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DESCRIPTION

PCM1748

SBAS165B – MAY 2001 – REVISED APRIL 2005

24-Bit, 96-kHz Sampling, Enhanced Multilevel, Delta-Sigma,

Audio Digital-to-Analog Converter

•

AV Receivers

•

24-Bit Resolution

•

DVD Movie Players

•

Analog Performance (VCC = 5 V):

•

DVD Add-On Cards for High-End PCs

– Dynamic Range:

•

HDTV Receivers

• 106 dB, Typical (PCM1748KE)

•

Car Audio Systems

• 100 dB, Typical (PCM1748E)

•

Other Applications Requiring 24-Bit Audio

– SNR:

• 106 dB, Typical (PCM1748KE)

• 100 dB, Typical (PCM1748E)

The PCM1748 is a CMOS, monolithic, integrated

– THD+N:

circuit which includes stereo digital-to-analog con-

verters (DAC) and support circuitry in a small

• 0.002%, Typical (PCM1748KE)

SSOP-16 package. The data converters use Texas

• 0.003%, Typical (PCM1748E)

Instruments' enhanced multilevel delta-sigma archi-

– Full-Scale Output: 3.1 Vp-p, Typical

tecture that employs fourth-order noise shaping and

•

8× Oversampling Digital Filter:

8-level amplitude quantization to achieve excellent

dynamic performance and improved tolerance to

– Stop-Band Attenuation: –55 dB

clock jitter. The PCM1748 accepts industry-standard

– Pass-Band Ripple: ±0.03 dB

audio data formats with 16- to 24-bit data, providing

•

Sampling Frequency: 5 kHz to 100 kHz

easy interfacing to audio DSP and decoder chips.

Sampling rates up to 100 kHz are supported. A full

•

System Clock: 256 fS, 384 fS, 512 fS, 768 fS

set of user-programmable functions is accessible

With Autodetect

through a 3-wire serial-control port that supports

•

Accepts 16-, 18-, 20-, and 24-Bit Audio Data

register write functions.

•

Data Formats: Standard, I

2S, 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.

Copyright © 2001–2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.