Overview
The ADCMP391ARZ-RL7, produced by Analog Devices Inc., is a single, rail-to-rail input, low power comparator designed for general-purpose applications. This device operates from a single supply voltage ranging from 2.3 V to 5.5 V and is particularly suited for battery-powered systems due to its low power consumption of 18.6 µA. The comparator features a rail-to-rail common-mode input voltage range, extending 200 mV beyond the supply rails, and a low input offset voltage of 1 mV typical across the full common-mode range. It also includes an undervoltage lockout (UVLO) monitor, ensuring a defined output state upon power-up.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.3 V to 5.5 V | V |
| Supply Current | 18.6 µA | µA |
| Input Offset Voltage (Typical) | 1 mV | mV |
| Common-Mode Input Voltage Range | 200 mV beyond rails | V |
| Operating Temperature Range | −40°C to +125°C | °C |
| Package Type | 8-lead, narrow body SOIC | |
| Output Type | Open-drain | |
| UVLO Threshold | 0.9 V | V |
Key Features
- Single-supply voltage operation: 2.3 V to 5.5 V
- Rail-to-rail common-mode input voltage range extending 200 mV beyond the supply rails
- Low input offset voltage: 1 mV typical
- Low power consumption: 18.6 µA
- Undervoltage lockout (UVLO) monitor ensuring a defined output state upon power-up
- Open-drain output stage requiring an external pull-up resistor
- Operating temperature range: −40°C to +125°C
Applications
- Battery management and monitoring
- Power supply detection
- Window comparators
- Threshold detectors and discriminators
- Microprocessor systems
Q & A
- What is the supply voltage range of the ADCMP391ARZ-RL7?
The supply voltage range is from 2.3 V to 5.5 V.
- What is the typical input offset voltage of the ADCMP391ARZ-RL7?
The typical input offset voltage is 1 mV.
- What is the common-mode input voltage range of the ADCMP391ARZ-RL7?
The common-mode input voltage range extends 200 mV beyond the supply rails.
- What is the operating temperature range of the ADCMP391ARZ-RL7?
The operating temperature range is from −40°C to +125°C.
- What type of output does the ADCMP391ARZ-RL7 have?
The output is of the open-drain type, requiring an external pull-up resistor.
- What is the UVLO threshold voltage for the ADCMP391ARZ-RL7?
The UVLO threshold voltage is 0.9 V.
- What is the typical supply current of the ADCMP391ARZ-RL7?
The typical supply current is 18.6 µA.
- In what package type is the ADCMP391ARZ-RL7 available?
The ADCMP391ARZ-RL7 is available in an 8-lead, narrow body SOIC package.
- What are some common applications of the ADCMP391ARZ-RL7?
Common applications include battery management, power supply detection, window comparators, threshold detectors, and microprocessor systems.
- How does the ADCMP391ARZ-RL7 behave on power-up?
On power-up, when VCC reaches 0.9 V, the ADCMP391ARZ-RL7 is guaranteed to assert an output low logic until the voltage exceeds the UVLO threshold.
