CDB4398

Series:	--
Part Status:	Active
Number of DAC's:	2
Number of Bits:	24
Sampling Rate (Per Second):	192k
Data Interface:	I²C, SPI™
DAC Type:	Voltage
Supplied Contents:	Board(s), Cable(s)
Utilized IC / Part:	CS4398

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Introduction to CDB4398

The CDB4398 digital-to-analog converter (DAC) is a highly integrated device with low power and high performance. It is designed for audio applications including consumer electronics and professional audio. This DAC has two in-built voltage regulators. A high-voltage regulator is responsible for providing the VDD supply. The second, low-voltage regulator, supplies the VDDQ supply.The CDB4398 features four versatile audio channels with programmable sample rates from 8 kHz to 48 kHz. Each channel provides high-quality playback of 16-bit audio with a dynamic range of 95 dB. The audio outputs are protected from transient noise and distortion due to its integrated bunch of features like Surface Mount Technology, Noise Shaping, Digital De-emphasis, and Dynamic Range Control.

Application and Working Principle of the CDB4398

The CDB4398 is suitable for any audio-related application where quality is of the utmost importance. The versatility of the output channels and the built-in features allow its use in a wide range of consumer and professional audio applications.The CDB4398 operates by converting digital audio data into an analog electrical signal. Internally, the DAC converts the input digital data into an equivalent value of digital code. This code is then converted into an analog signal through a multi-stage process.The first step involves the conversion of the digital code to a Pulse Density Modulated (PDM) signal. This signal is then strictly filtered to remove unwanted noise. Afterward, the signal is passed through an amplifier for voltage regulation. Finally, the signal is sent to an output driver that converts it to a high-fidelity analog signal. The CDB4398 incorporates advanced features in order to ensure a distortion-free audio signal. Its noise-shaping technique enables it to reduce low-frequency noise and distortion for improved audio performance. Furthermore, its built-in digital de-emphasis feature minimizes inter-modulation distortion and ensures high-fidelity playback of incoming digital audio signals.

Conclusion

The CDB4398 is a versatile and highly integrated audio DAC with low power and excellent performance. It is suitable for a variety of audio-related applications where quality is the highest priority. Its four audio channels can be programmed to sample rates ranging from 8 kHz to 48 kHz. It is equipped with advanced features such as noise-shaping, digital de-emphasis, and dynamic range control, which ensure interference-free, distortion-free audio output.

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