Overview
The LMV761MFX/NOPB is a single, precision comparator from Texas Instruments, designed for applications requiring low noise and low input offset voltage. This device is part of the LMV761 series and is available in a space-saving 6-Pin SOT-23 package. It features a CMOS input stage and a push-pull output stage, eliminating the need for an external pull-up resistor. The LMV761 is ideal for portable and battery-operated electronics due to its low supply current and high performance characteristics.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | - | 0.2 | 1.0 | 1.0 | mV |
| Input Bias Current (IB) | - | 0.2 | 50 | 50 | pA |
| Common Mode Rejection Ratio (CMRR) | 0V < VCM < VCC - 1.3V | 80 | 100 | 100 | dB |
| Power Supply Rejection Ratio (PSRR) | V+ = 2.7V to 5V | 80 | 110 | 110 | dB |
| Propagation Delay (tPD) | Overdrive = 50mV, RL = 5.1kΩ, CL = 50pF | 120 | - | - | ns |
| Output Rise Time (tr) | 10% to 90% | - | 1.7 | - | ns |
| Output Fall Time (tf) | 90% to 10% | - | 1.8 | - | ns |
| Supply Current (IS) | - | 275 | 700 | 700 | μA |
| Operating Temperature Range | - | -40 | - | 125 | °C |
Key Features
- Low Input Offset Voltage: Typical value of 0.2mV at room temperature and a maximum of 1mV over temperature range.
- Low Supply Current: 275μA typical, making it suitable for battery-powered systems.
- High Speed: Propagation delay of 120ns with an overdrive of 50mV.
- Push-Pull Output Stage: Eliminates the need for an external pull-up resistor.
- Shutdown Pin: Allows the device to be disabled, reducing supply current to 20nA.
- High CMRR and PSRR: Common Mode Rejection Ratio of 100dB and Power Supply Rejection Ratio of 110dB.
- Space-Saving Packages: Available in 6-Pin SOT-23 package.
Applications
- Portable and Battery-Powered Systems: Ideal due to low supply current and high performance.
- Scanners: High speed and precision make it suitable for scanning applications.
- Set Top Boxes: Used in various consumer electronics requiring precision comparators.
- Window Comparators: Suitable for applications requiring multiple comparison thresholds.
- Zero-Crossing Detectors: High speed and precision make it ideal for detecting zero-crossing points.
- High Speed Sampling Circuits: Used in applications requiring fast and accurate signal comparison.
Q & A
- What is the typical input offset voltage of the LMV761?
The typical input offset voltage is 0.2mV at room temperature. - What is the propagation delay of the LMV761?
The propagation delay is 120ns with an overdrive of 50mV. - What is the supply current of the LMV761 in normal operation?
The typical supply current is 275μA. - How does the shutdown pin function on the LMV761?
The shutdown pin disables the device and reduces the supply current to 20nA when driven low. - What are the operating temperature ranges for the LMV761?
The operating temperature range is -40°C to 125°C. - What packages is the LMV761 available in?
The LMV761 is available in a 6-Pin SOT-23 package. - What is the common mode rejection ratio (CMRR) of the LMV761?
The CMRR is 100dB. - What is the power supply rejection ratio (PSRR) of the LMV761?
The PSRR is 110dB. - Is the LMV761 suitable for automotive applications?
No, the LMV761 is not AEC-Q100 qualified; however, the LMV762Q is an automotive-grade version. - What are some typical applications of the LMV761?
Typical applications include portable and battery-powered systems, scanners, set top boxes, window comparators, zero-crossing detectors, and high speed sampling circuits.
