Overview
The LMV641 is a low-power, wide-bandwidth operational amplifier designed by Texas Instruments. It operates within an extended power supply voltage range of 2.7 V to 12 V, making it versatile for various applications. The device is unity-gain stable with a gain bandwidth product of 10 MHz and operates on a typical supply current of 138 µA. It features a rail-to-rail output stage and a common mode input voltage that includes the negative supply. The LMV641 is available in space-saving packages such as 5-Pin SC70, SOT-23, and 8-Pin SOIC, and it operates over a temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VOS (Input Offset Voltage) | TA = 25°C | 5 | 500 | 750 | µV |
| IB (Input Bias Current) | TA = 25°C | 70 | 90 | 105 | nA |
| IOS (Input Offset Current) | TA = 25°C | 0.7 | 5 | nA | |
| CMRR (Common-Mode Rejection Ratio) | 0 V ≤ VCM ≤ 9 V, TA = 25°C | 94 | 120 | 90 | dB |
| PSRR (Power Supply Rejection Ratio) | 2.7 V ≤ V+ ≤ 10 V, VCM = 0.5 V, TA = 25°C | 94.5 | 105 | 92.5 | dB |
| GBW (Gain Bandwidth Product) | TA = 25°C | 10 | MHz | ||
| en (Input-Referred Voltage Noise) | f = 1 kHz | 14 | nV/√Hz | ||
| THD (Total Harmonic Distortion) | f = 1 kHz, AV = 2, RL = 2 kΩ | 0.002% | % | ||
| Temperature Range | −40°C | 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 voltage range of the LMV641? The LMV641 operates within a voltage range of 2.7 V to 12 V.
- What is the typical supply current of the LMV641? The typical supply current is 138 µA.
- What is the gain bandwidth product of the LMV641? The gain bandwidth product is 10 MHz.
- What is the maximum input offset voltage of the LMV641? The maximum input offset voltage is 500 µV.
- What is the common-mode rejection ratio (CMRR) of the LMV641? The CMRR is 120 dB.
- What is the power supply rejection ratio (PSRR) of the LMV641? 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 (THD) of the LMV641 at 1 kHz and 2 kΩ load? The THD is 0.002%.
- What are the available packages for the LMV641? The LMV641 is available in 5-Pin SC70, SOT-23, and 8-Pin SOIC packages.
- What is the temperature range of the LMV641? The temperature range is −40°C to +125°C.
