LM4562NA/NOPB

The LM4562NA/NOPB is a high performance dual audio operational amplifier and both are optimized for low noise, low distortion audio applications. It is designed to provide superior frequency response and linearity, combined with very low noise performance. The LM4562NA/NOPB is the industry’s highest performing device utilizing the Burson family of amplifiers, enabling exceptionally low noise and high linearity performance. With its ability to drive inputs of up to ±15V and its ultra-low distortion, this device is an ideal replacement for traditional instrumentation amplifiers.

The LM4562NA/NOPB can be used in a variety of linear applications such as audio pre-amplifiers, low location noise, low input impedance amplifers and low output impedance buffers. It is perfect for applications such as line-level pre-amplification and instrumentation, professional audio and signal conditioning. This device also features improved power dissipation which is ideal for battery-powered applications. The low noise operation, combined with the low power consumption make it ideal for low voltage and thermal sensitive applications.

The LM4562NA/NOPB is an internally compensated device and uses an advanced feedback compensation technique to achieve a wider overall frequency response, greater stability, better linearity and improved noise performance. This technique minimizes the amount of noise introduced by the external components. It is easy to use as it is comes in an 8 pin dual-in-line package, and provides both electrical and thermal protection. This makes the device robust and reliable.

The operation principle behind the LM4562NA/NOPB is fairly simple. It consists of two input transistors and two class-A gain stages which form a differential amplifier with complementary outputs. The differential amplifier is followed by two voltage-controlled gain stages, which amplify the differential signal to drive both the positive and the negative outputs. This circuit is then powered by dual power supplies providing a power of 4.5V to each amplifier. The power supply voltage is also derived from the buffered supply of the input transistors.

The first class-A gain stage of the LM4562NA/NOPB provides excellent common-mode rejection ratio, low noise and distortion, and low input offset voltage. This results in excellent input noise rejection and high common-mode rejection ratio even at full gain. The second voltage gain stage could be switched in and out of the circuit and is used to finely bias the differential amplifier, allowing it to have the highest open-loop gain available to minimize harmonic distortion.

The LM4562NA/NOPB boasts a wide dynamic range that allows for precision and low noise output. The device is suitable for use in a variety of audio applications as it provides low input bias current, low output impedance and low power consumption. It is also perfect for active filter applications. The low input impedance means it can be used as an input buffer to low impedance sources, such as microphones, and its low output impedance makes it an ideal output driver for high impedance loads.

In conclusion, the LM4562NA/NOPB is an excellent audio operational amplifier for applications such as audio pre-amplifiers, low location noise, low input impedance amplifers and low output impedance buffers. It features advanced feedback compensation techniques, low noise operation, low power consumption and wide dynamic range while maintaining excellent linearity. With its versatile design it is perfect for a wide range of instrumentation, audio and signal conditioning applications.