Overview
The LMV641 is a low-power, wide-bandwidth operational amplifier produced by Texas Instruments. It is designed to operate over a broad temperature range of –40°C to +125°C and is available in compact packages such as the 5-Pin SC70, SOT-23, and 8-Pin SOIC. This amplifier features a high gain bandwidth product of 10 MHz and unity gain stability, making it suitable for a variety of applications requiring low power consumption and high performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2.7 V to 12 V | V |
| Power Supply Current | 138 µA | µA |
| Unity Gain Bandwidth | 10 MHz | MHz |
| Max Input Offset Voltage | 500 µV | µV |
| CMRR | 120 dB | dB |
| PSRR | 105 dB | dB |
| Input Referred Voltage Noise | 14 nV/√Hz | nV/√Hz |
| 1/f Corner Frequency | 4 Hz | Hz |
| Output Swing With 2-kΩ Load | 40 mV from Rail | mV |
| Total Harmonic Distortion | 0.002% at 1 kHz, 2 kΩ | % |
| Temperature Range | –40°C to 125°C | °C |
Key Features
- Specified for 2.7-V and ±5-V performance
- Low power supply current: 138 µA
- High unity gain bandwidth: 10 MHz
- Max input offset voltage: 500 µV
- CMRR: 120 dB
- PSRR: 105 dB
- Input referred voltage noise: 14 nV/√Hz
- 1/f corner frequency: 4 Hz
- Output swing with 2-kΩ load: 40 mV from rail
- Total harmonic distortion: 0.002% at 1 kHz, 2 kΩ
- Rail-to-rail output stage and common mode input voltage including the negative supply
Applications
- Portable equipment
- Battery-powered systems
- Sensors and instrumentation
Q & A
- What is the operating temperature range of the LMV641?
The LMV641 operates over a temperature range of –40°C to +125°C. - What are the available package options for the LMV641?
The LMV641 is available in 5-Pin SC70, SOT-23, and 8-Pin SOIC packages. - What is the supply voltage range of the LMV641?
The supply voltage range is from 2.7 V to 12 V. - What is the typical power supply current of the LMV641?
The typical power supply current is 138 µA. - What is the unity gain bandwidth of the LMV641?
The unity gain bandwidth is 10 MHz. - What is the maximum input offset voltage of the LMV641?
The maximum input offset voltage is 500 µV. - What are the CMRR and PSRR values of the LMV641?
The CMRR is 120 dB, and the PSRR is 105 dB. - What is the input referred voltage noise of the LMV641?
The input referred voltage noise is 14 nV/√Hz. - What is the total harmonic distortion of the LMV641 at 1 kHz with a 2-kΩ load?
The total harmonic distortion is 0.002% at 1 kHz with a 2-kΩ load. - Is the LMV641 suitable for battery-powered systems?
Yes, the LMV641 is suitable for battery-powered systems due to its low power consumption.
