Overview
The LMV7239M7X is an ultra-low power, low voltage comparator integrated circuit manufactured by Texas Instruments, which acquired National Semiconductor. This device is part of the LMV7235 and LMV7239 series, known for their high performance and efficiency in low-power applications.
The LMV7239 operates over a full supply voltage range of 2.7 V to 5.5 V, making it suitable for a variety of single-supply applications. It features a propagation delay of 75 ns and a low supply current of 65 µA at 5 V, ensuring both fast response times and energy efficiency.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Supply Voltage Range | - | 2.7 | 5.5 | V |
| Propagation Delay | 75 | 89 | 96 | ns |
| Supply Current | 65 | 52 | 95 | µA |
| Input Offset Voltage | ±0.8 | -6 | +6 | mV |
| Input Bias Current | 400 | 30 | 600 | nA |
| Common-Mode Rejection Ratio (CMRR) | 62 | 52 | 67 | dB |
| Power Supply Rejection Ratio (PSRR) | 85 | 65 | 85 | dB |
| Operating Temperature Range | - | -40 | 85 | °C |
| Output Type | Push-Pull | - | - | - |
| Package Type | SC-70-5, SOT-23-5 | - | - | - |
Key Features
- Ultra-Low Power Consumption: The LMV7239 has a low quiescent current of 65 µA at 5 V, making it energy-efficient and suitable for power-sensitive applications.
- Low Voltage Operation: Operates over a supply voltage range of 2.7 V to 5.5 V, ideal for low-power and battery-operated devices.
- Rail-to-Rail Input and Output: Supports input and output voltage ranges that extend 200 mV below ground and 200 mV above the supply voltage, allowing for sensing close to the supply rails.
- Fast Response Time: Features a propagation delay of 75 ns, enabling quick detection and response to input signal changes.
- Push-Pull Output Stage: The LMV7239 has a push-pull output stage, eliminating the need for an external pull-up resistor.
- Wide Temperature Range: Operates over a temperature range of -40°C to 85°C, making it suitable for industrial and automotive applications.
- Space-Saving Packages: Available in 5-pin SC70 and 5-pin SOT-23 packages, ideal for systems where small size and low power are critical.
Applications
- Battery-Powered Devices: Suitable for portable electronics, wireless sensors, and remote controls due to its low voltage and low power consumption.
- Signal Conditioning: Can be used for level shifting, threshold detection, and window comparators.
- Motor Control: Used in motor control circuits for overcurrent protection, speed control, and position sensing.
- Industrial Automation: Suitable for monitoring and control applications such as limit switches, proximity sensors, and voltage monitoring.
- Automotive Electronics: Used in applications like battery voltage monitoring, seat position sensing, and door lock control due to its wide temperature range and low power consumption.
Q & A
- What is the supply voltage range of the LMV7239?
The LMV7239 operates over a supply voltage range of 2.7 V to 5.5 V.
- What is the propagation delay of the LMV7239?
The propagation delay of the LMV7239 is 75 ns.
- What is the typical supply current of the LMV7239?
The typical supply current of the LMV7239 is 65 µA at 5 V.
- Does the LMV7239 have rail-to-rail input and output capabilities?
Yes, the LMV7239 supports rail-to-rail input and output voltage ranges.
- What type of output stage does the LMV7239 have?
The LMV7239 features a push-pull output stage.
- What are the available package types for the LMV7239?
The LMV7239 is available in 5-pin SC70 and 5-pin SOT-23 packages.
- What is the operating temperature range of the LMV7239?
The LMV7239 operates over a temperature range of -40°C to 85°C.
- Is the LMV7239 suitable for automotive applications?
Yes, the LMV7239 is suitable for automotive applications due to its wide temperature range and low power consumption.
- Can the LMV7239 be used in signal conditioning applications?
Yes, the LMV7239 can be used for signal conditioning applications such as level shifting and threshold detection.
- What is the common-mode rejection ratio (CMRR) of the LMV7239?
The CMRR of the LMV7239 is typically 62 dB.
