NJM4559D

Series:	--
Packaging:	Tube
Part Status:	Active
Amplifier Type:	General Purpose
Number of Circuits:	2
Output Type:	--
Slew Rate:	2 V/µs
Gain Bandwidth Product:	6MHz
Current - Input Bias:	25nA
Voltage - Input Offset:	500µV
Current - Supply:	3.5mA
Voltage - Supply, Single/Dual (±):	±4 V ~ 18 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-DIP

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NJM4559D application field and working principle

NJM4559D is a high-performance dual operational amplifier that has wide application in linear amplifiers, instrumentation amplifiers, buffer amplifiers, and many other integrated circuit (IC) applications. Its salient features include high-bandwidth, high-slew rate, low-voltage operation, low-supply current, excellent output settling time, and rail/rail inputs. It is suitable for use in amplifying audio signals, controlling heating/cooling systems, and handling parametric measurements.The NJM4559D is based on a dual Op Amp with two internal transistors at the inputs and two output transistors. This dual op-amp configuration ensures more stable operation, low input noise, and higher speed than single-operational amplifiers.In terms of applications, the NJM4559D is generally used as a linear amplifier. It can also be used in instrumentation amplifiers, as well as buffer amplifiers. As a linear amplifier, the NJM4559D can amplify a wide range of input signals, both analog and digital. In an instrumentation amplifier, the NJM4559D can be used as an active filter, adjusting or controlling gain and phase, as well as providing immunity from electrical noise. As a buffer, the NJM4559D can provide isolation from external load, reduce external load capacitance, and stabilize the output current and voltage.Regarding the working principle of the NJM4559D, the first stage of the Op Amp is a differential amplifier. This amplifier provides gains to the input signals. The second stage is an output buffer stage. In this stage, voltage and current can be switched by an external control. Also, the power transistors at this stage provide stability to the output signals by adding a stabilization layer. The ground connection of the NJM4559D is located between the two transistors. This ground connection helps reduce output noise and provide better performance of the Op Amp.When the NJM4559D is connected to a power supply, the input signals are received through the differential amplifier. In the differential amplifier, the two transistors adjust the input signal and convert it into a single-ended output.Finally, the output buffer stage helps amplify the differential output and sends it to the output terminal. The transistors in the output buffer stage also ensure stability and accuracy in the output.To summarize, the NJM4559D dual Op Amp is a powerful, low-voltage and high-speed linear amplifier. It can be used in various applications such as linear amplification, instrumentation amplifiers, and buffer amplifiers. It works on the principle of differential amplifier and output buffer stage. Furthermore, it is capable of handling current and voltage in a very stable manner.

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