MAX9720BEUE+

The MAX9720BEUE+is an audio amplifier IC designed to provide a high yield audio solution for fixed and gain-adjusted systems. By integrating a gain boosting preamplifier, a low impedance voltage-controlled amplifier, a bass boost circuit, dual-outputdrive capability, thermal protection, and an active mute, the MAX9720BEUE+ can be used in both speakers and headphones.

The MAX9720BEUE+ supports adjustable gain up to 32dB. It also provides a low-noise preamplifier to boost the input signal. Additionally, the bass boost circuit ensures loud, clear bass output. The maximum output power is 78mW for 8 ohm headphones, and up to 153mW for 4 ohm speakers.

In terms of performance, the MAX9720BEUE+ achieves a low-distortion level of 0.008%, THD+N ratio of 24 dB, SNR of 90 dBA, and a channel separation of 75 dB. In addition, it has a dynamic range of 105 dBA. Additionally it utilizes Thermal Protection, Integrated Header, Pop and Click Noise Reduction, Idle Power-Down Mode, and more.

Working Principle: The MAX9720BEUE+ works on the principle of charge transfer. When AC signals pass through the chip, its output voltage is amplified by the voltage transfer characteristic of the inductive network. Its inductive network is tuned with a proper damping factor. Its output voltage is determined by the difference in the distance between positive and negative portions of its network. This distance is called “the operating point” of the chip, and it is determined by a voltage regulator.

The MAX9720BEUE+ has two sections - an amplifier and preamplifier. It uses the voltage transfer principle in both sections. The preamplifier increases the input signal whereas the amplifier increases the output signal amplitude. The gain adjustment of the preamplifier can be done by utilizing the Voltage Controlled Amplifier (VCA). Additionally, Bass Boost circuit is used to further amplify the output.

Application Field: The MAX9720BEUE+ is becoming increasingly popular because of its versatility and small size. It can be used as an audio amplifier in a wide range of applications such as portable audio players, small speakers, headphones, and in audio systems for automotive or home use. It is also suitable for use in personal computers, gaming systems, and digital cameras.

Moreover, the MAX9720BEUE+ can be used in industrial applications such as robotic arms and audio systems for office automation systems. Additionally, it is suitable for use in home appliances, instrumentation, and automation systems. Its compact size and digital control make it ideal for use in space-critical applications.

As a result, the MAX9720BEUE+ is becoming increasingly popular for audio amplifier applications. It offers a versatile solution for small- and medium-sized applications requiring high quality audio performance and low power consumption. Its ease of use, low cost, and high performance make it a great choice for audio amplifier and line output designs.