NJU7001D

Series:	--
Packaging:	Tube
Part Status:	Active
Amplifier Type:	General Purpose
Number of Circuits:	1
Output Type:	--
Slew Rate:	0.05 V/µs
Gain Bandwidth Product:	100kHz
Current - Input Bias:	1pA
Voltage - Input Offset:	10mV
Current - Supply:	15µA
Voltage - Supply, Single/Dual (±):	1 V ~ 16 V
Operating Temperature:	-20°C ~ 75°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-DIP

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NJU7001D application field and working principle

NJU7001D is a low voltage, single supply, precision instrumentation amplifier (configurable as a dual or quad device), which can be used in a wide variety of applications such as signal conditioning and medical instrumentation. It is an ideal choice for medical, telecom and industrial applications where low voltage supplies, precision and high accuracy are needed.The NJU7001D is a low voltage, single supply instrumentation amplifier with very low quiescent current and excellent PSRR (Power supply rejection ratio). Due to its low input offset voltage, the NJU7001D does not need calibration and its output drift with temperature is minimized. The NJU7001D also features high accuracy with a gain accuracy of 0.02% and effective PSRR of up to 60dB at 1kHz. It is also short circuit protected and has ESD protection up to 8kV.The NJU7001D is designed to amplify small signals with high accuracy and low noise. Its wideband noise is extremely low, with 0.1μVrms (10Hz to 100kHz), and its low distortion THD is at <0.01%. The low input bias current is usually only in the region of a few pA, and it has a wide input signal common mode range from ground to VCC-1V. The device has two signal inputs, a non-inverting (VIN+) and an inverting (VIN-), and a reference input (VREF). The signal inputs are protected against ESD up to ±8kV (human body model).The NJU7001D can be configured in a number of ways to suit the needs of the application. It can be used as a buffer amplifier or low-noise buffer amplifier, or as an instrumentation amplifier. The amplifier is also available in dual and quad packages, so it can be used to create a high performance multiplexer.The NJU7001D is suitable for a variety of applications, including medical, telecom, and industrial instrumentation, data acquisition and control. It can also be used to amplify small signals in audio applications such as hearing aids, sound systems and multimedia systems. In addition, it is commonly used in seismology and bridge transducers, as well as other sensor applications.The working principle of NJU7001D is based on the simple circuit configuration of an instrumentation amplifier. The instrumentation amplifier consists of three operational amplifiers, or op amps, connected in a chain. The input signal is applied to the non-inverting input of the first op amp, and the output of the first op amp is fed to the inverting input of the second op amp. The output of the second op amp is then connected to the non-inverting input of the third op amp. All three op amps are connected together at their output, forming a unity gain buffer, which gives the instrumentation amplifier its gain.The instrumentation amplifier has one adjustable gain, called the differential gain, which determines the overall gain of the amplifier. This gain is set using an external resistor and capacitor that are connected to the three op amps at their non-inverting inputs. The resistor and capacitor form a voltage divider, so that the voltage at their junction is proportional to the differential gain.The NJU7001D also features adjustable precision gain and a choice of voltage or current output modes, both of which are set with external resistors. The gain is adjustable between 0dB and 100dB, and the output mode can be switched between voltage and current, according to the application. By choosing the appropriate resistor values, the NJU7001D can be tailored to the needs of the application. In summary, the NJU7001D is a low voltage, single supply precision instrumentation amplifier that is suitable for a wide variety of applications. It has very low quiescent current and excellent power supply rejection ratio, as well as high accuracy and low distortion. The device can be configured as a buffer amplifier or an instrumentation amplifier, and it is available in dual and quad device packages. Additionally, the NJU7001D features adjustable gain and voltage or current output modes.

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