Overview
The ADCMP394ARZ-RL7, produced by Analog Devices Inc., is a single rail-to-rail input, low power comparator designed for general-purpose applications. This device is particularly suited for battery-powered systems due to its low voltage and low current operation. It operates from a single supply voltage of 2.3 V to 5.5 V and consumes a minimal amount of current, making it ideal for power-sensitive designs.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Supply Voltage Range | VCC | 2.3 | 5.5 | V | ||
| Quiescent Current | ICC | 33.9 | 47.9 | µA | All outputs in high-Z state, VOD = 0.1 V | |
| Undervoltage Lockout (UVLO) Rising | UVLORISE | 2.062 | 2.162 | 2.262 | V | |
| Common-Mode Input Range | VCMR | -200 mV | VCC + 200 mV | |||
| Input Offset Voltage | VOS | 0.5 | 2.5 | mV | INx+ = INx− = 1 V, VCC = 2.3 V, VOD = 100 mV | |
| Operating Temperature Range | TA | -40°C | 125°C | |||
| Package Type | 8-lead, narrow body SOIC |
Key Features
- Low Power Consumption: The ADCMP394ARZ-RL7 consumes only 33.9 µA of supply current, making it suitable for battery-powered systems.
- Rail-to-Rail Input: The comparator features a common-mode input voltage range that extends 200 mV beyond the supply rails.
- Open-Drain Output: The device has an open-drain output stage that requires an external resistor to pull up to the logic high voltage level.
- Undervoltage Lockout (UVLO): Ensures the comparator output is logic low from VCC = 0.9 V to the UVLO threshold.
- Wide Operating Temperature Range: Operates from -40°C to +125°C.
Applications
- Battery Management/Monitoring: Ideal for monitoring battery voltage levels.
- Power Supply Detection: Can be used to detect power supply voltages.
- Window Comparators: Suitable for applications requiring window comparator functions.
- Threshold Detectors/Discriminators: Used in systems that require precise threshold detection.
- Microprocessor Systems: Can be integrated into microprocessor systems for various monitoring and detection tasks.
Q & A
- What is the supply voltage range of the ADCMP394ARZ-RL7?
The supply voltage range is from 2.3 V to 5.5 V. - How much current does the ADCMP394ARZ-RL7 consume?
The device consumes 33.9 µA of supply current when all outputs are in high-Z state. - What is the common-mode input voltage range of the ADCMP394ARZ-RL7?
The common-mode input voltage range extends 200 mV beyond the supply rails. - What type of output stage does the ADCMP394ARZ-RL7 have?
The device has an open-drain output stage. - What is the operating temperature range of the ADCMP394ARZ-RL7?
The operating temperature range is from -40°C to +125°C. - What is the purpose of the undervoltage lockout (UVLO) feature?
The UVLO feature ensures the comparator output is logic low from VCC = 0.9 V to the UVLO threshold. - What package type is the ADCMP394ARZ-RL7 available in?
The device is available in an 8-lead, narrow body SOIC package. - What are some common applications of the ADCMP394ARZ-RL7?
Common applications include battery management, power supply detection, window comparators, threshold detectors, and microprocessor systems. - How does the input offset voltage affect the comparator's performance?
The input offset voltage (VOS) can affect the accuracy of the comparator's output. The ADCMP394ARZ-RL7 has a VOS of 0.5 mV to 2.5 mV. - What is the significance of the hysteresis in the ADCMP394ARZ-RL7?
The hysteresis (UVLOHYS) helps in preventing oscillations and ensures stable operation; it is typically 5 mV to 50 mV.
