malfunctions.

Detailed and Complete Alternative Models

Some alternative models to ADM8691ARU that offer similar functionality include:

1. MAX16046: Integrated circuit voltage monitor and sequencer.
2. LTC2937: Quad supply monitor and sequencer.
3. TPS3840: Voltage supervisor and sequencer.

These alternative models provide comparable features and can be considered as substitutes for ADM8691ARU in specific applications.

Word count: 420 words