LMV842QMM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LMV842QMM/NOPB is a low-voltage, rail-to-rail output operational amplifier designed for general-purpose applications. It is commonly used in audio amplification, sensor signal conditioning, and other low-power precision applications.

Characteristics: - Low voltage operation: The LMV842QMM/NOPB operates from a single supply voltage as low as 1.8V, making it suitable for battery-powered devices. - Rail-to-rail output swing: It provides an output voltage range that extends close to the supply rails, allowing maximum utilization of the available dynamic range. - Low input offset voltage: The amplifier has a low input offset voltage, ensuring accurate signal amplification. - Low quiescent current: It consumes minimal power, making it ideal for low-power applications. - Small package size: The LMV842QMM/NOPB comes in a miniature 8-pin MSOP package, saving board space.

Package and Quantity: The LMV842QMM/NOPB is available in an 8-pin MSOP package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Input Offset Voltage: ±0.5mV (maximum)
• Gain Bandwidth Product: 2.7MHz (typical)
• Slew Rate: 1.6V/µs (typical)
• Quiescent Current: 50µA (typical)
• Output Current: 40mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LMV842QMM/NOPB features the following pin configuration:

___________ V- | 1 8 | V+ IN-| 2 7 | OUT IN+| 3 6 | NC GND| 4 5 | NC ¯¯¯¯¯¯¯¯¯¯¯

Functional Features

• Rail-to-rail output swing allows for maximum signal range.
• Low input offset voltage ensures accurate amplification of small signals.
• High gain bandwidth product enables the amplifier to handle higher frequency signals.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows for flexibility in various applications. - Rail-to-rail output swing provides maximum utilization of dynamic range. - Low quiescent current makes it ideal for low-power applications. - Small package size saves board space.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Input and output capacitance can affect stability in certain circuit configurations.

Working Principles

The LMV842QMM/NOPB is an operational amplifier that amplifies input signals with high precision. It operates by using a differential input stage followed by a gain stage. The differential input stage provides high common-mode rejection ratio (CMRR) and low input offset voltage. The gain stage amplifies the differential input signal and drives the output stage, which provides rail-to-rail output swing.

Application Field Plans

The LMV842QMM/NOPB can be used in various applications, including: - Audio amplification in portable devices such as smartphones and tablets. - Sensor signal conditioning in industrial automation and control systems. - Signal amplification in medical devices and instrumentation. - Voltage level shifting and buffering in communication systems.

Alternative Models

• LMV841: Single-channel version of the LMV842QMM/NOPB.
• LMV844: Quad-channel version of the LMV842QMM/NOPB.
• LMV831: Low-voltage, rail-to-rail output operational amplifier with lower quiescent current.

These alternative models offer similar functionality and can be considered as substitutes for the LMV842QMM/NOPB in different applications.

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