MAX98090AETL+

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In recent years, the application field of CODECs has long been associated with its ability to convert digital data into analog data (and vice versa). This capability enables signal transfer between digital components that might not be compatible. The MAX98090AETL+ from Maxim Integrated is one such audio interfaces coded specifically for use with portable, touch sensing, and near-field communications applications. In this article, we will cover the application field and working principles of the MAX98090AETL+.

First and foremost, CODECs are ideal for mobile audio applications that require thin space constrained build and low power consumption. The MAX98090AETL+ audio interface follows in this same vein; allowing the user to create audio systems with the most current touch and near-field communication capabilities. It is a highly adaptive audio solution that is designed to support a wide range of audio functions that include noise cancelation, power management, Bluetooth v5.1 integration, tone and volume control, and more. Additionally, the MAX98090AETL+ is designed to support an array of architectures and usage modes that only furthers its portability and versatility.

The MAX98090AETL+ also features stereo headphone amplifiers with a digital-to-analog converter and includes a differential analog output providing the convenience to drive balanced line-in or headphone jacks. This audio interface is equipped to support 48 kHz synchronous TDM stream playback. Additionally, a capacitive ANC interface is included for supporting low-rate ANC algorithms; this highly advanced feature makes the MAX98090AETL+ great for headset and microphone applications, as well as sound system applications.

In terms of power management, the single-supply MAX98090AETL+ can operate off of a 2.5 V to 5.5 V supply and has a low-power shutdown feature that ensures an ultra-low power consumption of less than 5 µA. The MAX98090AETL+ also supports Flexible Power Supply (FPS) which allows users to draw current from a single cell Li-Ion coin cell battery.

The MAX98090AETL also incorporates a biometric finger gesture interface which can detect motion as light as 10 nA which is 30 times more sensitive than traditional CODECs. This feature is perfect for any user interface applications or wearables that require an increase in sensitivity for better user navigation.

The MAX98090AETL+ supports adaptive a Digital Noise Cancellation (DNC) algorithm that reduces the perceived voice problems that may result from background noise. This feature also supports an Echo Cancellation (EC) algorithm which helps to improve acoustic echo cancellation and reduce reversed transmission in a wide variety of environments.

Overall, the MAX98090AETL+ is a great audio interface for any touch sensing, near-field communication, and battery-operated applications. It is designed to be power efficient, supporting power-down and low-power analog and digital functions while still being able to support various architectures. Additionally, the MAX98090AETL+ provides ANC, EC, and DNC functions; allowing for an improved user experience in a wide range of noise environments.

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