MAX4395ESD/V+

Series:	Automotive, AEC-Q100
Packaging:	Tube
Part Status:	Obsolete
Applications:	Voltage Feedback
Output Type:	Rail-to-Rail
Number of Circuits:	4
-3db Bandwidth:	85MHz
Slew Rate:	500 V/µs
Current - Supply:	6mA
Current - Output / Channel:	95mA
Voltage - Supply, Single/Dual (±):	4.5 V ~ 11 V, ±2.25 V ~ 5.5 V
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Base Part Number:	MAX4395

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Introduction to MAX4395ESD/V+

The MAX4395ESD/V+ is the industry\'s smallest triple low-voltage amplifier operating at a power supply of 12V and beyond. This is an ideal solution for mobile and portable, low-power applications such as automotive audio systems and consumer audio, video and broadcast systems. This device is a low-voltage amplifier consisting of three differential inputs driven by an ultra-low voltage single-ended, class-D amplifier. It provides optimum audio performance for small applications and is highly efficient in terms of power consumption.

Application Field of MAX4395ESD/V+

As the device operates from a fairly wide 12V supply and is optimum for low-voltage applications, the MAX4395ESD/V+ is a perfect choice for automotive audio systems that is replacing conventional linear amplifiers. This high-performance and cost-effective solution is also highly suitable for consumer audio and video applications. The device has a high input level and low distortion that provides excellent audio performance even in noisy environments or at high sound pressure levels and is an ideal choice for broadcast systems.The device also ensures efficient battery consumption as it switches fast between cut-in and cut-out and operates at a switching frequency above 3MHz. This allows the device to output low-frequency signals and reduce switching losses. Furthermore, the device has excellent power-supply rejection and low total harmonic distortion.

Working Principle of MAX4395ESD/V+

The MAX4395ESD/V+ differential amplifier uses a differential input stage and a low-voltage/high-current class-D output stage. The differential input stage has two inputs and provides high levels of input signal common-mode rejection. The input stage is driven by a low-voltage, single-ended amplifier operating at 12V power supply and beyond.The device can output currents up to 300mA, with voltage gain setting of up to 14V/V. Using a low-voltage power supply, the device ensures improved battery current efficiency and excellent power-supply rejection. It also features fast turn-off/turn-on capabilities and requires low quiescent current when shut down.The enable pin is used to switch the amplifier on and off. There is direct gain control, which is done by changing the voltage applied to the gain-control pin while keeping the voltage applied to the enable pin equal to the supply voltage. The MAX4395ESD/V+ has an ultra-low distortion of less than 0.09%, a temperature range between -40°C and +125°C, and a wide common-mode range from -5V to +5V. It operates at supply voltage which ranges from 2V to 12V and uses an input voltage of 0.5V to enable the device.

Conclusion

The MAX4395ESD/V+ is an excellent choice for low-voltage applications such as car audio systems, consumer audio/video products and broadcast systems as it offers exceptional power efficiency and excellent audio performance. It uses a low-voltage single-ended, class-D amplifier with a differential input stage and offers direct gain control with a voltage gain set-up to 14V/V and a low quiescent current when shut down. The device also features a temperature range between -40°C and +125°C, a wide common-mode range from -5V to +5V and a fast turn-off/turn-on capability with a switching frequency above 3MHz.

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