CS42428-DQZR

S/N Ratio, ADCs / DACs (db) Typ:	--
Base Part Number:	CS42428
Supplier Device Package:	64-LQFP (10x10)
Package / Case:	64-LQFP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Digital:	3.13 V ~ 5.25 V
Voltage - Supply, Analog:	4.75 V ~ 5.25 V
Dynamic Range, ADCs / DACs (db) Typ:	114 / 114
Series:	--
Sigma Delta:	Yes
Number of ADCs / DACs:	2 / 8
Resolution (Bits):	24 b
Data Interface:	Serial
Type:	Audio
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

CS42428-DQZR is a digital audio signal processor (DASP) from Cirrus Logic. It is a single-chip device, released in 2011, and it provides a cost-effective and feature-complete digital signal processing path for applications such as digital. It integrates both line-level analog and digital signal processing functions on a single chip to reduce system costs and complexity.

Application Field

CS42428-DQZR is ideal for digital audio signal processing applications, such as digital mixers, DSP-based digital music systems, karaoke systems, and audio home theaters. It is compatible with most standard audio formats and codecs, with support for I2S, AC-3, Dolby Digital Plus, Dolby True HD, and DTS-HD Master Audio. Additionally, it supports extensive audio algorithms and is capable of decoding and encoding multiple audio channels to and from various data streams. It can also be used as an audio DAC, which converts analog signals to digital.

Working Principle

The CS42428-DQZR integrates a number of functions and features to deliver high quality digital audio signal processing. It supports a wide range of sampling rates and data types, including PCM and DSD formats. It also supports independent I2S outputs for subwoofer applications, as well as an Integrated Digital Audio Interface (AES3) for digital audio distribution. The device includes a hardware low-pass filter for low frequency playback and a bandlimited decimation filter for high frequency playback. Additionally, it supports DSP audio processing such as equalization, virtualization, noise reduction and dynamic range compression, as well as other signal conditioning functions.The CS42428-DQZR includes an on-chip memory to store coefficient data, and also features an additional I2C interface for parameter setup and configuration. The device is capable of delivering up to 24 bits of resolution and a signal-to-noise ratio of 98dB. The device also features an oscillator for sample rate synchronisation and a serial audio command port for interface to external controllers.

Conclusion

The CS42428-DQZR is a single-chip device which provides a cost-effective and feature-complete digital signal processing path for applications such as digital. Its support for multiple audio formats and codecs, as well as its audio processing functions, make it ideal for applications such as digital mixers, DSP-based digital music systems and karaoke systems. Additionally, its integrated memory, I2C interface, sample rate synchronisation and serial audio command port makes it an excellent choice for audio digital signal processing.

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