Overview
The LMV931MFX is a single-channel, low-voltage, rail-to-rail operational amplifier (Op Amp) manufactured by Texas Instruments. This device is part of the LMV93x series, known for its high performance and versatility in various applications. The LMV931MFX operates on a single supply voltage ranging from 1.8 V to 5.5 V, making it suitable for a wide range of electronic systems. It features a high gain-bandwidth product, low input offset voltage, and high common-mode rejection ratio, ensuring reliable and accurate signal processing.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | 25°C | 1 | 4 | 6 | mV |
| Input Offset Voltage Average Drift (TCVOS) | Full Range | 5.5 | μV/°C | ||
| Input Bias Current (IB) | 25°C | 15 | 35 | 50 | nA |
| Input Offset Current (IOS) | 25°C | 8 | 25 | 40 | nA |
| Supply Current (per channel) (IS) | 25°C | 103 | 185 | 205 | μA |
| Common-Mode Rejection Ratio (CMRR) | 0 ≤ VCM ≤ 0.6 V, 1.4 V ≤ VCM ≤ 1.8 V | 60 | 78 | 55 | dB |
| Power Supply Rejection Ratio (PSRR) | 1.8 V ≤ V+ ≤ 5 V, VCM = 0.5 V | 50 | 70 | 50 | dB |
| Large Signal Voltage Gain (AV) | RL = 600 Ω, VO = 0.2 V to 1.6 V, VCM = 0.5 V | 77 | 101 | 73 | dB |
| Total Harmonic Distortion (THD) | f = 1 kHz, AV = +1, RL = 600 Ω, VIN = 1 VPP | 0.023% | % |
Key Features
- Rail-to-Rail Input and Output: The LMV931MFX can operate with input and output voltages that range from the negative supply rail to the positive supply rail, enhancing its versatility in various circuit configurations.
- Low Input Offset Voltage: With a typical input offset voltage of 4 mV, this Op Amp ensures high accuracy in signal processing.
- High Common-Mode Rejection Ratio (CMRR): The device offers a CMRR of up to 78 dB, which is crucial for rejecting common-mode signals and maintaining signal integrity.
- Low Power Consumption: The supply current per channel is typically 185 μA, making it suitable for battery-powered and low-power applications.
- High Gain-Bandwidth Product: The LMV931MFX has a gain-bandwidth product of 1.5 MHz, enabling it to handle high-frequency signals effectively.
Applications
The LMV931MFX is widely used in various electronic systems due to its robust performance and low power consumption. Some of the key applications include:
- Portable Electronics: Suitable for battery-powered devices such as smartphones, tablets, and handheld instruments.
- Industrial Automation: Used in control systems, sensors, and data acquisition systems where high accuracy and reliability are required.
- Medical Devices: Employed in medical equipment such as ECGs, blood glucose meters, and other diagnostic tools.
- Audio Equipment: Utilized in audio amplifiers, mixers, and other audio processing circuits.
Q & A
- What is the operating voltage range of the LMV931MFX?
The LMV931MFX operates on a single supply voltage ranging from 1.8 V to 5.5 V. - What is the typical input offset voltage of the LMV931MFX?
The typical input offset voltage is 4 mV. - What is the common-mode rejection ratio (CMRR) of the LMV931MFX?
The CMRR is up to 78 dB. - What is the supply current per channel for the LMV931MFX?
The supply current per channel is typically 185 μA. - What is the gain-bandwidth product of the LMV931MFX?
The gain-bandwidth product is 1.5 MHz. - What are the key applications of the LMV931MFX?
The LMV931MFX is used in portable electronics, industrial automation, medical devices, and audio equipment. - What is the total harmonic distortion (THD) of the LMV931MFX?
The THD is typically 0.023% at f = 1 kHz, AV = +1, RL = 600 Ω, and VIN = 1 VPP. - What is the input-referred voltage noise of the LMV931MFX?
The input-referred voltage noise is 60 nV/√Hz at f = 10 kHz and VCM = 0.5 V. - Does the LMV931MFX support rail-to-rail input and output?
Yes, the LMV931MFX supports rail-to-rail input and output. - What is the operating temperature range of the LMV931MFX?
The operating temperature range is from -40°C to +125°C.
