Overview
The LMV7239M7X/NOPB, produced by Texas Instruments (formerly National Semiconductor), is an ultra-low power, low-voltage comparator. This device is part of the LMV7239 series, which includes the LMV7239 and LMV7235 models. The LMV7239M7X/NOPB operates over a full supply voltage range of 2.7 V to 5.5 V and features a propagation delay of 75 ns while consuming only 65 µA of supply current at 5 V. It is designed for applications requiring low power consumption and high-speed performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (V+ - V−) | 2.7 | 5.5 | V | |
| Propagation Delay (Overdrive = 100 mV, CLOAD = 15 pF) | 75 | ns | ||
| Supply Current (No load) | 52 | 65 | 95 | µA |
| Input Offset Voltage | -6 | ±1 | +6 | mV |
| Input Bias Current | 30 | 400 | 600 | nA |
| Common-Mode Rejection Ratio (CMRR) | 52 | 67 | dB | |
| Power Supply Rejection Ratio (PSRR) | 65 | 85 | dB | |
| Input Common-Mode Voltage Range | V− - 0.2 to V+ + 0.2 | V | ||
| Output Swing High (IL = 4 mA, VID = 500 mV) | V+ - 0.25 | V | ||
| Output Short Circuit Current (Sourcing, VO = 0 V) | 15 | 25 | mA |
Key Features
- Ultra-Low Power Consumption: The LMV7239M7X/NOPB consumes only 65 µA of supply current at 5 V.
- Low Voltage Operation: Operates over a supply voltage range of 2.7 V to 5.5 V.
- High-Speed Performance: Features a propagation delay of 75 ns.
- Rail-to-Rail Input: The input common-mode voltage range extends 200 mV below ground and 200 mV above supply.
- Push-Pull Output Stage: The LMV7239 model features a push-pull output stage, allowing operation without an external pull-up resistor.
- Space-Saving Packages: Available in 5-pin SC70 and 5-pin SOT-23 packages.
Applications
- Portable and Battery-Powered Systems: Ideal for systems where low power consumption is critical.
- Set Top Boxes: Suitable for applications in consumer electronics.
- High-Speed Differential Line Receiver: Used in high-speed signal processing applications.
- Window Comparators: Can be used to create window comparators for monitoring voltage levels.
- Zero-Crossing Detectors: Useful in detecting zero-crossing points in AC signals.
- High-Speed Sampling Circuits: Applicable in high-speed data acquisition systems.
Q & A
- What is the supply voltage range of the LMV7239M7X/NOPB?
The supply voltage range is from 2.7 V to 5.5 V.
- What is the propagation delay of the LMV7239M7X/NOPB?
The propagation delay is 75 ns.
- How much supply current does the LMV7239M7X/NOPB consume at 5 V?
The device consumes 65 µA of supply current at 5 V.
- What is the input common-mode voltage range of the LMV7239M7X/NOPB?
The input common-mode voltage range extends 200 mV below ground and 200 mV above supply.
- What type of output stage does the LMV7239M7X/NOPB feature?
The LMV7239 model features a push-pull output stage.
- In what packages is the LMV7239M7X/NOPB available?
The device is available in 5-pin SC70 and 5-pin SOT-23 packages.
- What are some typical applications of the LMV7239M7X/NOPB?
Typical applications include portable and battery-powered systems, set top boxes, high-speed differential line receivers, window comparators, zero-crossing detectors, and high-speed sampling circuits.
- What is the common-mode rejection ratio (CMRR) of the LMV7239M7X/NOPB?
The CMRR is 52 dB to 67 dB.
- What is the power supply rejection ratio (PSRR) of the LMV7239M7X/NOPB?
The PSRR is 65 dB to 85 dB.
- How does the output swing high of the LMV7239M7X/NOPB behave?
The output swing high is V+ - 0.25 V when IL = 4 mA and VID = 500 mV.
