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PCM1781

更新时间： 2024-11-22 21:54:51
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德州仪器 - TI 转换器
页数 文件大小 规格书
31页 426K
描述
24-Bit, 192-kHz Sampling, Enhanced Multilevel, Delta-Sigma, Audio Digital-to-Analog Converter

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PCM1781 数据手册

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PCM1780, PCM1781, PCM1782  
SLES132A–MARCH 2005–REVISED APRIL 2005  
24-Bit, 192-kHz Sampling, Enhanced Multilevel, Delta-Sigma,  
Audio Digital-to-Analog Converter  
FEATURES  
APPLICATIONS  
•
•
•
•
•
•
•
A/V Receivers  
DVD Movie Players  
DVD Add-On Cards For High-End PCs  
DVD Audio Players  
HDTV Receivers  
•
24-Bit Resolution  
•
Analog Performance (VCC = 5 V):  
– Dynamic Range: 106 dB  
– SNR: 106 dB, Typical  
– THD+N: 0.002%, Typical  
Car Audio Systems  
Other Applications Requiring 24-Bit Audio  
– Full-Scale Output: 3.9 Vp-p, Typical  
4×/8× Oversampling Digital Filter:  
– Stop-Band Attenuation: –50 dB  
– Pass-Band Ripple: ±0.04 dB  
Sampling Frequency: 5 kHz to 200 kHz  
•
DESCRIPTION  
The PCM1780/81/82 is a CMOS, monolithic, inte-  
grated circuit, which includes stereo digital-to-analog  
converters and support circuitry in a small 16-lead  
SSOP package. The data converters use TI’s en-  
hanced multilevel delta-sigma architecture to achieve  
excellent dynamic performance and improved toler-  
ance to clock jitter. The PCM1780/81/82 accepts  
industry standard audio data formats with 16- to  
24-bit data, providing easy interfacing to audio DSP  
and decoder chips. Sampling rates up to 200 kHz are  
supported. The PCM1780/82 provides a full set of  
user-programmable functions through a three-wire  
serial control port, which supports register write  
•
•
System Clock: 128 fS, 192 fS, 256 fS, 384 fS,  
512 fS, 768 fS, 1152 fS With Autodetect  
•
Software Control (PCM1780, PCM1782):  
– Accepts 16-, 18-, 20-, and 24-Bit Audio Data  
– Formats: Right-Justified, I2S, and  
Left-Justified  
– Digital Attenuation: Mode Selectable  
• 0 dB to –63 dB, 0.5 dB/step  
• 0 dB to –100 dB, 1 dB/step  
– Digital De-Emphasis  
functions. The PCM1781 provides  
user-programmable functions through four control  
pins.  
a subset of  
– Digital Filter Rolloff: Sharp or Slow  
– Soft Mute  
The PCM1780 is pin-compatible with the PCM1680  
(8-channel DAC).  
– Zero Flags for Each Output  
– Open-Drain Output Zero Flag (PCM1782)  
Hardware Control (PCM1781):  
– I2S and 16-Bit Word, Right-Justified  
– Digital De-Emphasis  
•
– Soft Mute  
– Zero Flag for L-, R-Channel Common Output  
Power Supply: 5-V Single Supply  
Small, 16-Lead SSOP Package (150 mil)  
Pin-Compatible with PCM1680  
•
•
•
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 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 © 2005, Texas Instruments Incorporated  
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PCM1781 替代型号

型号 品牌 替代类型 描述 数据表
PCM1780 TI

功能相似

 24-Bit, 192-kHz Sampling, Enhanced Multilevel, Delta-Sigma, Audio Digital-to-Analog Conver
PCM1782 TI

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 24-Bit, 192-kHz Sampling, Enhanced Multilevel, Delta-Sigma, Audio Digital-to-Analog Conver

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PCM1782DBQ TI

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PCM1782DBQR TI

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PCM1782DBQRG4 TI

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PCM1789IPWRQ1 TI

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 		24-Bit, 192-kHz Sampling, Enhanced Multi-Leve

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