Overview
The LMV7219M7/NOPB is a high-speed, low-power comparator produced by Texas Instruments. This device is designed to operate within a voltage range of 2.7 V to 5 V and features a propagation delay of just 7 ns, making it ideal for high-speed applications. The LMV7219 includes internal hysteresis to ensure clean output transitions, even with slow-moving input signals. It is available in space-saving packages such as SC-70 and SOT-23, which are suitable for systems where small size and low power consumption are critical.
Key Specifications
| Parameter | Minimum | Typical | Maximum | 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, VCM = 0 V) | 12 | 7 | - | ns |
| Supply Current (V+ = 5 V) | - | 1.1 | - | mA |
| Input Common Mode Voltage Range | -0.2 V below ground | - | 1 V below Vcc | V |
| Rise and Fall Time | - | 1.3 | - | ns |
| Internal Hysteresis | - | 7 mV | - | mV |
Key Features
- Propagation Delay of 7 ns
- Low Supply Current of 1.1 mA at 5 V
- Input Common Mode Voltage Range extends 200 mV below ground
- Ideal for 2.7-V and 5-V single supply applications
- Internal Hysteresis ensures clean switching
- Fast Rise and Fall Time of 1.3 ns
- Available in space-saving SC-70 and SOT-23 packages
- 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 LMV7219?
The LMV7219 operates within a voltage range of 2.7 V to 5 V.
- What is the propagation delay of the LMV7219?
The propagation delay of the LMV7219 is 7 ns.
- What is the supply current of the LMV7219 at 5 V?
The supply current of the LMV7219 at 5 V is 1.1 mA.
- What is the input common mode voltage range of the LMV7219?
The input common mode voltage range extends 200 mV below ground to 1 V below Vcc.
- Does the LMV7219 have internal hysteresis?
- In what packages is the LMV7219 available?
The LMV7219 is available in SC-70 and SOT-23 packages.
- What is the maximum PCB temperature supported by the LMV7219?
The LMV7219 supports a maximum PCB temperature of 105°C.
- What are some typical applications of the LMV7219?
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 LMV7219 help in its operation?
The internal hysteresis ensures clean output transitions by preventing oscillation when input voltages are equal, effectively moving the input out of the region where oscillation occurs.
- What are the layout guidelines for using the LMV7219?
Key layout guidelines include high-speed layout, power supply bypassing with ceramic capacitors, keeping leads short, and using a PC board with a good ground plane.
