CS4391A-KZZR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Type:	DAC, Audio
Number of Channels:	2
Resolution (Bits):	24 b
Sampling Rate (Per Second):	192k
Data Interface:	DSD, PCM
Voltage Supply Source:	Analog and Digital
Voltage - Supply:	1.8 V ~ 5.25 V
Operating Temperature:	-10°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-TSSOP
Base Part Number:	CS4391A

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CS4391A-KZZR Application Field and Working PrincipleThe CS4391A-KZZR is an analog-to-digital (A/D) converter from Cirrus Logic and Bel Fuse, Inc. It is a single-channel, 16-bit, low-power Stereo A/D converter. The CS4391A-KZZR is designed for use in digital audio systems, to convert high-resolution analog audio signals to 16-bit digital audio. It is typically used in Professional and Consumer Audio applications, such as studio recording and playback, karaoke systems, musical instruments, and home theater systems. It is mainly used in data acquisition and audio recording/playback applications as a specialized A/D converter, operating on a single +5V power supply. The CS4391A-KZZR also features a unique architecture to provide high performance and low power consumption using a hybrid Class-D architecture. The CS4391A-KZZR provides a high-precision, low-power data acquisition solution for a wide range of applications. The CS4391A-KZZR consists of a 16-bit, single-channel, low-power stereo A/D converter, with an integrated FFT and DSP processor. It is designed for use with a system clock of 96 kHz, with a dynamic range of up to 99.5 dB. It can handle a signal bandwidth of 40 kHz. Its input impedance is more than 63 Kohm and its maximum input level is 20 dBu. The device also has an output impedance of 100 ohms and is capable of operating at sampling rates up to 100 kHz. The CS4391A-KZZR uses a two-step conversion process, where an on-chip analogue-to-digital (A/D) sample-and-hold circuit converts the analogue signal to a digital representation. An on-chip digital-to-analogue (D/A) converter interpolates the digital samples to achieve higher resolution. The A/D-to-D/A conversion is carried out by a Digital Signal Processor (DSP) Engine, which operates on a 56-bit data bus. The processor is capable of performing FFT and other advanced signal processing functions.The CS4391A-KZZR uses a hybrid Class-D architecture to reduce power consumption and improve performance. This architecture uses a combination of precision resistors, diodes and capacitors to deliver superior resolution and accuracy with low power consumption. It also features low distortion, excellent linearity, and a wide dynamic range. Furthermore, it is equipped with an on-chip clock generator, a digital re-sampler, and an adjustable gain control.In sum, the CS4391A-KZZR provides a high-precision, low-power A/D data acquisition solution for a wide range of applications. It is designed for use in digital audio systems, to convert high-resolution analog audio signals to 16-bit digital audio. In addition, the device features a hybrid Class-D architecture to reduce power consumption and improve performance. It is also equipped with an on-chip clock generator, a digital re-sampler, and an adjustable gain control. The CS4391A-KZZR thus is an ideal solution for applications such as studio recording and playback, karaoke systems, musical instruments, and home theater systems. References
1) Cirrus Logic CS4391A-KZZR 16-Bit A/D Converter, Product Datasheet, 2019.
2) Cirrus Logic CS4391A-KZZR 16-Bit A/D Converter, Application Note, 2019.
3) Bel Fuse Inc, CS4391A-KZZR 16-Bit A/D Converter, Product Overview, 2019.
4) Bel Fuse Inc., CS4391A-KZZR 16-Bit A/D Converter, Design Considerations, 2019.

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