4560D PDF

The NJM integrated circuit is a high-gain, wide. The NJM combines. NJM ideal for active filters, data and telecommunications,. The availability of the.

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So if you are looking for a dual package Operaitional amplifier IC with high-gain and wide bandwidth for audio amplification, then this IC might be the right choice for you.

The NJM is most commonly used as an audio amplifier. Since it has two Op-Amp in a single package it is very convenient to build power amplifier circuits like a subwoofer circuit where the amplified signal of one Op-Amp is supplied to the other Op-Amp for further amplification.

The IC can operate both in single supply or dual supply voltage. Even though an Audio amplifier will have some advantages working with a dual supply voltage, single supply is commonly used because of its simplicity and does not require major change in the circuit.

A very plain single supply non-inverting amplifier is shown below. Biasing the non-Inverting terminal of an Op-Amp gets a bit tricky for amplifier running on single power supply. The most common way to achieve this by using a potential divider as shown above other methods involve using a Zener diode or even using a linear voltage regulator circuit.

Another important thing to consider while building an audio amplifier is the bandwidth of the design. The formulae to calculate the bandwidth at each point in the circuit is already given above. However this simple circuit has potentially serious limitations since the change in supply voltage will also affect the biasing of the Op-Amp and the Common mode noise at the power side will also be amplified. Subscribe to stay updated with industry's latest Electronics components and news.

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