Overview
The LMV792MMX/NOPB is a dual low-noise, CMOS input operational amplifier produced by Texas Instruments. This device is part of the LMV79x family, which offers optimal performance in low-voltage and low-noise systems. The LMV792 is unity gain stable and features a rail-to-rail output stage, making it suitable for a variety of applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Input Referred Voltage Noise Density | 5.8 | - | - | nV/√Hz |
| Input Bias Current | 100 fA | - | - | fA |
| Unity Gain Bandwidth | 17 MHz | - | - | MHz |
| Supply Voltage Range | - | 1.8 V | 5.5 V | V |
| Supply Current per Channel (Enable Mode) | 1.30 mA | - | - | mA |
| Supply Current per Channel (Shutdown Mode) | 0.02 µA | - | - | µA |
| Output Voltage Swing High | - | 25 mV from rail (2 kΩ load) | 65 mV from rail (2 kΩ load) | mV |
| Output Voltage Swing Low | - | 45 mV from rail (2 kΩ load) | 80 mV from rail (2 kΩ load) | mV |
| Output Current | - | 10 mA (sourcing to V-) | 21 mA (sourcing to V-) | mA |
| Total Harmonic Distortion + Noise | 0.01% | - | - | % |
| Temperature Range | - | -40°C | 125°C | °C |
Key Features
- Low Noise: Input referred voltage noise density of 5.8 nV/√Hz.
- Low Power Consumption: Supply current per channel of 1.30 mA in enable mode and 0.02 µA in shutdown mode.
- CMOS Input Stage: Typical input bias currents in the range of a few femtoamperes.
- Rail-to-Rail Output Swing: Capable of driving a 600-Ω load and sourcing up to 60 mA of current.
- Unity Gain Stable: With a gain bandwidth of 17 MHz.
- Enable Feature: Built-in enable pin to optimize power dissipation in low-power applications.
- Wide Supply Voltage Range: Operates from 1.8 V to 5.5 V.
- High Accuracy: Ensured performance at 2.5 V and 5 V supply voltages.
Applications
- Photodiode Amplifiers: Ideal for transimpedance amplifiers due to low noise and high accuracy.
- Active Filters and Buffers: Suitable for signal processing and filtering applications.
- Low-Noise Signal Processing: Used in systems requiring minimal noise interference.
- Medical Instrumentation: Applicable in medical devices that require high precision and low noise.
- Sensor Interface Applications: Ideal for interfacing with sensors in various industrial and consumer applications.
Q & A
- What is the input referred voltage noise density of the LMV792?
The input referred voltage noise density is 5.8 nV/√Hz.
- What is the typical supply current per channel in enable mode?
The typical supply current per channel in enable mode is 1.30 mA.
- How does the enable feature work on the LMV792?
The enable feature allows the operational amplifier to be disabled by setting the enable pin voltage to less than V− + 0.5 V, reducing power consumption to 0.02 µA per channel.
- What is the gain bandwidth of the LMV792?
The gain bandwidth is 17 MHz.
- What is the output voltage swing of the LMV792?
The output voltage swing is typically within 25 mV to 65 mV from the rail for a 2 kΩ load.
- What is the temperature range for the LMV792?
The temperature range is from -40°C to 125°C.
- What are some common applications of the LMV792?
Common applications include photodiode amplifiers, active filters and buffers, low-noise signal processing, medical instrumentation, and sensor interface applications.
- What is the package type for the LMV792MMX/NOPB?
The LMV792MMX/NOPB is available in a 10-pin VSSOP package.
- How much current can the LMV792 source or sink?
The LMV792 can source up to 60 mA and sink up to 60 mA of current.
- What is the total harmonic distortion + noise of the LMV792?
The total harmonic distortion + noise is 0.01% at 1 kHz with a 600 Ω load.
