LMV821SQ3T2G

Product Overview

Category: Integrated Circuit (IC)

Use: LMV821SQ3T2G 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 LMV821SQ3T2G operates at a supply voltage as low as 1.8V, making it suitable for battery-powered devices. - Low power consumption: With a quiescent current of only 20µA, the LMV821SQ3T2G helps to extend battery life in portable applications. - Rail-to-rail input and output: This operational amplifier can accept and deliver signals that span the entire supply voltage range, allowing for maximum dynamic range. - Small package size: The LMV821SQ3T2G is available in a tiny SOT-23-5 package, making it ideal for space-constrained designs. - High gain bandwidth product: With a gain bandwidth product of 1 MHz, the LMV821SQ3T2G can handle a wide range of signal frequencies.

Package and Quantity: The LMV821SQ3T2G is typically sold in reels or tubes containing 3000 units per package.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Quiescent Current: 20µA
• Input Offset Voltage: ±1mV
• Gain Bandwidth Product: 1MHz
• Slew Rate: 0.6V/µs
• Input Common Mode Voltage Range: -0.1V to VDD+0.1V
• Output Voltage Swing: Rail-to-Rail
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LMV821SQ3T2G has a standard 5-pin SOT-23 package with the following pin configuration:

____ VDD | | IN- | | IN+ | | OUT | | GND |____|

Functional Features

1. Low voltage operation allows for compatibility with battery-powered devices.
2. Low power consumption helps to extend battery life in portable applications.
3. Rail-to-rail input and output capability enables maximum dynamic range.
4. Small package size makes it suitable for space-constrained designs.
5. High gain bandwidth product ensures accurate signal amplification across a wide frequency range.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows for versatile use in various applications. - Low quiescent current minimizes power consumption. - Rail-to-rail input and output capability provides maximum signal handling capability. - Small package size enables compact circuit designs. - High gain bandwidth product ensures accurate signal amplification.

Disadvantages: - Limited output current capability may not be suitable for driving heavy loads. - Single operational amplifier configuration limits flexibility in complex circuit designs.

Working Principles

The LMV821SQ3T2G is based on a differential input stage followed by a single-ended output stage. It utilizes a combination of transistors, resistors, and capacitors to amplify and process analog signals. The differential input stage provides high input impedance and common-mode rejection, while the output stage delivers a rail-to-rail output swing.

Application Field Plans

The LMV821SQ3T2G can be used in various application fields, including but not limited to: 1. Portable audio devices: Provides low-power audio amplification for headphones or speakers. 2. Sensor signal conditioning: Amplifies and processes weak sensor signals for further processing. 3. Battery-powered instrumentation: Enables low-power signal amplification in portable measurement devices. 4. Low-power analog signal processing circuits: Suitable for various low-power analog signal conditioning and processing applications.

Alternative Models

1. LMV822SQ3T2G: Dual operational amplifier with similar characteristics and pin configuration.
2. LMV824SQ3T2G: Quad operational amplifier with similar characteristics and pin configuration.
3. LMV831SQ3T2G: Higher gain bandwidth product operational amplifier with similar characteristics and pin configuration.

These alternative models provide options for different circuit requirements and performance specifications.

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