PCM1748
PCM1748
SBAS165A – MAY 2001
24-Bit, 96kHz Sampling
Enhanced Multilevel, Delta-Sigma, Audio
DIGITAL-TO-ANALOG CONVERTER
FEATURES
APPLICATIONS
●
24-BIT RESOLUTION
● A/V RECEIVERS
●
ANALOG PERFORMANCE (VCC = +5V):
Dynamic Range: 106dB typ (PCM1748KE)
100dB typ (PCM1748E)
● DVD MOVIE PLAYERS
● DVD ADD-ON CARDS FOR HIGH-END PCs
● HDTV RECEIVERS
SNR: 106dB typ (PCM1748KE)
100dB typ (PCM1748E)
● CAR AUDIO SYSTEMS
● OTHER MULTICHANNEL AUDIO SYSTEMS
THD+N: 0.002% typ (PCM1748KE)
0.003% typ (PCM1748E)
Full-Scale Output: 3.1Vp-p typ
DESCRIPTION
●
8x OVERSAMPLING DIGITAL FILTER:
Stopband Attenuation: –55dB
Passband Ripple: ±0.03dB
The PCM1748 is a CMOS, monolithic, integrated circuit which
includes stereo Digital-to-Analog Converters (DACs) and support
circuitry in a small SSOP-16 package. The data converters utilize
Texas Instrument’s enhanced multilevel delta-sigma architecture
that employs fourth-order noise shaping and 8-level amplitude
quantization to achieve excellent dynamic performance and im-
proved 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
100kHz are supported. A full set of user-programmable functions
are accessible through a 3-wire serial control port that supports
register write functions.
●
●
SAMPLING FREQUENCY: 5kHz to 100kHz
SYSTEM CLOCK: 256, 384, 512, 768fS with
Auto Detect
●
●
ACCEPTS 16-, 18-, 20-, AND 24-BIT AUDIO
DATAzx
DATA FORMATS: Standard, I2S, and
Left-Justified
● USER-PROGRAMMABLE MODE CONTROLS:
Digital Attenuation: 0dB to –63dB, 0.5dB/Step
Digital De-Emphasis
Digital Filter Roll-Off: Sharp or Slow
Soft Mute
Zero Flags for Each Output
●
DUAL-SUPPLY OPERATION:
+5V Analog, +3.3V Digital
●
●
●
5V TOLERANT DIGITAL INPUTS
SMALL SSOP-16 PACKAGE
SAME PACKAGE SIZE AS SOP-8
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.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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