ADM709LARZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Precision, Low Power Consumption
• Package: 8-Lead SOIC (Small Outline Integrated Circuit)
• Essence: Monitors and controls the voltage level in electronic systems to ensure proper operation and prevent damage.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 4.38V, 4.63V, 4.75V, 4.88V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typical)

Detailed Pin Configuration

The ADM709LARZ has the following pin configuration:

1. VCC: Supply Voltage Input
2. GND: Ground
3. RESET: Active-Low Reset Output
4. MR: Manual Reset Input
5. CT: Capacitor Connection for Reset Timeout
6. TH: Threshold Voltage Selection Input
7. NC: No Connection
8. NC: No Connection

Functional Features

• Monitors the supply voltage and asserts the reset output when it falls below the threshold voltage.
• Provides a manual reset input for immediate system reset.
• Allows adjustment of the reset timeout period to suit specific application requirements.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring helps prevent system malfunction or damage. - Low power consumption extends battery life in portable devices. - Adjustable reset timeout period offers flexibility for different applications.

Disadvantages: - Limited threshold voltage options may not cover all voltage monitoring requirements. - No connection pins may occupy space on the PCB without providing additional functionality.

Working Principles

The ADM709LARZ operates by continuously monitoring the supply voltage. When the voltage falls below the selected threshold voltage, the reset output is asserted, indicating a low-voltage condition. The reset output remains active until the voltage rises above the threshold and the reset timeout period elapses. The manual reset input allows immediate system reset, overriding the voltage monitoring.

Detailed Application Field Plans

The ADM709LARZ finds applications in various electronic systems where voltage supervision is critical. Some potential application fields include:

1. Microcontrollers: Ensuring proper operation by monitoring the supply voltage and initiating a reset if necessary.
2. Industrial Control Systems: Preventing damage to sensitive components by monitoring voltage levels and triggering appropriate actions.
3. Automotive Electronics: Protecting vehicle electronics from voltage fluctuations and ensuring reliable operation.
4. Power Management Systems: Monitoring power supply voltages to prevent system failures and optimize energy efficiency.

Detailed and Complete Alternative Models

1. ADM708LARZ: Similar to ADM709LARZ but with a fixed threshold voltage of 4.63V.
2. ADM810LARTZ: Voltage supervisor with a push-pull output and adjustable reset timeout period.
3. MAX809L: Low-power microprocessor reset circuit with a fixed threshold voltage of 2.93V.

(Note: This list is not exhaustive and other alternative models may exist.)

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