LMV821DBVR

Linear amplifiers are electronic devices used for amplifying a voltage or power signal. LMV821DBVR is an operational amplifier that provides excellent AC and DC performance in a compact design. It is ideal for instrumentation and audio-frequency applications requiring low distortion and low noise.

Overview

The LMV821DBVR is a dual-channel, low-voltage, low-power operational amplifier suitable for a variety of signal amplification applications. This device is manufactured in a miniature 8-lead MSOP or SOIC packages and operates over the voltage range of 1.8 to 5.5V. The LMV821DBVR is capable of handling signal levels as low as 0.2Vpp while providing high open-loop gain and closed-loop gain, low input voltage and current noise, high CMRR, and very low offset voltage.

Features

• Low quiescent current: 10 μA (Typ)
• Low noise: 0.1 μVrms, 1.54 μV/√Hz
• High CMRR: 87 dB (Typ)
• Very low offset voltage: 0.5 mV (Typ)
• Very high open-loop gain: 10 MHz (Typ)
• High input impedance: 10 Gohms

Applications

• Instrumentation amplifiers
• Audio-frequency applications
• Signal conditioning
• Electrical and mechanical transducers
• Voice and audio signal processing

Working Principle

The LMV821DBVR is an internally compensated, class-AB linear amplifying device that provides excellent AC and DC performance in a compact design. The device operates over the voltage range of 1.8 to 5.5V, with an input voltage range of -0.3 to +VCC. It is capable of handling signal levels as low as 0.2Vpp while providing high open-loop gain and closed-loop gain, low input voltage and current noise, and very low offset voltage. The LMV821DBVR features very low noise (0.1 μVrms, 1.54 μV/√Hz), 10 G ohm input impedance, and very high open-loop gain (10 MHz). It also offers up to 87 dB common-mode rejection (CMRR) for high accuracy in input signals.

The LMV821DBVR is capable of biasing current sources and transimpedance amplifiers. It has a very large bandwidth and high slew rate of 10 MHz to provide flat frequency response. It has a low quiescent current of 10 μA and high output drive capability of ±6mA. The device is available in a miniature 8-lead MSOP or SOIC package for low cost and is suitable for a variety of signal conditioning applications including instrumentation amplifiers, audio-frequency applications, and electrical and mechanical transducers.

Conclusion

The LMV821DBVR is an operational amplifier that is best suited for instrumentation and audio-frequency applications requiring low distortion and low noise. It provides excellent AC and DC performance in a compact design, with features such as low noise, high CMRR, low offset voltage, and high open-loop gain. The device is available in a miniature 8-lead MSOP or SOIC package and operates over the voltage range of 1.8 to 5.5V. It is capable of handling signal levels as low as 0.2Vpp and offers up to 87 dB common-mode rejection for high accuracy in input signals. The LMV821DBVR is the ideal solution for a variety of signal conditioning applications.