MAX9851ETM+

The MAX9851ETM+ utilizes a single-supply, low-power stereo codec designed to operate with 3.3V to 5.5V supplies. This application IC is designed to provide a combination of both analog-to-digital and digital-to-analog conversion, in addition to volume control and signal amplification. The device is intended to be used in portable media players, gaming consoles, and home entertainment systems. This device is an updated version of the existing MAX9851ETM+, offering improved audio performance and usability.

The MAX9851ETM+ comprises two 12-bit ADCs, two 12-bit DACs, a low-pass filter, and signal amplifier. Digitally-programmable volume control is adjustable via an I2C interface. The MAX9851ETM+ provides a signal-to-noise-plus-distortion (SNR) of 103dB and input signal conditioning. In addition, it supports common audio interfaces, such as I2S format, PCM format, and TDM for time-division multiplexing.

The I2C interface uses the Inter-Integrated Circuit protocol, which is a low-speed, two-wire serial data-transfer format supports multiple master/slave communication. In this format, data is sent or received in 8-bit word size. The I2C interface of the MAX9851ETM+ allows for digital audio control, register access, and LED dimming configuration.

The MAX9851ETM+ incorporates an inbuilt low-pass filter to reduce any high-frequency noise created by power supply rail hums and other noise generated by other components in the system. The low-pass filter further reduces background noise while amplifying the audio signal before it is sent to the amplifier. The low-pass filter is also beneficial in improving the system\'s crosstalk and distortion.

As a signal amplifier, the MAX9851ETM+ drives digital audio signals to a headphone receptor or speaker, amplifying all audio signals in the digital-to-analog (DAC) converter. The device provides better audio performance than the traditional four resistor-based headphone amplifiers, as it offers improved signal-to-noise-ratio, a higher signal-to-distortion ratio, and reduced crosstalk.

In conclusion, the MAX9851ETM+ is an updated version of the MAX9851ETM that provides improved audio performance and usability. This single-supply stereo codec offers a combination of ADC/DAC conversion, low-pass filtering, and signal amplification, as well as I2C support for digital audio and other control. The device is useful for applications, such as portable media players, gaming consoles, and home entertainment systems.