TAS2770YFFR

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TAS2770YFFR Application Field and Working Principle

The TAS2770YFFR is a highly integrated, embedded, mono audio digital-to-analog converter (DAC) with integrated Direct Path Class-D Single-Ended and output power stage. It is a mixed-signal audio amplifier system and is classified as a Linear-Amplifier-Audio device. This system is based on modern power efficient Fully Differential Architecture, allowing the device to deliver high quality audio playback while ensuring an ultra-low power consumption level.

Application Field

The TAS2770YFFR is ideal for applications such as mobile phones and music players, as well as notebook, automotive, and consumer products. It is optimized for use in low power devices such as phones, tablets, and audio players, and it offers superior power efficiency along with excellent audio performance characteristics. The device features a high safety mode, over-temperature, and under-voltage lock outs.

Working Principle

The TAS2770YFFR device works on the principle of direct-path PWM architecture. This is a method of converting digital signals into a corresponding voltage difference between two output pins without the need for an output buffer. This technique results in high efficiency and lower power draw, as only the Class-D output stage is active. It also allows for superior distortion and noise performance due to the low capacitive loading of the output stage. The device utilizes feedback-based PWM to ensure constant output level under varying load and temperature conditions, allowing for a consistent sound experience.

In addition to the Direct-Path PWM architecture, the TAS2770YFFR employs a two-stage architecture which is based on the delta-sigma modulation concept. The first stage is a noise-shaping delta-sigma modulator, which converts the audio data into a pulse-width modulated signal. This signal is then converted into a powerful analog output voltage by the second stage, a dedicated-power-stage Class-D amplifier.

The final output is fully differential, meaning the positive and negative voltage compounds are balanced with each other for superior noise rejection and output drive capability. This means that the signal is driven without additional components, resulting in a highly efficient and cost effective system.

Conclusion

The TAS2770YFFR offers a highly efficient and cost effective solution for high quality audio playback in a wide variety of applications. It has the high performance and cost saving benefits of Direct-Path PWM Architecture, along with the noise shaping capabilities that come with delta-sigma modulation. This system is ideal for use with low power applications, and the integrated class-D output power Stage ensures consistent output levels even under varying load and temperature conditions.

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