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ADM690AARMZ
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ADM690AARMZ

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Monitor and Reset Generator
  • Characteristics:
    • Monitors the power supply voltage of a system
    • Generates a reset signal when the voltage falls below a specified threshold
    • Helps prevent system malfunction due to low voltage conditions
  • Package: SOIC-8 (Small Outline Integrated Circuit)
  • Essence: Voltage monitoring and reset generation
  • Packaging/Quantity: Comes in a reel with 2500 pieces

Specifications

  • Supply Voltage Range: 1.2V to 5.5V
  • Threshold Voltage Options: 2.93V, 3.08V, 4.63V, or adjustable
  • Reset Timeout Period: 140ms (typical)
  • Operating Temperature Range: -40°C to +85°C
  • Output Type: Active Low
  • Quiescent Current: 20µA (typical)

Detailed Pin Configuration

The ADM690AARMZ has the following pin configuration:

  1. VCC: Power supply input
  2. GND: Ground reference
  3. MR: Manual reset input (active low)
  4. RESET: Reset output (active low)
  5. GND: Ground reference
  6. TH: Threshold voltage selection pin
  7. CT: Capacitor connection for reset timeout period adjustment
  8. VCC: Power supply input

Functional Features

  • Voltage Monitoring: The ADM690AARMZ continuously monitors the power supply voltage.
  • Reset Generation: When the voltage falls below the threshold level, the ADM690AARMZ generates a reset signal.
  • Manual Reset: The manual reset input allows for an external reset signal to override the voltage monitoring.
  • Adjustable Threshold: The threshold voltage can be set using the TH pin or preconfigured options can be selected.
  • Reset Timeout: The reset signal remains active for a fixed timeout period to ensure proper system recovery.

Advantages and Disadvantages

Advantages: - Provides reliable voltage monitoring and reset generation - Adjustable threshold voltage allows flexibility in different applications - Low quiescent current minimizes power consumption - Small package size enables space-efficient designs

Disadvantages: - Limited threshold voltage options may not suit all voltage monitoring requirements - Fixed reset timeout period may not be suitable for all system recovery times

Working Principles

The ADM690AARMZ operates by comparing the power supply voltage with the selected threshold voltage. When the voltage falls below the threshold, the reset output is activated, indicating a low voltage condition. The reset signal remains active for the specified timeout period, allowing the system to recover. The manual reset input can override the voltage monitoring and force a reset signal.

Detailed Application Field Plans

The ADM690AARMZ is commonly used in various electronic systems where voltage monitoring and reset generation are critical. Some application fields include:

  1. Microcontrollers: Ensuring proper operation by monitoring the power supply voltage and generating a reset signal when necessary.
  2. Industrial Control Systems: Preventing system malfunction due to low voltage conditions and providing reliable reset functionality.
  3. Automotive Electronics: Monitoring the battery voltage and initiating a reset if the voltage drops below a certain level.
  4. Power Management Systems: Safeguarding sensitive components by monitoring the power supply voltage and triggering a reset if needed.

Detailed and Complete Alternative Models

  1. ADM708ARZ: Similar voltage monitor and reset generator IC with adjustable threshold voltage and longer reset timeout period.
  2. MAX809R: Voltage monitor and reset generator IC with fixed threshold voltage options and shorter reset timeout period.
  3. MCP131T: Programmable voltage monitor and reset generator IC with adjustable threshold voltage and configurable reset timeout period.

(Note: These alternative models are provided as examples and may have different specifications and pin configurations. It is recommended to refer to the respective datasheets for detailed information.)

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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von ADM690AARMZ in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of ADM690AARMZ in technical solutions:

  1. Q: What is ADM690AARMZ? A: ADM690AARMZ is a supervisory circuit designed to monitor the power supply voltage levels and reset microprocessors or other digital logic systems during power-up, power-down, or brownout conditions.

  2. Q: What is the operating voltage range for ADM690AARMZ? A: The operating voltage range for ADM690AARMZ is typically between 2.7V and 5.5V.

  3. Q: How does ADM690AARMZ detect power supply voltage levels? A: ADM690AARMZ uses a precision voltage reference and comparators to monitor the power supply voltage levels.

  4. Q: Can ADM690AARMZ be used with both positive and negative voltage supplies? A: No, ADM690AARMZ is designed to work with positive voltage supplies only.

  5. Q: What is the purpose of the watchdog timer feature in ADM690AARMZ? A: The watchdog timer feature in ADM690AARMZ ensures that the microprocessor or digital logic system is functioning properly by periodically resetting it if no activity is detected within a specified time period.

  6. Q: Can I adjust the timeout period of the watchdog timer in ADM690AARMZ? A: Yes, the timeout period of the watchdog timer can be adjusted using external timing components.

  7. Q: Does ADM690AARMZ have a manual reset input? A: Yes, ADM690AARMZ has a manual reset input that allows an external signal to force a reset.

  8. Q: Is ADM690AARMZ capable of generating a power-on reset signal? A: Yes, ADM690AARMZ generates a power-on reset signal when the power supply voltage rises above a specified threshold.

  9. Q: Can ADM690AARMZ tolerate voltage transients or spikes? A: Yes, ADM690AARMZ has built-in glitch immunity to tolerate voltage transients or spikes.

  10. Q: What is the package type of ADM690AARMZ? A: ADM690AARMZ is available in an 8-lead MSOP (Mini Small Outline Package) package.