NJM2059D

Series:	--
Packaging:	Tube
Part Status:	Active
Amplifier Type:	General Purpose
Number of Circuits:	4
Output Type:	--
Slew Rate:	2 V/µs
Gain Bandwidth Product:	6MHz
Current - Input Bias:	20nA
Voltage - Input Offset:	500µV
Current - Supply:	7mA
Voltage - Supply, Single/Dual (±):	±4 V ~ 18 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	14-DIP
Supplier Device Package:	14-DIP

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NJM2059D Application Field and Working Principle

NJM2059D is a dual low-noise JFET-input Operational Amplifier (Op-Amp) typically used in linear applications such as instrumentation, high-impedance input buffering, high-speed signal processing and filtering, and high-precision AC/DC dynamic measurements.

Principle of Operation

NJM2059D is based on a classical two-stage operational amplifier topology, with a single-pole, two-position differential amplifier on the input and a cascode slew-rate controlled amplifier on the output. The input stage is a JFET differential input stage capable of providing low offset voltage, low voltage noise and an input impedance of greater than 1012 ohms. The options for supply voltage range from ±5V up to ±15V. The NJM2059D differential input stage is designed to be used with junction field effect transistors (JFETs) for high input impedance and low noise characteristics. The input stage is powered by ±5 volts with respect to the Common (or Common Mode) and is arranged with resistors for voltage division, current division, and biasing the JFETs.The output stage is a SR-controlled amplifier with a single transistor current source at the output, designed to provide wide bandwidth and fast slew rate. Its output voltage swing is limited mainly by power supply headroom and supply rail voltage, and relatively low output current capabilities.

Features and Benefits

NJM2059D offers low offset voltage, low voltage noise and high input impedance in a small package. Its low input bias current provides excellent low power operations while maintaining high linearity. Its slew rate control and low noise features reduce signal distortion and eliminate outliers. Its dual-channel Op-Amp architecture allows for increased flexibility in applications such as instrumentation and signal processing.The high input impedance of NJM2059D ensures its low power consumption, making it suitable for portable applications and for high-impedance signal inputs. Its high linearity and high open-loop gain make it suitable for accurate signal processing. In addition, its small size and low power consumption makes it ideal for system integration in complex designs.

Applications

NJM2059D is designed for a wide range applications including instrumentation, audio and video equipment, medical instruments, filtering and signal conditioning, automotive applications and operational amplifiers. It is a perfect choice for multiplexers, signal averaging, audio mixing and level monitoring, medical instrumentation, medical oscillographs, medical electrocardiographs, medical pulse analyzers, motor control, voltage regulation and temperature measurement applications.Instrumentation applications such as signal matching, signal conditioning, amplifier drive, temperature control and signal isolation can be achieved using NJM2059D. Its high signal-to-noise ratio and low distortion characteristics make it the ideal choice for signal conditioning and amplifier drive. Its wide bandwidth, fast slew rate and low noise features make it suitable for medical applications such as medical signal conditioning, medical signal isolation and medical instrumentation. Its dual-channel design and low power consumption make it ideal for audio, video and automotive systems.

Conclusion

NJM2059D is a versatile dual low-noise JFET-input Operational Amplifier designed for linear applications in instrumentation, high-impedance input buffering, high-speed signal processing and filtering, and high-precision AC/DC dynamic measurements. It has low offset voltage, low voltage noise and high input impedance, making it perfect for instrumentation, audio and video equipment, medical instruments, and automotive applications. Its small size and low power consumption make it ideal for system integration in complex designs.

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