Overview
The LMV951MKX/NOPB is a low-voltage operational amplifier produced by Texas Instruments (formerly National Semiconductor). This device is designed to operate at supply voltages as low as 0.9 V and up to 3 V, making it highly versatile for various low-voltage applications. The LMV951 features a unique internal charge pump that enables full rail-to-rail input and output operation, eliminating the need for external voltage boosting.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 0.9 | - | 3 | V |
| Input Offset Voltage (VOS) | 1.5 | 2.8 | 3 | mV |
| Input Bias Current (IB) | 32 | 67 | 80 | nA |
| Common-Mode Rejection Ratio (CMRR) | 70 | 85 | 92 | dB |
| Power Supply Rejection Ratio (PSRR) | 65 | 80 | 85 | dB |
| Bandwidth | - | 2.7 | - | MHz |
| Sourcing Current | 35 | 45 | - | mA |
| Sinking Current | 35 | 45 | - | mA |
| Shutdown Current | 0.3 | 2.2 | 10 | μA |
| Temperature Range | -40 | - | 125 | °C |
Key Features
- Operates at supply voltages from 0.9 V to 3 V with specified performance at 1 V and 1.8 V single supply.
- Shutdown mode reduces supply current to less than 50 nA.
- Rail-to-rail input and output with zero crossover.
- No input bias current reversal over the common-mode range.
- High output drive capability: sourcing up to 45 mA and sinking up to 35 mA.
- Buffered output stage providing high gain bandwidth product of 2.7 MHz.
- Wide input common-mode range extending to both power supply rails.
- Low noise: input-referred voltage noise of 25 nV/√Hz and input-referred current noise of 0.2 pA/√Hz at 1 kHz.
Applications
- Battery-operated systems.
- Battery monitoring and management.
- Supply current monitoring.
- Low-voltage audio and signal processing.
- Portable and handheld devices.
Q & A
- What is the minimum supply voltage for the LMV951? The minimum supply voltage is 0.9 V.
- What is the maximum temperature range for the LMV951? The temperature range is from -40°C to 125°C.
- How much current can the LMV951 source and sink? The LMV951 can source up to 45 mA and sink up to 35 mA.
- What is the gain bandwidth product of the LMV951? The gain bandwidth product is 2.7 MHz.
- Does the LMV951 have a shutdown feature? Yes, the LMV951 has a shutdown mode that reduces the supply current to less than 50 nA.
- What is the input-referred voltage noise of the LMV951? The input-referred voltage noise is 25 nV/√Hz at 1 kHz.
- Is the LMV951 suitable for battery-operated systems? Yes, it is highly suitable due to its low-voltage operation and low power consumption.
- What is the common-mode rejection ratio (CMRR) of the LMV951? The CMRR is typically 85 dB.
- Can the LMV951 operate with rail-to-rail input and output? Yes, it features rail-to-rail input and output with zero crossover.
- What is the power supply rejection ratio (PSRR) of the LMV951? The PSRR is typically 80 dB.
