BurrBrown Products

from Texas Instruments

FEATURES

APPLICATIONS

DESCRIPTION

PCM1780, PCM1781, PCM1782

SLES132B – MARCH 2005 – REVISED AUGUST 2006

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,

•

Sampling Frequency: 5 kHz to 200 kHz

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

•

Software Control (PCM1780, PCM1782):

to achieve excellent dynamic performance and

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

improved

tolerance

to

clock

jitter.

The

PCM1780/81/82 accepts industry standard audio

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

Left-Justified

interfacing

to

audio

DSP

and

decoder

chips.

– Digital Attenuation: Mode Selectable

Sampling rates up to 200 kHz are supported. The

• 0 dB to –63 dB, 0.5 dB/step

PCM1780/82

provides

a

full

set

of

user-programmable functions through a three-wire

• 0 dB to –100 dB, 1 dB/step

serial control port, which supports register write

– Digital De-Emphasis

functions. The PCM1781 provides a subset of

– Digital Filter Rolloff: Sharp or Slow

user-programmable functions through four control

pins.

– Soft Mute

– Zero Flags for Each Output

The PCM1780 is pin-compatible with the PCM1680

(8-channel DAC).

– Open-Drain Output Zero Flag (PCM1782)

•

Hardware Control (PCM1781):

– 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 other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005–2006, 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.