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CS4390
24-Bit, Stereo D/A Converter for Digital Audio
The following information is based on the technical datasheet: CS4390 DS264PP1 MAY `97 Please contact Cirrus Logic : Crystal Semiconductor Products Division for further information.
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Copyright (c) Cirrus Logic, Inc. 1998 (All Rights Reserved)
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CS4390
Features
24-Bit, Stereo D/A Converter for Digital Audio
Features
q 24-Bit Conversion q 115 dB Signal-to-Noise-Ratio (EIAJ) q 106 dB Dynamic Range q -97 dB THD+N q 128x Oversampling q Low Clock Jitter Sensitivity q Filtered Line-Level Outputs
Linear Phase Filtering Zero Phase Error Between Channels
q Adjustable System Sampling Rates
including 32 kHz, 44.1 kHz & 48 kHz
q Digital De-emphasis for 32 kHz, 44.1 kHz & 48 kHz q Pin Compatible with CS4329
Description
The CS4390 is a complete stereo digital-to-analog output system. In addition to the traditional D/A function, the CS4390 includes a digital interpolation filter followed by 128X oversampled delta-sigma modulator. The modulator output controls the reference voltage input to an ultra-linear analog low-pass filter. This architecture allows for infinite adjustment of sample rate between 1 and 50 kHz while maintaining linear phase response simply by changing the master clock frequency.
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CS4390
Overview
The CS4390 also includes an extremely flexible serial port utilizing mode select pins to support multiple interface formats. The master clock can be either 256, 384, or 512 times the input sample rate, supporting various audio environments.
Overview
The CS4390 is a complete stereo digital-to-analog system including 128x digital interpolation, fourth-order delta-sigma digital-to-analog conversion, 128x oversampled one-bit delta-sigma modulator and analog filtering. This architecture provides a low sensitivity to clock jitter. The DAC converts digital data at any input sample rate between 1 and 50 kHz, including the standard audio rates of 48, 44.1 and 32 kHz. The primary purpose of using delta-sigma modulation techniques is to avoid the limitations of laser trimmed resistive DAC architectures by using an inherently linear 1-bit DAC. The advantages of a 1-bit DAC include: ideal differential linearity, no distortion mechanisms due to resistor matching errors and no linearity drift over time and temperature due to variations in resistor values.
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CS4390
FAQs FAQs
1) A: 2) A: What is the difference between the CS4329 and the CS4390? Although the analog performance of the CS4329 and CS4390 is essentially the same, the CS4390 supports 24-bit conversion. What would happen if you input 24-bit data into a 20-bit converter D/A converter like the CS4329? A 20-bit D/A converter will provide poor distortion performance when presented 24-bit data. The 24-bit CS4390 however will be able to provide true high performance 24-bit conversion without any degradation in the distortion performance. Is the CS4390 always a pin compatible replacement for the CS4329? The CS4390 can replace the CS4329 in any socket without requiring any layout change by the customer. The only exception is if the customer is using the CS4329 in the right justified 18-bit mode(Format 1 in the CS4329 data sheet).
3) A:
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CS4390
Ordering Information Ordering Information
CS4390-KP -10 to 70 xC 20-pin Plastic DIP CS4390-KS -10 to 70 xC 20-pin Plastic SSOP CDB4390 CS4390 Evaluation Board For further information on Crystal products, please visit our website "www.crystal.com" or call our literature department (800) 888-5016 ext. 3594 or (512) 912-3594 for data sheets and application notes.
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Sales Office and Applications Support
UNITED STATES Sales Office and Applications Support: WESTERN AREA Cirrus Logic Crystal Semiconductor Div. 50 Airport Pkwy. San Jose, CA 95110 Ph: 408-437-7743 FAX: 408-437-4943
Cirrus Logic Crystal Semiconductor Div. 6 Venture, Ste. 100 Irvine, CA 92718 Ph: 714-453-5910 FAX: 714-453-5914
EUROPE Sales Office and Applications Support:
Cirrus Logic France Immeuble Andre Malraux 93561 Rosny s/s Bois CEDEX, France Ph: +33(148)122812 FAX: +33(148)122810 Cirrus Logic Crystal Semiconductor (UK) Ltd. Spectrum Point, 279 Farnborough Rd., Farnborough, Hampshire GU14 7LS, United Kingdom Ph: +44(0)1252372762 FAX: +44(0)1252372763 Cirrus Logic GmbH Muehlfelder-Strasse 2 D-82211 Herrsching, Germany Ph: +49(08152)92460 FAX: +49(08152)924699
KOREA Cirrus Logic, Korea Co., Ltd. Rm 1302 SangKyung Bldg., 82421 YeokSam-Dong, KangNam-Ku, Seoul, Korea Ph: +82(2)565-8561 FAX: +82(2)565-8565 SINGAPORE Cirrus Logic Crystal International 6 Kaki Bukit Ave. 1, Ste. 03-03 Singapore 417940 Ph: +65-743-4111 FAX: +65-742-4111 TAIWAN Cirrus Logic International Ltd. Taiwan Branch 10F, No.214 Tun Hwa North Rd. Taipei, Taiwan R.O.C. Ph: +886(2)2718-4533 FAX: +886(2)2718-4526
CENTRAL AREA Cirrus Logic Crystal Semiconductor Div. 14205 Burnet Rd., Ste. 400 Austin, TX 78728 Ph: 512-255-8893 FAX: 512-255-0733 EASTERN AREA Cirrus Logic Crystal Semiconductor Div. 5511 Capital Center Dr., Ste. 103 Raleigh, NC 27606 Ph: 919-859-5393 FAX: 919-859-5334
Cirrus Logic 10 New England Business Center, Ste. 100 Andover, MA 01810 Ph: 978-794-9138 FAX: 978-794-9998 Cirrus Logic Crystal Semiconductor Div. 10440 Little Patuxent Pkwy., Ste. 300 Columbia, MD 21044-3559 Ph: 410-740-5654 FAX: 410-740-6961
JAPAN FAR EAST Sales Office and Applications Support: CHINA Cirrus Logic International Ltd. A-1403, Qiancun Commercial Mansion Beijing, China 100029 Ph: (8610)6443-0783 Ph: (8610)6443-0784 Ph: (8610)6443-0785 FAX: (8610)6443-0786 HONG KONG Cirrus Logic International Ltd. 1203 Park Tower 15 Austin Rd., Tsimshatsui Kowloon, Hong Kong Ph: (852)2376-0801 FAX: (852)2375-1202 Sales Office and Applications Support: Cirrus Logic K.K. Shinjuku Green Tower, Bldg. 26F 6-14-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo, 160 Japan Ph: +81(03)3340-9111 FAX: +81(03)3340-9120
CRYSTAL SEMICONDUCTOR PRODUCTS DIVISION PO BOX 17847 4210 S. INDUSTRIAL DRIVE AUSTIN, TEXAS 78744 512.445.7222 / 800.888.5016 FAX: 512.445.7581 WORLDWIDE WEB: http://www.crystal.com

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