MAX4105EUK+T

Voltage - Input Offset:	1mV
Base Part Number:	MAX4105
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	±3.5 V ~ 5.5 V
Current - Output / Channel:	70mA
Current - Supply:	20mA
Series:	--
Current - Input Bias:	32µA
-3db Bandwidth:	410MHz
Slew Rate:	1400 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	Voltage Feedback
Part Status:	Active
Packaging:	Tape & Reel (TR)

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MAX4105EUK+T Application Field and Working Principle

Introduction

The MAX4105EUK+T is a 2.7V to 5.5V, single, rail-to-rail, high-output-current, low-input-bias-current, JFET-input operational amplifier (op amp). This device operates from a single supply or with dual supplies of ±2.5V to ±5.5V. It has a very low 1/f noise over a wide frequency range. Additionally, the low input bias current and low input offset voltage makes it well-suited for precision instrumentation applications, where high input-referred accuracies are needed. The device also operates with low quiescent current, making it well-suited for battery-powered applications.

Application Field

The MAX4105EUK+T is ideally suited for high output current and low bias current applications, such as:

• Instrumentation Amplifier
• Precision ADC/DAC Converter Interfaces
• High Precision Sensors and Transducers
• Telecommunication Circuits
• Intrinsically Safe Equipment Circuits
• Hand-Held Medical Devices
• Analytical and Imaging Instrumentation
• Guidance Systems

The MAX4105EUK+T is capable of driving loads up to 150mA, and is well-suited for controlling power MOSFET outputs and supplying demanding loads within instrumentation and integration. Its ability to maintain an accurate 4V single-supply output swing with its rail-to-rail output feature makes the device ideal for a variety of voltage buffering and general-purpose applications.

Working Principle

The MAX4105EUK+T is a combination of an input JFET and a high-current output up to 150mA (as well as a low bias current) to make it ideal for precision instrumentation applications. The device is also characterized by a rail-to-rail output, meaning the amplifier\'s output can range from the full weight of the lower supply rail to the full weight of the higher supply rail. This ensures maximum flexibility in power amplifier design.The MAX4105EUK+T utilizes MOSFETs to achieve a low input bias current. This low input bias current allows the device to be stable and precise over extended temperature ranges and also allows for a low voltage offset mismatches. The high output current also allows for direct current-controlled voltage sources (DCSV) which can be used for high precision, low noise instrumentation signals. The low quiescent current makes the MAX4105EUK+T well-suited for battery-powered applications, and its wide frequency response makes it well-suited for filter applications.

Conclusion

The MAX4105EUK+T is a low-input-bias-current and high-output-current JFET-input op amp that is well-suited for precision instrumentation applications, telecommunication circuits, hand-held medical devices, and many other applications. It is capable of driving loads up to 150mA, and can be powered by a single supply or dual supplies of ±2.5V to 5.5V. Its rail-to-rail output ensures maximum flexibility and precision in power amplifier designs, and its low quiescent current and wide frequency response makes it well-suited for filter applications and battery-powered devices.

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