Overview
The ADM709SARZ-REEL is a power supply monitor with reset functionality produced by Analog Devices Inc. This integrated circuit is designed to ensure stable operation of microprocessors and other critical systems by monitoring the power supply voltage and generating a reset signal during power-up, power-down, and brownout conditions.
The device is available in an 8-pin SOIC package and features an active-low push-pull reset output. It supports various supply voltage thresholds, making it versatile for different system requirements.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Voltage Threshold | 2.93 V | V | For ADM709S model |
| Quiescent Current | 35 µA | µA | Typical value |
| Power-On Reset Pulse Width | 140 ms (min) | ms | After VCC rises above the threshold |
| Reset Output Voltage | 0.3 V (ISINK = 50 µA, VCC ≥ 1.0 V) | V | Active-low push-pull output |
| Operating Temperature Range | -40°C to +85°C | °C | |
| Package Type | 8-pin SOIC |
Key Features
- Precision Supply Voltage Monitor: Monitors power supply voltages with specific thresholds suitable for +5 V, +3.3 V, and +3 V systems.
- Low Quiescent Current: Consumes only 35 µA of current, making it power-efficient.
- Power-On Reset Pulse: Generates a reset pulse of at least 140 ms after the power supply voltage rises above the threshold.
- Active-Low Push-Pull Reset Output: Ensures reliable reset signaling even at low VCC levels.
- Compact Packaging: Available in 8-pin SOIC packages, suitable for space-constrained designs.
Applications
- Microprocessor Systems: Ensures stable operation of microprocessors during power-up, power-down, and brownout conditions.
- Computers and Controllers: Suitable for monitoring power supplies in computer systems and control units.
- Intelligent Instruments: Used in various intelligent instruments that require reliable power supply monitoring.
- Automotive Systems: Applicable in automotive systems where critical power monitoring is essential).
Q & A
- What is the primary function of the ADM709SARZ-REEL?
The primary function is to monitor the power supply voltage and generate a reset signal during power-up, power-down, and brownout conditions to ensure stable operation of microprocessors and other critical systems.
- What are the available voltage thresholds for the ADM709SARZ-REEL?
The ADM709 series offers various voltage thresholds, including 4.65 V, 4.40 V, 3.08 V, 2.93 V, and 2.63 V, with the ADM709S model specifically having a threshold of 2.93 V.
- What is the quiescent current of the ADM709SARZ-REEL?
The quiescent current is typically 35 µA.
- How long does the power-on reset pulse last?
The power-on reset pulse lasts at least 140 ms after the power supply voltage rises above the threshold.
- What type of reset output does the ADM709SARZ-REEL have?
The device features an active-low push-pull reset output.
- What is the operating temperature range of the ADM709SARZ-REEL?
The operating temperature range is -40°C to +85°C.
- In what package type is the ADM709SARZ-REEL available?
The device is available in an 8-pin SOIC package.
- What are some typical applications of the ADM709SARZ-REEL?
Typical applications include microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
- How does the ADM709SARZ-REEL handle power supply brownouts?
The device initiates a processor reset during power supply brownouts to ensure stable operation.
- Can the ADM709SARZ-REEL operate at low VCC levels?
Yes, the reset output remains operational with VCC as low as 1 V.
