CS4390 Datasheet
Download: CS4390 Datasheet 
CS4390
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.
PI264PP1 JAN '98
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.
PI264PP1 JAN '98
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.
PI264PP1 JAN '98
CS4390
tially the same, the CS4390 supports 24-bit conversion.
A: 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.
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).
PI264PP1 JAN '98
CS4390
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
Application notes.
PI264PP1 JAN '98
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
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
CS4390 Datasheet
24-Bit, Stereo D/A Converter For Digital Audio
Download: CS4390 Datasheet
CS4390
24-Bit, Stereo D/A Converter For Digital Audio
CS4390
FEATURES
L 24-bit Conversion L 115 Db Signal-to-noise-ratio (eiaj) L Complete Stereo Dac System
- 128X Interpolation Filter
- Delta-Sigma DAC
- Analog Post Filter
L 106 Db Dynamic Range L Low Clock Jitter Sensitivity L Filtered Line-level Outputs
- Linear Phase Filtering
- Zero Phase Error Between Channels
l Adjustable System Sampling Rates
- including 32 kHz, 44.1 kHz & 48 kHz
l Digital De-emphasis for 32 kHz, 44.1 kHz, &
48 kHz
l Pin-compatible with the 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 An 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.
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.
ORDERING INFORMATION CS4390-KP -10 to 70 C CS4390-KS -10 to 70 C CDB4390
20-pin Plastic DIP 20-pin Plastic SSOP Evaluation Board
7 LRCK
9 SCLK
10 SDATA
DIF0 DIF1 DIF2 20 19 12
Serial Input Interface
DEM0 DEM1
De-emphasis
Voltage Reference
MUTE_L 16
Interpolator
Delta-Sigma Modulator
AUTO_MUTE 11