Overview
The LMV331M5/MESN from Texas Instruments is a single general-purpose, low-voltage comparator. It is part of the LMV331, LMV393, and LMV339 family, which are low-voltage versions of the traditional LM393 and LM339 comparators. This device operates over a supply voltage range of 2.7 V to 5.5 V, making it suitable for a wide range of applications, especially in modern low-voltage systems. The LMV331 is known for its low supply current, fast response time, and open-drain output, which provides maximum flexibility in circuit design.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC+) | 2.7 | 5.5 | V | ||
| Input Offset Voltage (VIO) | TA = 25°C | 1.7 | 7 | 9 | mV |
| Input Bias Current (IIB) | TA = 25°C | 15 | 250 | 400 | nA |
| Output Current (IO) | VO ≤ 1.5 V, TA = 25°C | 5 | 23 | mA | |
| Saturation Voltage (VSAT) | IO ≤ 1.5 mA, TA = 25°C | 200 | 400 | mV | |
| Propagation Delay (tPHL) | VCC+ = 2.7 V, RL = 5.1 kΩ | 1000 | ns | ||
| Propagation Delay (tPLH) | VCC+ = 2.7 V, RL = 5.1 kΩ | 500 | ns | ||
| Supply Current (ICC) | TA = 25°C | 40 | 100 | 120 | μA |
Key Features
- Low Supply Voltage: Operates from 2.7 V to 5.5 V, making it suitable for low-voltage applications.
- Low Supply Current: Typical supply current of 100 μA at 5 V, contributing to power efficiency.
- Open-Drain Output: Allows for maximum flexibility in circuit design and can be used to enable AND functionality.
- Input Common-Mode Voltage Range: Includes ground, allowing for accurate operation from ground to VCC–Vbe (~700 mV).
- Fast Response Time: Propagation delays as low as 500 ns for high-to-low and low-to-high transitions.
- Low Output Saturation Voltage: Typical saturation voltage of 200 mV, ensuring low voltage drop at the output.
Applications
- Hysteresis Comparators: Used to create hysteresis in comparator circuits to prevent oscillations.
- Oscillators: Can be used in oscillator circuits due to their fast response times.
- Window Comparators: Suitable for window comparator applications where a specific voltage range needs to be monitored.
- Industrial Equipment: Used in various industrial control and monitoring systems.
- Test and Measurement: Employed in test and measurement equipment for voltage comparison and level shifting.
Q & A
- What is the supply voltage range of the LMV331?
The LMV331 operates over a supply voltage range of 2.7 V to 5.5 V. - What is the typical supply current of the LMV331 at 5 V?
The typical supply current is 100 μA at 5 V. - What is the output configuration of the LMV331?
The LMV331 has an open-drain output. - What is the input common-mode voltage range of the LMV331?
The input common-mode voltage range includes ground and extends up to VCC–Vbe (~700 mV). - What are the typical propagation delays of the LMV331?
The typical propagation delays are 1000 ns for high-to-low and 500 ns for low-to-high transitions at VCC+ = 2.7 V. - What is the typical saturation voltage of the LMV331?
The typical saturation voltage is 200 mV. - Can the LMV331 be used in oscillator circuits?
Yes, the LMV331 can be used in oscillator circuits due to its fast response times. - What are some common applications of the LMV331?
Common applications include hysteresis comparators, oscillators, window comparators, industrial equipment, and test and measurement equipment. - How does the open-drain output of the LMV331 provide flexibility?
The open-drain output allows the user to configure the output's logic low voltage (VOL) and can be used to enable AND functionality. - What is the operating temperature range of the LMV331?
The operating temperature range is –40°C to 125°C.
