LMV821IDCKRG4

Product Overview

Category: Integrated Circuit (IC)

Use: LMV821IDCKRG4 is a low voltage, low power operational amplifier designed for general-purpose applications. It is commonly used in audio amplification, sensor signal conditioning, and other low-power analog signal processing circuits.

Characteristics: - Low voltage operation: The LMV821IDCKRG4 operates from a single supply voltage as low as 1.8V, making it suitable for battery-powered devices. - Low power consumption: With a quiescent current of only 25µA, the LMV821IDCKRG4 minimizes power consumption, extending battery life in portable applications. - Rail-to-rail input and output: This operational amplifier can accept and deliver signals that are close to the supply rails, allowing for maximum dynamic range and flexibility in signal processing. - Small package: The LMV821IDCKRG4 comes in a small SOT-23-5 package, which is ideal for space-constrained designs.

Package/Quantity: The LMV821IDCKRG4 is available in a reel packaging with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Input Offset Voltage: ±1mV (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Input Bias Current: 10nA (typical)
• Output Current: 30mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LMV821IDCKRG4 has a standard pin configuration with the following pin assignments:

1. V- (Inverting Input)
2. V+ (Non-Inverting Input)
3. Vout (Output)
4. NC (No Connection)
5. GND (Ground)

Functional Features

• Low input offset voltage: The LMV821IDCKRG4 has a low input offset voltage, ensuring accurate signal amplification and conditioning.
• Rail-to-rail input and output: This feature allows the amplifier to handle signals that extend from the lowest to the highest supply voltage levels, maximizing the dynamic range of the circuit.
• Unity-gain stable: The operational amplifier is designed to be stable at unity gain, making it suitable for applications where high gain accuracy is required.
• Low power consumption: With its low quiescent current, the LMV821IDCKRG4 minimizes power consumption, making it ideal for battery-powered devices.

Advantages and Disadvantages

Advantages: - Low voltage operation enables use in battery-powered devices. - Small package size allows for space-constrained designs. - Rail-to-rail input and output provides maximum signal processing flexibility. - Low power consumption extends battery life.

Disadvantages: - Limited gain bandwidth product compared to higher-performance operational amplifiers. - Input and output swing limitations due to rail-to-rail operation.

Working Principles

The LMV821IDCKRG4 is based on a differential amplifier configuration, which amplifies the voltage difference between its two input terminals. It utilizes a combination of active and passive components to achieve the desired amplification characteristics. The operational amplifier's internal circuitry is designed to provide high gain, low distortion, and stability across a wide range of operating conditions.

Detailed Application Field Plans

The LMV821IDCKRG4 can be used in various application fields, including but not limited to: 1. Audio amplification: The operational amplifier can be employed in audio systems to amplify weak audio signals from microphones or other sources. 2. Sensor signal conditioning: It can be utilized to condition and amplify signals from sensors such as temperature sensors, pressure sensors, or light sensors. 3. Portable devices: The low voltage operation and low power consumption make it suitable for battery-powered portable devices, such as smartphones, tablets, and wearable devices.

Detailed and Complete Alternative Models

1. LMV321IDCKR: This is a single-channel operational amplifier with similar characteristics to the LMV821IDCKRG4 but in a different package (SOT-23-5).
2. LMV358IDCKR: A dual-channel operational amplifier with rail-to-rail input and output capabilities, suitable for applications requiring multiple amplification channels.
3. LMV324IDCKR: A quad-channel operational amplifier that provides four independent amplification channels in a small SOT-23-14 package.

These alternative models offer similar functionality and characteristics to the LMV821IDCKRG4, providing flexibility in choosing the most suitable operational amplifier for specific design requirements.

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