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CE2826 PDF даташит

Спецификация CE2826 изготовлена ​​​​«CEI Microelectronics» и имеет функцию, называемую «6-Channel Audio Codec».

Детали детали

Номер произв CE2826
Описание 6-Channel Audio Codec
Производители CEI Microelectronics
логотип CEI Microelectronics логотип 

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CE2826 Даташит, Описание, Даташиты
Microelectronics
CE2826
6-Channel Audio Codec, 24-bit, 192kHz
DESCRIPTION
The CE2826 is a mixed signal CMOS monolithic audio
Codec. It contains six multi-bit sigma delta DAC and a
stereo ADC, Ideal for DVD and audio processing
application.
The DAC consists of 128-time interpolation filters, 3rd
order multi-bit Σ∆ modulators, switch capacitors and
analog reconstruction filters. The Σ∆ converter offers
superior differential linearity, with minimum distortion due
to component mis-match. high tolerance to clock jitter.
Additionally it includes separated digital volume control
for each channel.
FEATURES
• Six Channel Audio DAC.
- 104 dB SNR (A Weighted).
- -91 dB THD + N Ratio (A Weighted).
- 32K - 192 KHz. Sampling Rates.
- On -chip Reconstruction Filters.
- Independent Digital Volume Control.
• Stereo Audio ADC.
- Up to 96K sampling Rate.
• I2S, Left and Right Justified Digital I/F Formats.
• 2-wire Serial Control Interface.
• 3.3 Volt Power Supply.
The ADC utilizes cascaded Σ∆ architecture. The internal
digital filter has a 20K bandwidth. It support sampling
frequency up to 96K Hz.
Applications
• Digital Surround Sound For Home Theatre
• DVD
• Car Audio.
XCK
LRCK
BCK
77
78
DIN1
DIN2
DIN3
80
80
77
DOUT
77
Clock Rate
Detect'n
DIGITAL
AUDIO
I/F
SDA SCL
Control Interface
CE2826
Σ∆
Mod.
D/A
D/A
INTERPOLATION
FILTER
Σ∆
Mod.
D/A
D/A
Σ∆
Mod.
D/A
D/A
HIGH PASS
FILTER
DECIMATION
FILTER
A/D
AR1
AL1
AR2
AL2
AR3
AL3
AINR
AINL
CEI Microelectronics Co. Ltd.
1-20
February 3, 2005









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CE2826 Даташит, Описание, Даташиты
Item
1
2
3
4
5
6
7
8
CE2826 Performance
DAC PERFORMANCE SPECIFICATIONS
Audio Output Level
Audio Bandwidth 20Hz - 20 KHz
SNR (A-weight)
THD + NOISE (A-weight, 0 dB input)
Dynamic Range
Channel Separation
Nonlinear Distortion
Channel Gain Error
Spec.
1 Vrms
+/- 0.1 dB
>104 dB
< -91 dB
94 dB
< -90 dB
< 0.25 dB
< 0.1 dB
ADC PERFORMANCE SPECIFICATIONS
1 Maximum Input Level
2 0 dB Audio Input Level
3 Audio Bandwidth 20Hz - 20 KHz
4 SNR (A-weight)
5 THD + NOISE (A-weight, 0 dB input)
6 Dynamic Range
7 Channel Separation
8 Nonlinear Distortion
9 Channel Gain Error
All Measurement were taken with only one channel active.
5 Vpp
1 Vrms
+/- 0.5 dB
>94 dB
< -88 dB
91 dB
< -90 dB
< 0.5 dB
< 0.5 dB
CE2826
2-20 February 3, 2005









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CE2826 Даташит, Описание, Даташиты
CE2826
Description (continue)
The DAC support conversion rate from 32K to 192KHz while the ADC from 32K to 96K. The CE2826 support 32, 24, 20 and
16-bit input data. It also support multiple sampling frequency data. Each DAC has its own individual volume control.
XCK REQUIREMENT
The CE2826 supports 384 and 256 times sampling clock for 32, 44.1, 48, 96 and 192K audio; 192 or 128 times for the 96 K
audio.; and 96 and 64 times for the 192K audio. There is an clock frequency detection circuit to set up the system clock
normally the user don’t need to set the CREG[5:4] registers.
XCK Requirement
Sampling
Rate
CREG1[5:4]=[0 0]
XCK Freq.
CREG1[5:4]=[0 1]
Normal XCK
2 times XCK
fs
384*fs
256*fs
2*384*fs
2*256*fs
32 K 12.288 MHz 8.192 MHz
44.1 16.934 Mhz 11.29 Mhz.
48 K 18.432 MHz 12.288 Mhz.
96 K
18.432 MHz 12.288 Mhz. 36.864 MHz 24.576 Mhz.
192 K
18.432 Mhz 12.288 Mhz. 36.864 Mhz 24.576 Mhz.
Normal XCK is preferred for all sampling rates.
CREG1[5:4]=[1 0]
4 times XCK
4*384*fs
4*256*fs
73.728 Mhz 49.152 Mhz.
3-20 February 3, 2005










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