MAX4070AUA+T

Current - Input Bias:	2.4µA
Base Part Number:	MAX4070
Supplier Device Package:	8-uMAX
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply, Single/Dual (±):	3.6 V ~ 24 V
Current - Supply:	100µA
Voltage - Input Offset:	80µV
Series:	--
-3db Bandwidth:	100kHz
Slew Rate:	--
Output Type:	--
Number of Circuits:	1
Amplifier Type:	Current Sense
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The MAX4070AUA+T is a high-performance, low power amplifier with a variety of application fields. It is especially effective when used in instrumentation, operational amplifiers (Op Amps), and buffer amps. In this article, we will outline the application fields of the MAX4070AUA+T and discuss the working principles behind its performance.

Application Fields

The MAX4070AUA+T is well suited for applications where accurate signals must be amplified with a low noise figure. It can be used as a buffer amplifier for low-level input signals when driving signals into load circuits. Additionally, it has the capability to provide a variable gain for wide frequency signals in multiple application fields. The MAX4070AUA+T is ideal for use in precision instrumentation applications, such as strain gages, pressure transducers, thermocouple amplifiers and other instruments that measure physical parameters. It has a wide input common mode voltage range of 6.8 volts to 60 volts and can handle a minimum operating voltage of 4VDC.The MAX4070AUA+T can also be used as an adjustable output amplifier suitable for use in audio and power stages. Its high output current drive and low distortion performance make it an ideal amplifier for driving transducers and loads.

Working Principle

The MAX4070AUA+T amplifier is a three stage amplifier that uses a single differential transconductance amplifier stage to boost its gain. This stage is followed by a cascode stage and a current regulated output stage. The amplifier has a wide bandwidth of 0.1MHz to 10MHz and an ultra-low noise level of 0.285µVrms. The amplifier is capable of producing an output voltage swing of ± 5V and a slew rate of 15V/µs. It operates on a supply voltage range of +3V to +20V and is protected against overloading and shorts to ground on both its input and output stages. Its slew-rate is programmable up to 100V/µs and the propagation time is adjustable from 0.1µs to 10µs. The MAX4070AUA+T amplifier is designed with a low harmonic distortion performance. It has a signal-to-noise ratio of 87dB with a maximum gain of 130dB. It also has a high input impedance of 100kOhms and a low output impedance of 10Ohms.

Conclusion

The MAX4070AUA+T is a high-performance, low power amplifier with a variety of application fields, specifically well suited for instrumentation, operational amplifiers, and buffer amps. It has a wide bandwidth of 0.1MHz to 10MHz and an ultra-low noise level of 0.285µVrms. It operates on a supply voltage range of +3V to +20V and is protected against overloading and shorts. It also has a high input impedance of 100kOhms and a low output impedance of 10Ohms. The MAX4070AUA+T’s performance is achieved in part through the use of a single differential transconductance amplifier stage, a cascode stage and a current regulated output stage.

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