PCM1798DBG4

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The PCM1798DBG4 is a versatile and powerful multi-channel audio DAC from Texas Instruments. It is designed for high-quality multi-channel audio applications, including 5.1 and 7.1 surround sound systems. This device is suitable for a wide range of applications, from home theaters to professional recording studios. It has several features that make it an ideal choice for any audio system.

The PCM1798DBG4 is a two-channel multi-bit audio DAC with 24-bit resolution. It integrates all necessary circuitry to perform accurate digital-to-analog conversion. It also features a low-latency digital interpolation filter, which allows it to accurately match the input data rate to the required sampling rate. In addition, the device is engineered with a noise-shaping circuit to minimize the noise levels in the output.

The PCM1798DBG4 uses a voltage-output design that allows easy interfacing with a variety of external components. Its high bandwidth ensures a consistent and accurate output signal, irrespective of the input data rate or sampling rate. Its power consumption is also quite low, so it can be used in battery-powered systems without compromise.

As far as application field is concerned, the PCM1798DBG4 is widely used in digital audio systems for playback of audio sources such as CDs, DVDs, Blu-ray discs, and high-resolution audio files. It is also suitable for surround sound systems, where it delivers high-quality multi-channel audio with a wide dynamic range. Additionally, it can be used in professional recording and broadcast studios, as it supports sampling rates up to 192kHz and features a low latency digital interpolation filter.

Regarding the working principle of this device, it is based on a two-channel multi-bit architecture, with a 24-bit resolution. This architecture utilizes an analog output stage, which converts the digital signal into an analog voltage. The voltage output is then fed through an analog filter to reduce the noise levels in the output. The device also includes a noise-shaping circuit, which allows it to meet the THD+N levels specified in the datasheet.

In conclusion, the PCM1798DBG4 is a versatile and powerful multi-channel audio DAC from Texas Instruments. This device is well-suited for a wide range of audio applications, including 5.1 and 7.1 surround sound systems. It is designed to deliver high-quality multi-channel audio with a wide dynamic range and low noise levels. Additionally, it is suited for professional recording and broadcast studios, as it supports sampling rates up to 192kHz and features a low latency digital interpolation filter.

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