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PCM1748

更新时间： 2024-11-14 02:58:51
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德州仪器 - TI /
页数 文件大小 规格书
38页 993K
描述
Audio Digital-to-Analog Converter

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PCM1748 数据手册

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PCM1748  
www.ti.com  
SBAS165B–MAY 2001–REVISED APRIL 2005  
24-Bit, 96-kHz Sampling, Enhanced Multilevel, Delta-Sigma,  
Audio Digital-to-Analog Converter  
FEATURES  
APPLICATIONS  
•
•
•
•
•
•
AV Receivers  
DVD Movie Players  
DVD Add-On Cards for High-End PCs  
HDTV Receivers  
Car Audio Systems  
•
24-Bit Resolution  
•
Analog Performance (VCC = 5 V):  
– Dynamic Range:  
• 106 dB, Typical (PCM1748KE)  
• 100 dB, Typical (PCM1748E)  
– SNR:  
Other Applications Requiring 24-Bit Audio  
• 106 dB, Typical (PCM1748KE)  
• 100 dB, Typical (PCM1748E)  
– THD+N:  
DESCRIPTION  
The PCM1748 is a CMOS, monolithic, integrated  
circuit which includes stereo digital-to-analog con-  
verters (DAC) and support circuitry in a small  
SSOP-16 package. The data converters use Texas  
Instruments' enhanced multilevel delta-sigma archi-  
tecture that employs fourth-order noise shaping and  
8-level amplitude quantization to achieve excellent  
dynamic performance and improved tolerance to  
clock jitter. The PCM1748 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 100 kHz are supported. A full  
set of user-programmable functions is accessible  
through a 3-wire serial-control port that supports  
register write functions.  
• 0.002%, Typical (PCM1748KE)  
• 0.003%, Typical (PCM1748E)  
– Full-Scale Output: 3.1 Vp-p, Typical  
8× Oversampling Digital Filter:  
– Stop-Band Attenuation: –55 dB  
– Pass-Band Ripple: ±0.03 dB  
Sampling Frequency: 5 kHz to 100 kHz  
•
•
•
System Clock: 256 fS, 384 fS, 512 fS, 768 fS  
With Autodetect  
•
•
Accepts 16-, 18-, 20-, and 24-Bit Audio Data  
Data Formats: Standard, I2S, and  
Left-Justified  
•
User-Programmable Mode Controls:  
– Digital Attenuation: 0 dB to –63 dB,  
0.5 dB/Step  
– Digital De-Emphasis  
– Digital Filter Rolloff: Sharp or Slow  
– Soft Mute  
– Zero Flags for Each Output  
Dual-Supply Operation:  
– 5-V Analog  
•
– 3.3-V Digital  
•
•
5-V Tolerant Digital Inputs  
Small SSOP-16 Package  
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.  
FilterPro is a trademark of Texas Instruments.  
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 © 2001–2005, Texas Instruments Incorporated  
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PCM1748 替代型号

型号 品牌 替代类型 描述 数据表
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PCM1748E/2KG4 TI

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PCM1748EG/2K TI

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 		106dB SNR Stereo DAC 16-SSOP -25 to 85
PCM1748KE BB

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 		24-Bit, 96kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER
PCM1748KE TI

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 		Audio Digital-to-Analog Converter
PCM1748KE/2K BB

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 		24-Bit, 96kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER
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