EL4501IU

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EL4501IU Application Field and Working Principle

The EL4501IU is an integrated voltage buffer amplifier for signal conditioning and video signal applications. It is designed to simultaneously provide very high resolution signal conditioning and high current output drive capability. It is suitable for applications such as video signal conditioning, audio signal conditioning, and general voltage buffer applications.

Applications

The EL4501IU is designed to be used in a wide variety of video signal conditioning and processing applications. It can be used as an active video amplifier, an active video filter, a two-stage video amplifier, an active video equalizer, a video signal conditioner/attenuator, a video DAC interface, and a video separator/combiner. It can also be used in consumer audio applications like high-quality active speakers and audio amplifiers, and in general signal conditioner and buffer amplifier applications.

Features

The EL4501IU features an integrated wideband voltage buffer amplifier capable of handling up to 20V of differential signal swing. It has a high input impedance of >10MOhms and operates from a single +5V supply voltage. The device is designed for high resolution operation and offers very low distortion, low noise and fast settling time. The output driver stage allows for driving high current loads up to 25mA and offers low output impedance. The EL4501IU also offers large power supply rejection ratio (PSRR) of 55dB and a high common-mode rejection ratio (CMRR) of 75dB. The EL4501IU is offered in 8-pin commercial, 8-pin SOIC, and 8-pin TSSOP packages.

Working Principle

The EL4501IU consists of two high-performance voltage buffer amplifiers and a low-noise output driver stage. The high-performance voltage buffer amplifiers are designed to provide very high resolution signal conditioning. The inputs of the two amplifiers are driven by a differential signal. The output of the amplifiers is then fed to the output driver stage, which is capable of driving high current loads. The output driver has the ability to drive up to 25mA and offers low output impedance. The output of the driver is then available to be connected to the external load. The performance is dependent on the load capacitance, slew rate required and settling time. The output stage is designed to have good noise rejection and low distortion.

Conclusion

The EL4501IU is a high performance voltage buffer amplifier for signal conditioning and video signal applications. By integrating two high-performance voltage buffer amplifiers and a low-noise output driver stage, it is capable of providing very high resolution signal conditioning and high current output drive capability. It is suitable for applications such as video signal conditioning, audio signal conditioning, and general voltage buffer applications.

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