Overview
The LMV7219M5, produced by Texas Instruments, is a low-power, high-speed comparator designed for a wide range of applications. This device operates with a single supply voltage ranging from 2.7 V to 5 V and features a push-pull rail-to-rail output. It is characterized by its fast propagation delay of 7 ns and low supply current of 1.1 mA at 5 V. The LMV7219M5 is particularly useful in systems where small size and low power consumption are critical, making it ideal for portable and battery-powered systems.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (V+ - V−) | 2.7 | 5 | V | |
| Ambient Temperature | -40 | 85 | °C | |
| Junction Temperature | 125 | °C | ||
| PCB Temperature | 105 | °C | ||
| Propagation Delay (Overdrive = 5 mV) | 12 | 7 | ns | |
| Supply Current (V+ = 5 V) | 1.1 | mA | ||
| Input Common Mode Voltage Range | -0.2 V below GND | 1 V below Vcc | V | |
| Internal Hysteresis | 7 | mV | ||
| Rise and Fall Time | 1.3 | ns |
Key Features
- Low-power consumption: 1.1 mA supply current at 5 V.
- High-speed operation: 7 ns propagation delay.
- Rail-to-rail output.
- Internal hysteresis: 7 mV to prevent oscillations and ensure clean switching.
- Input common mode voltage range extends 200 mV below ground.
- Fast rise and fall times: 1.3 ns.
- Available in space-saving packages: SC-70 and SOT-23.
- Supports 105°C PCB temperature.
Applications
- Portable and battery-powered systems.
- Scanners.
- Set Top Boxes.
- High Speed Differential Line Receiver.
- Window Comparators.
- Zero-crossing Detectors.
- High-speed Sampling Circuits.
Q & A
- What is the operating voltage range of the LMV7219M5? The LMV7219M5 operates with a single supply voltage ranging from 2.7 V to 5 V.
- What is the propagation delay of the LMV7219M5? The propagation delay is 7 ns.
- How much supply current does the LMV7219M5 consume at 5 V? The supply current is 1.1 mA at 5 V.
- What is the input common mode voltage range of the LMV7219M5? The input common mode voltage range extends 200 mV below ground to 1 V below Vcc.
- Does the LMV7219M5 have internal hysteresis? Yes, it has 7 mV of internal hysteresis.
- In what packages is the LMV7219M5 available? It is available in SC-70 and SOT-23 packages.
- What is the maximum PCB temperature the LMV7219M5 can support? The LMV7219M5 supports up to 105°C PCB temperature.
- What are some typical applications of the LMV7219M5? Typical applications include portable and battery-powered systems, scanners, set top boxes, high-speed differential line receivers, window comparators, zero-crossing detectors, and high-speed sampling circuits.
- How does the internal hysteresis of the LMV7219M5 help in its operation? The internal hysteresis helps in preventing oscillations and ensuring clean switching by creating two distinct trip points for the rising and falling input voltages.
- What are the recommended layout guidelines for using the LMV7219M5? Recommended guidelines include high-speed layout, power supply bypassing with ceramic capacitors, keeping leads short, using a low inductance ground plane, and separating input and output traces.
