LMV842MM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: The LMV842MM/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 voltage signal processing circuits.

Characteristics: - Low voltage operation: The LMV842MM/NOPB operates from a single supply voltage as low as 2.7V, making it suitable for battery-powered applications. - Rail-to-rail output: The amplifier can swing its output voltage close to both the positive and negative supply rails, maximizing the dynamic range of the amplified signal. - Low input offset voltage: The LMV842MM/NOPB has a low input offset voltage, ensuring accurate amplification of small signals. - Low quiescent current: The amplifier consumes minimal current when not actively amplifying signals, reducing power consumption in portable devices. - Small package: The LMV842MM/NOPB is available in a miniature 8-pin VSSOP package, saving board space in compact designs.

Package and Quantity: The LMV842MM/NOPB is supplied in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Offset Voltage: ±1mV (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Slew Rate: 0.6V/µs (typical)
• Quiescent Current: 500µA (typical)
• Output Current: 40mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LMV842MM/NOPB features an 8-pin VSSOP package with the following pin configuration:

```

---

| | --| V- OUT |-- --| V+ IN- |-- --| GND IN+ |-- --| NC VCC|-- --| NC NC |-- --| NC NC |-- --| NC NC |-- |___________| ```

Functional Features

1. Rail-to-rail output swing: The LMV842MM/NOPB can drive signals close to the supply rails, allowing for maximum signal range.
2. Low input offset voltage: Ensures accurate amplification of small signals without significant distortion.
3. Low quiescent current: Minimizes power consumption in battery-powered applications, extending battery life.
4. Wide operating temperature range: The amplifier can operate reliably in extreme temperature conditions.
5. High output current capability: The LMV842MM/NOPB can deliver up to 40mA of output current, enabling it to drive low impedance loads.

Advantages and Disadvantages

Advantages: - Low voltage operation suitable for battery-powered applications - Rail-to-rail output swing for maximum signal range - Small package size saves board space - Low input offset voltage ensures accurate amplification of small signals

Disadvantages: - Limited gain bandwidth product compared to higher-end operational amplifiers - Lower slew rate compared to high-speed amplifiers

Working Principles

The LMV842MM/NOPB is a voltage amplifier that amplifies the difference between its two input terminals. It operates by using an internal circuitry that compares the voltages at the inputs and amplifies the resulting difference. The amplified output is then available at the OUT pin.

Application Field Plans

The LMV842MM/NOPB can be used in various applications, including: 1. Audio amplification: The amplifier can be used to amplify audio signals in portable devices, headphones, and small speakers. 2. Sensor signal conditioning: It can be employed to amplify and condition low voltage signals from sensors such as temperature sensors, pressure sensors, and light sensors. 3. Battery-powered systems: The LMV842MM/NOPB's low voltage operation and low quiescent current make it suitable for battery-powered applications, such as handheld devices, remote controls, and wireless communication devices.

Alternative Models

1. LMV841MM/NOPB: Similar to the LMV842MM/NOPB but with a single operational amplifier instead of dual.
2. LMV844MM/NOPB: Similar to the LMV842MM/NOPB but with quad operational amplifiers instead of dual.

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

In conclusion, the LMV842MM/NOPB is a versatile operational amplifier suitable for low voltage applications. Its rail-to-rail output swing, low input offset voltage, and low quiescent current make it an excellent choice for various signal processing circuits.