BurrBrown Products

from Texas Instruments

FEATURES

APPLICATIONS

DESCRIPTION

PCM1780, PCM1781, PCM1782

SLES132A – MARCH 2005 – REVISED APRIL 2005

24-Bit, 192-kHz Sampling, Enhanced Multilevel, Delta-Sigma,

Audio Digital-to-Analog Converter

•

A/V Receivers

•

24-Bit Resolution

•

DVD Movie Players

•

•

DVD Add-On Cards For High-End PCs

– Dynamic Range: 106 dB

•

DVD Audio Players

– SNR: 106 dB, Typical

•

HDTV Receivers

– THD+N: 0.002%, Typical

•

Car Audio Systems

– Full-Scale Output: 3.9 Vp-p, Typical

•

Other Applications Requiring 24-Bit Audio

•

4×/8× Oversampling Digital Filter:

– Stop-Band Attenuation: –50 dB

– Pass-Band Ripple: ±0.04 dB

The PCM1780/81/82 is a CMOS, monolithic, inte-

•

Sampling Frequency: 5 kHz to 200 kHz

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

•

Software Control (PCM1780, PCM1782):

excellent dynamic performance and improved toler-

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

ance to clock jitter. The PCM1780/81/82 accepts

industry standard audio data formats with 16- to

– Formats: Right-Justified, I

24-bit data, providing easy interfacing to audio DSP

Left-Justified

and decoder chips. Sampling rates up to 200 kHz are

– Digital Attenuation: Mode Selectable

supported. The PCM1780/82 provides a full set of

• 0 dB to –63 dB, 0.5 dB/step

user-programmable functions through a three-wire

serial control port, which supports register write

• 0 dB to –100 dB, 1 dB/step

functions. The PCM1781 provides a subset of

– Digital De-Emphasis

user-programmable functions through four control

– Digital Filter Rolloff: Sharp or Slow

pins.

– Soft Mute

The PCM1780 is pin-compatible with the PCM1680

– Zero Flags for Each Output

(8-channel DAC).

– Open-Drain Output Zero Flag (PCM1782)

•

Hardware Control (PCM1781):

– I

– 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.

Copyright © 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.