LMV321Q3M5X/NOPB

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LMV321Q3M5X/NOPB Application Field and Working Principle

The LMV321Q3M5X/NOPB is a high precision, low power, single supply operation amplifier. It can be used in a wide range of analog front-end applications and integrated circuits including instrumentation, op amps and buffer amps.

What is the LMV321Q3M5X/NOPB?

The LMV321Q3M5X/NOPB is an improved linear, single supply P-Channel MOSFET input operational amplifier specially designed for audio and power management applications. It is an ideal choice for automotive and industrial audio applications, thanks to its low cost, high performance and easy to integrate features. It features a low supply voltage range of 1.8V to 9V and an output offset voltage of 135uV maximum, with a maximum output voltage of 4.2V in single supply operation. It also offers a wide bandwidth of 3.2MHz and a voltage gain of 25dB at 30kHz.The LMV321Q3M5X/NOPB has a wide operating temperature range, from -40°C to +125°C, and a low power consumption, with consuming only 500uA per channel when operating at 5V.

LMV321Q3M5X/NOPB Application Fields

The LMV321Q3M5X/NOPB is a versatile operational amplifier that can be used in a wide range of analog front-end applications, such as medical and portable instrumentation, industrial control systems, sensor conditioning, and audio circuitry.It is often used in audio preamplifiers, audio power amplifiers, instrumentation, low-level signal extensions, in-circuit test instruments, power management, and many other applications.

LMV321Q3M5X/NOPB Working Principle

The LMV321Q3M5X/NOPB amplifies an input signal with a gain or amplification factor. It has a voltage gain of 25dB, with a typical input bias current of 0.1nA and a typical common-mode rejection ratio (CMRR) of 76dB. It can operate using either a single supply or dual supplies.The Input signal is applied to the two input terminals, where it is then compared against a reference potential. The output is the amplified version of the input signal, with the gain determined by the ratio of the two resistors connected to the output terminal.For single-supply operation, the amplifier has an adjustable quiescent current capability, allowing it to operate efficiently within its given power range. This feature helps to ensure better power efficiency and low noise levels, optimal for precision audio applications. It also features over-temperature protection and thermal shut down for additional reliability.The LMV321Q3M5X/NOPB is also designed for fast-settling time and wide-bandwidth operation. This helps it to respond quickly and accurately to input signals, which is essential for audio applications.

Conclusion

The LMV321Q3M5X/NOPB is a high performance, low power, single-supply operational amplifier that is suitable for a wide range of analog front-end applications, such as audio preamplifiers, audio power amplifiers, instrumentation, low-level signal extensions, in-circuit test instruments, power management, and many other applications. It features a low supply voltage range of 1.8V to 9V and an output offset voltage of 135uV maximum, with a maximum output voltage of 4.2V in single-supply operation. It also offers a wide bandwidth of 3.2MHz and a voltage gain of 25dB at 30kHz. The amplifier has an adjustable quiescent current capability, allowing it to operate efficiently within its given power range, as well as over-temperature protection and thermal shut down for additional reliability.

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