MX7847BN+

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Data Acquisition systems continue to evolve in the solutions that they offer for various application areas. The MX7847BN+ is a digital to analogue (DAC) converter that is used in different application fields and with a variety of signals to help enhance the quality of audio, visual and performance driven solutions. Here we discuss what the MX7847BN+ is used for, how it works and the associated application fields.

Defining the MX7847BN+

The MX7847BN+ is manufactured and distributed by Murata electronics. As a high precision DAC, the MX7847BN+ is designed to convert digital signals into analogue via a 13-bit DAC resolution and accept input in different formats such as I2S, right justified, left justified, normalized and offset binary. This high precision DAC is equipped with a fast settling time (<2μs) and ultra low noise (<-94dB) to ensure a high quality output.

Application Areas of the MX7847BN+

Given the performance parameters of the MX7847BN+, it is optimized for use in different fields such as in audio systems, industrial and data acquisition, automotive and automotive audio, personal media systems and communications. For audio systems, the MX7847BN+ is ideal for use with audio amplifiers and concert sound systems. In automotive applications, it can be used in the design of car navigation systems, speakers, head units and amplifiers. In data acquisition systems, it can be used to convert digital sensor signals into analogue for further processing and analysis. In personal media systems, it is well equipped to handle the output of various digital signals from items such as media players, amplifiers and headsets. In the field of communications it is useful in the transformation of signals between different data formats.

Working Principle

The MX7847BN+ converts digital samples into an analogue output via the use of an integral resistor ladder. Each digital sample is used to enable a certain resistance within the ladder that behaves like a voltage divider. Through a series of these voltage dividers, the output voltage can be easily determined using the input voltage. The resistor ladder also contains an amplifier stage and a buffer stage to maintain accuracy of the output signal and improve its stability. In addition, the MX7847BN+ also uses a compensation capacitor to maintain gain stability over time and temperature.

Conclusion

The MX7847BN+ is a high precision digital to analogue converter that is well suited for use in audio and automotive systems as well as data acquisition and communications. Its specifications such as fast settling time and low noise performance make it ideal for use in situations where accuracy and stability are required. Its working principle of using multiple resistor ladders, together with an amplifier and buffer stage, ensures that accurate analogue signals can be obtained from digital input.

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