PCM1780_15 Datasheet, PDF (1/35 Pages) Texas Instruments – Audio Digital-to-Analog Converter

BurrĆBrown Products
from Texas Instruments
PCM1780, PCM1781, PCM1782
SLES132B – MARCH 2005 – REVISED AUGUST 2006
24-Bit, 192-kHz Sampling, Enhanced Multilevel, Delta-Sigma,
Audio Digital-to-Analog Converter
FEATURES
• 24-Bit Resolution
• Analog Performance (V_CC = 5 V):
– Dynamic Range: 106 dB
– SNR: 106 dB, Typical
– THD+N: 0.002%, Typical
– 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
• System Clock: 128 f_S, 192 f_S, 256 f_S, 384 f_S,
512 f_S, 768 f_S, 1152 f_S 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
– Digital Filter Rolloff: Sharp or Slow
– Soft Mute
– 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
APPLICATIONS
• A/V Receivers
• DVD Movie Players
• DVD Add-On Cards For High-End PCs
• DVD Audio Players
• HDTV Receivers
• Car Audio Systems
• Other Applications Requiring 24-Bit Audio
DESCRIPTION
The PCM1780/81/82 is a CMOS, monolithic,
integrated circuit, which includes stereo
digital-to-analog converters and support circuitry in a
small 16-lead SSOP package. The data converters
use TI’s enhanced multilevel delta-sigma architecture
to achieve excellent dynamic performance and
improved tolerance 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
functions. The PCM1781 provides a subset of
user-programmable functions through four control
pins.
The PCM1780 is pin-compatible with the PCM1680
(8-channel DAC).
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 © 2005–2006, Texas Instruments Incorporated