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PCM3003E/2K

更新时间： 2024-11-30 02:59:15
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页数 文件大小 规格书
39页 547K
描述
16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS

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PCM3003E/2K 数据手册

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PCM3002  
PCM3003  
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SBAS079A–OCTOBER 2000–REVISED OCTOBER 2004  
16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS  
FEATURES  
•
•
Single 3-V Power Supply  
Small Package: SSOP-24  
•
•
•
•
•
Monolithic 20-Bit ∆Σ ADC and DAC  
16/20-Bit Input/Output Data  
Software Control: PCM3002  
Hardware Control: PCM3003  
Stereo ADC:  
APPLICATIONS  
•
•
•
DVC Applications  
DSC Applications  
Portable/Mobile Audio Applications  
– Single-Ended Voltage Input  
– Antialiasing Filter  
DESCRIPTION  
– 64× Oversampling  
The PCM3002 and PCM3003 are low-cost,  
single-chip stereo audio codecs (analog-to-digital and  
digital-to-analog converters) with single-ended analog  
voltage input and output.  
– High Performance  
• THD+N: –86 dB  
• SNR: 90 dB  
The ADCs and DACs employ delta-sigma modulation  
with 64-times oversampling. The ADCs include a  
digital decimation filter, and the DACs include an  
8-times oversampling digital interpolation filter. The  
DACs also include digital attenuation, de-emphasis,  
infinite zero detection, and soft mute to form a  
complete subsystem. The PCM3002 and PCM3003  
operate with left-justified (ADC) and right-justified  
(DAC) formats, while the PCM3002 also supports  
other formats, including the I2S data format.  
• Dynamic Range: 90 dB  
Stereo DAC:  
•
– Single-Ended Voltage Output  
– Analog Low-Pass Filter  
– 64× Oversampling  
– High Performance  
• THD+N: –86 dB  
• SNR: 94 dB  
The PCM3002 and PCM3003 provide a power-down  
mode that operates on the ADCs and DACs indepen-  
dently.  
• Dynamic Range: 94 dB  
Special Features (PCM3002, PCM3003)  
•
•
– Digital De-Emphasis: 32 kHz, 44.1 kHz,  
48 kHz  
The PCM3002 and PCM3003 are fabricated using a  
highly advanced CMOS process, and are available in  
– Power Down: ADC/DAC Independent  
Special Features (PCM3002)  
– Digital Attenuation (256 Steps)  
– Soft Mute  
a
24-pin SSOP package. The PCM3002 and  
PCM3003 are suitable for wide variety of  
a
cost-sensitive consumer applications where good per-  
formance is required.  
The PCM3002 programmable functions are controlled  
by software. The PCM3003 functions, which are  
controlled by hardware, include de-emphasis,  
power-down, and audio data format selections.  
– Digital Loopback  
– Four Alternative Audio Data Formats  
Sampling Rate: 4 kHz to 48 kHz  
•
Digital  
Decimation  
Filter  
Lch In  
Digital Out  
Digital In  
Delta-Sigma  
Analog Front-End  
Modulator  
Rch In  
Serial Interface  
and  
*
Mode Control  
Low-Pass Filter  
and  
Output Buffer  
Multilevel  
Delta-Sigma  
Modulator  
Digital  
Interpolation  
Filter  
Lch Out  
Rch Out  
Mode Control  
System Clock  
* PCM3002 Only  
B0006-01  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
System Two, Audio Precision are trademarks of Audio Precision, Inc.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2000–2004, Texas Instruments Incorporated  
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