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MAX690ACSA
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MAX690ACSA

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Monitor and Reset Circuit
  • Characteristics: Low-power, precision voltage monitor with a built-in watchdog timer
  • Package: 8-pin Small Outline Integrated Circuit (SOIC)
  • Essence: Provides accurate monitoring and reset capabilities for microprocessors and other digital systems
  • Packaging/Quantity: Available in tubes or reels, quantity depends on the supplier

Specifications

  • Supply Voltage Range: 2.7V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Watchdog Timer Timeout Period: Adjustable from 1.6ms to 6.4s
  • Reset Threshold Voltage: 4.63V (typical)
  • Reset Timeout Period: 140ms (typical)

Pin Configuration

The MAX690ACSA has the following pin configuration:

  1. GND: Ground
  2. RESET: Active-low reset output
  3. VCC: Positive supply voltage
  4. MR: Manual reset input
  5. WDI: Watchdog input
  6. GND: Ground
  7. VCC: Positive supply voltage
  8. RESET: Active-low reset output

Functional Features

  • Voltage Monitoring: Monitors the supply voltage and asserts a reset signal when it falls below a specified threshold.
  • Watchdog Timer: Detects system malfunctions by requiring periodic input pulses and generates a reset if the pulses are not received within the specified timeout period.
  • Manual Reset: Allows the user to manually assert a reset signal.
  • Power-On Reset: Generates a reset signal during power-up to ensure proper initialization of the system.

Advantages and Disadvantages

Advantages: - Low-power consumption - Precision voltage monitoring - Adjustable watchdog timeout period - Manual reset capability

Disadvantages: - Limited number of pins for additional functionalities - Requires an external resistor for watchdog timer adjustment

Working Principles

The MAX690ACSA operates by continuously monitoring the supply voltage and comparing it to a preset threshold. If the voltage falls below the threshold, the reset output is asserted, indicating a power failure or unstable voltage condition. The watchdog timer ensures system integrity by requiring periodic input pulses. If the pulses are not received within the specified timeout period, a reset signal is generated.

Application Field Plans

The MAX690ACSA is commonly used in various applications, including: 1. Microprocessor-based systems 2. Embedded systems 3. Industrial control systems 4. Automotive electronics 5. Power management circuits

Alternative Models

Some alternative models that provide similar functionality to the MAX690ACSA include: 1. MAX691AESA: 8-pin SOIC package, adjustable watchdog timeout period, manual reset input. 2. MAX811SEUS-T: SOT-143 package, fixed watchdog timeout period, push-pull reset output. 3. ADM708TARZ: 8-pin SOIC package, adjustable watchdog timeout period, active-low reset output.

Note: This is not an exhaustive list, and there may be other alternative models available in the market.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de MAX690ACSA en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of MAX690ACSA in technical solutions:

  1. Question: What is MAX690ACSA?
    Answer: MAX690ACSA is a microprocessor supervisory circuit that monitors the power supply voltage of a microcontroller or other digital systems.

  2. Question: What is the purpose of using MAX690ACSA?
    Answer: The purpose of using MAX690ACSA is to ensure proper operation and reliability of the microcontroller by monitoring the power supply voltage and providing reset signals when necessary.

  3. Question: How does MAX690ACSA monitor the power supply voltage?
    Answer: MAX690ACSA continuously compares the power supply voltage with a preset threshold. If the voltage drops below the threshold, it generates a reset signal to restart the microcontroller.

  4. Question: Can MAX690ACSA be used with different microcontrollers?
    Answer: Yes, MAX690ACSA can be used with a wide range of microcontrollers and other digital systems that require voltage monitoring and reset functionality.

  5. Question: What is the operating voltage range of MAX690ACSA?
    Answer: MAX690ACSA operates within a voltage range of 2.7V to 5.5V.

  6. Question: Does MAX690ACSA have any adjustable parameters?
    Answer: Yes, MAX690ACSA has an adjustable reset threshold voltage that can be set using external resistors.

  7. Question: Can MAX690ACSA generate multiple reset signals?
    Answer: No, MAX690ACSA generates a single reset signal when the power supply voltage falls below the threshold.

  8. Question: Is MAX690ACSA suitable for battery-powered applications?
    Answer: Yes, MAX690ACSA is designed to operate efficiently in low-power and battery-powered applications.

  9. Question: Does MAX690ACSA have any additional features?
    Answer: Yes, MAX690ACSA includes a manual reset input and a watchdog timer for added functionality.

  10. Question: Are there any application notes or reference designs available for MAX690ACSA?
    Answer: Yes, Maxim Integrated provides application notes and reference designs that can help in implementing MAX690ACSA in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific requirements and configurations. It is always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.