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부품번호 | CS4330 기능 |
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기능 | (CS4330 - CS4333) 8-Pin Stereo D/A Converter | ||
제조업체 | CRYSTAL | ||
로고 | |||
전체 38 페이지수
CS4330 CS4331
CS4333
8-Pin Stereo D/A Converter for Digital Audio
Features
• Complete Stereo DAC System:
Interpolation, D/A, Output Analog
Filtering
• 18-Bit Resolution
• 94 dB Dynamic Range
• 0.003% THD
• Low Clock Jitter Sensitivity
• Single +3V or +5V Power Supply
• Filtered Line Level Outputs
Linear Phase Filtering
• On-Chip Digital De-emphasis
General Description
The CS4330, CS4331 and CS4333 are complete, ste-
reo digital-to-analog output systems including
interpolation, 1-bit D/A conversion and output analog
filtering in an 8-pin package. These devices differ in
the serial interface format used to input audio data.
The CS4330, CS4331 and CS4333 are based on
delta-sigma modulation, where the modulator output
controls the reference voltage input to an ultra-linear
analog low-pass filter. This architecture allows for infi-
nite adjustment of sample rate between 2 kHz and
50 kHz while maintaining linear phase response simply
by changing the master clock frequency.
The CS4330, CS4331 and CS4333 contain on-chip
digital de-emphasis, operate from a single +3V or +5V
power supply, and consume only 60 mW of power with
a 3V power supply. These features make them ideal
for portable CD players and other portable playback
systems.
ORDERING INFORMATION: See page 21.
LRCK
SDATA
3
1
Serial Input
Interface
Interpolator
DEM/SCLK
2
De-
emphasis
DDMeellottaad--uSSlaiiggtommraa
Modulator
AGND VA+
67
Voltage Reference
DAC
Analog
Low-Pass
Filter
AOUTL
8
Interpolator
Delta-Sigma
Modulator
4
MCLK
DAC
Analog
Low-Pass
AOUTR
Filter
5
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 Fax: (512) 445-7581
http://www.crystal.com
Copyright © Crystal Semiconductor Corporation 1997
(All Rights Reserved)
MAY ’97
DS136F1
1
Free Datasheet http://www.datasheet4u.com/
CS4330, CS4331, CS4333
LRCK
t slrd
SCLK
SDATA
t sdlrs
t slrs t sclkh
t sclkl
t sdh
External Serial Mode Input Timing
*LRCK
t sclkr
SDATA
t sdlrs t sdh
t sclkw
**INTERNAL SCLK
Internal Serial Mode Input Timing
* LRCK for CS4331
** The SCLK pulses shown are internal to the CS4330/31/33.
LRCK
MCLK
*INTERNAL SCLK
1N
2
N
SDATA
Internal Serial Clock Generation
* The SCLK pulses shown are internal to the CS4330/31/33.
N equals MCLK divided by SCLK
4 DS136F1
Free Datasheet http://www.datasheet4u.com/
4페이지 CS4330, CS4331, CS4333
GENERAL DESCRIPTION
The CS4330, CS4331, and CS4333 are complete
stereo digital-to-analog systems including digital
interpolation, 128× third-order delta-sigma digi-
tal-to-analog conversion, digital de-emphasis and
analog filtering, Figure 2. This architecture pro-
vides a high tolerance to clock jitter.
The primary purpose of using delta-sigma modu-
lation techniques is to avoid the limitations of
laser trimmed resistive digital-to-analog con-
verter architectures by using an inherently linear
1-bit digital-to-analog converter. The advantages
of a 1-bit digital-to-analog converter include:
ideal differential linearity, no distortion mecha-
nisms due to resistor matching errors and no
linearity drift over time and temperature due to
variations in resistor values.
Digital Interpolation Filter
The digital interpolation filter increases the sam-
ple rate by a factor of 32 and is followed by a 4×
digital sample-and-hold to effectively achieve a
128× interpolation filter. This filter eliminates
images of the baseband audio signal which exist
at multiples of the input sample rate, Fs. This
allows for the selection of a less complex analog
filter based on out-of-band noise attenuation re-
quirements rather than anti-image filtering.
Following the interpolation filter, the resulting
frequency spectrum has images of the input sig-
nal at multiples of 128× the input sample rate.
These images are removed by the external ana-
log filter.
Delta-Sigma Modulator
The interpolation filter is followed by a third-
order delta-sigma modulator which converts the
22-bit interpolation filter output into 1-bit data at
128× .
Switched-Capacitor Filter
The delta-sigma modulator is followed by a
digital-to-analog converter which translates the
1-bit data into a series of charge packets. The
magnitude of the charge in each packet is deter-
mined by sampling of a voltage reference onto a
switched capacitor, where the polarity of each
packet is controlled by the 1-bit signal. This
technique greatly reduces the sensitivity to clock
jitter and is a major improvement over earlier
generations of 1-bit digital-to-analog converters.
Digital
Input
Interpolator
Delta-Sigma
Modulator
DAC
Figure 2. System Block Diagram
Analog
Low-Pass
Filter
Analog
Output
DS136F1
7
Free Datasheet http://www.datasheet4u.com/
7페이지 | |||
구 성 | 총 38 페이지수 | ||
다운로드 | [ CS4330.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
CS4330 | (CS4330 - CS4333) 8-Pin Stereo D/A Converter | CRYSTAL |
CS4331 | (CS4330 - CS4333) 8-Pin Stereo D/A Converter | CRYSTAL |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |