NJM4560 Dual OP-AMP: Datasheet, Equivalent and Circuit

NJM4560 Pinout

NJM4560 Footprint

The NJM4560 integrated circuit is a high-gain, wide bandwidth, dual operational amplifier capable of driving 20V peak-to-peak into 400Ω loads. The NJM4560 combines many of the features of the NJM4558 as well as providing the capability of wider bandwidth, and a higher slew rate makes the NJM4560 ideal for active filters, data and telecommunications, and many instrumentation applications. The availability of the NJM4560 in the surface-mounted micro-package allows the NJM4560 to be used in critical applications requiring very high packing densities.

Supply Voltage: 4-18V

Power Dissipation: mW

Bandwidth: 10 MHz typically

Offset voltage 0.5V

Offset Current: nA

Voltage Gain: 100 dB

CMRR: 90 (typically)

Speaker impedance 4Ω

Available in 8-Pin DIP, DMP,SOP and SIP packages

• AM and FM Radio amplifiers

• Portable music players

• Low Power Audio amplifiers

• Wien bridge oscillator

• Power Amplifiers

• Audio boosters

NJM4560 Equivalent Circuit

The NJM4560 is a Dual Operational Amplifier IC, which means it has two Op-Amps. Due to their wide bandwidth gain, they are often used for audio amplification. It can drive loads up to 400 watts with a peak to peak voltage of 20 volts. It has a good input impedance of 5M and a 100dB voltage gain, making it suitable for distortion circuits.

The most typical application for the NJM4560 is as an audio amplifier. Because it has two Op-Amps in a single package, it is very easy to construct power amplifier circuits such as a subwoofer circuit, in which the amplified signal from one Op-Amp is fed to the other Op-Amp for further amplification. The IC may work with either a single or dual supply voltage. Although working with a dual supply voltage has some advantages for audio amplifiers, a single supply is more usually employed due to its simplicity and lack of major circuit changes. The circuit below shows a simple single-supply non-inverting amplifier.

How to use NJM4560

When using a single power source, biasing the non-inverting terminal of an Op-Amp might be difficult. The most popular method is to use a potential divider like the one illustrated above. Other options include utilizing a Zener diode or even a linear voltage regulator circuit.

Another factor to consider while creating an audio amplifier is the design's bandwidth. The formulas for calculating bandwidth at each point in the circuit have already been provided. However, the change in supply voltage will impact the biasing of the Op-Amp, and the common-mode noise on the power side will be magnified, making this simple circuit potentially dangerous.

New Japan Radio Company ("NJRC", Tokyo, Japan), established in 1959, as a joint venture between Japan Radio Company ("JRC", Tokyo, Japan) and the Raytheon Company,is one of the world's largest producers of Bipolar and CMOS Linear ICs.it has been publicly traded on the Tokyo stock exchange in Japan since 1991 and In 2003, it moved to level 1 in the Tokyo stock exchange. As the North American subsidiary of New Japan Radio Company, NJR Corporation/NJRC ("NJR", San Jose, CA)is responsible for all sales and product support to customers located in the US, Canada, Mexico and Latin America.