PCM1794ADBR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	DAC, Audio
Number of Channels:	3
Resolution (Bits):	24 b
Sampling Rate (Per Second):	200k
Data Interface:	I²S
Voltage Supply Source:	Analog and Digital
Voltage - Supply:	3 V ~ 3.6 V, 5V
Operating Temperature:	-25°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	28-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	28-SSOP
Base Part Number:	PCM1794A

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IntroductionThe PCM1794ADBR is a high performance 16-bit multi-bit delta-sigma digital-to-analog (DAC) converter. Specifically intended for consumer and professional audio applications, the device integrates a wide range of features to ensure high fidelity recordings and playback effects. This document will discuss the application fields and working principles of the PCM1794ADBR.Application FieldsThe PCM1794ADBR is a high-end DAC specifically tailored to consumer and professional audio applications. The device supports enhanced digital audio interfaces such as I2S, AC-Link, and S/PDIF, which allow for smooth transmission of digital audio signals with very low jitter. In addition, the device features an unprecedented dynamic range of 119.3 dB, enabling clean and crisp recordings both in professional and consumer grade set ups. Furthermore, the PCM1794ADBR is equipped with a multi-level noise-shaping digital filter to reduce noise during signal conversion, producing a more accurate and realistic output. Furthermore, it is capable of supporting sample rates of up to 24-bit/192 kHz, enabling high fidelity playback of both digital audio and digital video.Working PrincipleThe PCM1794ADBR is based on a multi-bit delta-sigma architecture, a compact and cost-effective alternative to traditional two-channel transmission. It achieves ‘oversampling’, i.e. the feature of converting each sample value to an additional number of bits, thereby improving the dynamic range and accuracy.Furthermore, the device features an integrated multi-level noise-shaping filter, which reduces the total harmonic distortion (THD) and noise of the line output by up to 0.004%. This ensures that any audio or video recording produced remains faithful to the original source.Finally, the PCM1794ADBR\'s output power stage includes a programmable amplifier that is capable of controlling the volume level of both digital audio and digital video signals, allowing users to enjoy the best playback effects.ConclusionThe PCM1794ADBR is a high-performance digital-to-analog converter specifically tailored to consumer and professional audio applications. Its multi-bit delta-sigma architecture ensures a wide dynamic range and accuracy, while its integrated multi-level noise-shaping filter reduces the THD and noise of the line output. Finally, its programmable amplifier allows the user to control the volume of the both digital audio and digital video signals.

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