ADM709RARZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision Monitoring, Reset Output
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Monitors the voltage level of a power supply and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Each package contains one ADM709RARZ IC.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: 2.32V, 2.93V, 3.08V, 4.63V
• Reset Timeout Period: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

ADM709RARZ has the following pin configuration:

1. GND (Ground): Connected to the ground reference of the circuit.
2. RESET (Reset Output): Provides a reset signal when the monitored voltage falls below the threshold.
3. VCC (Supply Voltage): Connected to the positive supply voltage.
4. MR (Manual Reset): Allows manual resetting of the device.
5. TH (Threshold): Determines the voltage threshold for triggering the reset output.
6. CT (Timeout): Sets the timeout period for the reset signal.
7. NC (No Connection): Not connected internally, can be left unconnected.
8. NC (No Connection): Not connected internally, can be left unconnected.

Functional Features

• Monitors the voltage level of a power supply.
• Provides a reset signal when the voltage falls below the threshold.
• Precision monitoring with selectable threshold options.
• Low-power consumption.
• Manual reset option available.
• Adjustable reset timeout period.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring. - Low-power consumption. - Adjustable reset threshold and timeout period. - Manual reset option for flexibility.

Disadvantages: - Limited number of threshold voltage options. - Only available in an 8-pin SOIC package.

Working Principles

ADM709RARZ operates by continuously monitoring the voltage level of the power supply connected to its VCC pin. When the voltage falls below the threshold set by the TH pin, the RESET pin is activated, providing a reset signal to the system. The reset signal remains active for the duration set by the CT pin, after which it is automatically deactivated.

Detailed Application Field Plans

ADM709RARZ finds applications in various fields, including:

1. Microcontrollers: Ensuring reliable operation by monitoring the power supply voltage and initiating a reset if necessary.
2. Industrial Control Systems: Providing voltage supervision to prevent malfunctions or data corruption during power fluctuations.
3. Automotive Electronics: Monitoring the battery voltage and triggering a reset if it drops below a critical level.
4. Power Management: Assisting in power sequencing and ensuring proper startup of electronic systems.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to ADM709RARZ are:

1. MAX809: Voltage Supervisors with Manual Reset and Adjustable Thresholds.
2. LTC2937: Precision Voltage Monitors with Programmable Reset Timeout.
3. TPS3808: Ultra-Low Quiescent Current Voltage Supervisors with Fixed Thresholds.

These alternative models provide comparable features and can be considered as substitutes for ADM709RARZ based on specific application requirements.

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