LM7321MFE/NOPB

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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The LM7321MFE/NOPB is a monolithic integrated circuit that provides an ideal amplifier for general purpose applications, mainly for instrumentation, operational amplifiers (OP amps), and buffer amplifiers. This application note explains the working principle of the LM7321MFE/NOPB and the application field for which it is most suited.

Working Principle

The LM7321MFE/NOPB is a differential-input, low-noise operational amplifier designed for a wide range of voltage and current applications including transducer amplifiers, sample and hold circuits, logarithmic amplifiers, hybrid integrated circuits, and many more. It is a single-supply device that operates off of two symmetrical voltage supplies, e.g. ±6V, ±9V, or ±12V. The differential inputs each have an input offset voltage of 0.1 V which reduces the common mode rejection.

The LM7321MFE/NOPB has a wide gain bandwidth and a wide output voltage swing. The device is capable of driving up to 3k Ω of capacitive load and a peak output current of 25mA. The voltage gain is 90dB, and is normally stable with capacitive loads up to 430pF. The body-biased input stage makes the input bias and offset current predictable and ensures that the input configurations remain stable over time. The low supply current of the LM7321MFE/NOPB increases battery life and reduces power consumption advantages over other similar amplifiers.

The output stage features a class A output stage that optimizes the slew rate and throughput of the amplifier. The wide gain bandwidth enables the LM7321MFE/NOPB to operate with high speed, low distortion. The high output voltage swing and low distortion makes the device suitable for high resolution video applications.

Applications

The LM7321MFE/NOPB is a general-purpose operational amplifier ideally suited for fast settling applications such as audio, communications, instrumentation, and telemetry. The low noise and high-precision output make it ideal for signal conditioning and signal processing in audio, getahead, and telemetry systems. It is also ideal for professional audio and recording systems, video amplifiers, precision gain control, audio level control, and imaging systems.

The LM7321MFE/NOPB is designed for fast settling and high accuracy applications. The operational amplifier has a wide gain-bandwidth and a wide output voltage swing, ensuring higher resolution and better signal-to-noise ratio with reduced distortion. It is suitable for applications where accuracy of the signal is important. It\'s also suitable for applications where a quick response and high accuracy are required, such as in biomedical applications where fast settling times and low distortion are important.

Conclusion

The LM7321MFE/NOPB is a monolithic integrated circuit designed for a wide range of voltage and current applications. It has a wide gain bandwidth, a wide output voltage swing, and low noise that make it an ideal amplifier for general purpose applications, including instrumentation, operational amplifiers (OP Amps), and buffer amplifiers. The LM7321MFE/NOPB is suitable for precision gain control, audio level control, and imaging systems and for fast settling and high accuracy applications, such as audio, communications, instrumentation and telemetry.

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