PCM3000_08 Datasheet, PDF (1/40 Pages) Texas Instruments – SINGLE-ENDED ANALOG INPUT/OUTPUT

BurrĆBrown Products
from Texas Instruments
PCM3000
PCM3001
SBAS055A – OCTOBER 2000 – REVISED OCTOBER 2004
18-BIT STEREO AUDIO CODEC, SINGLE-ENDED ANALOG INPUT/OUTPUT
FEATURES
• Monolithic 18-Bit ∆Σ ADC and DAC
• 16- or 18-Bit Input/Output Data
• Accepts Seven Alternate Formats
• Stereo ADC:
– Single-Ended Voltage Input
– 64× Oversampling Digital Filter
• Pass-Band Ripple: ±0.05 dB
• Stop-Band Attenuation: –65 dB
– High Performance:
• THD+N: –88 dB
• SNR: 94 dB
• Dynamic Range: 94 dB
– Digital High-Pass Filter
• Stereo DAC
– Single-Ended Voltage Outut
– Analog Low-Pass Filter
– 8× Oversampling Digital Filter
• Pass-Band Ripple: ±0.17 dB
• Stop-Band Attenuation: 35 dB
– High Performance:
• THD+N: –90 dB
• SNR: 98 dB
• Dynamic Range: 97 dB
• Special Features (PCM3000)
– Digital De-Emphasis
– Digital Attenuation (256 Steps)
– Soft Mute
– Digital Loopback
• Sample Rate: 4 kHz to 48 kHz
• System Clock: 256 f_s, 384 f_s, 512 f_s
• Single 5-V Power Supply
• Small Package: SSOP-28
APPLICATIONS
• Sampling Keyboards
• Digital Mixers
• Mini-Disk Recorders
• Hard-Disk Recorders
• Karaoke Systems
• DSP-Based Car Stereo
• DAT Recorders
• Video Conferencing
DESCRIPTION
The PCM3000/3001 is a low-cost, single-chip stereo
audio codec (analog-to-digital and digital-to-analog
converter) with single-ended analog voltage input and
output.
Both ADCs and DACs employ delta-sigma modu-
lation with 64-times oversampling. The ADCs include
a digital decimation filter and the DACs include an
8-times oversampling digital interpolation filter. The
DACs also include digital attenuation, de-emphasis,
infinite zero detection and soft mute to form a
complete subsystem. The PCM3000/3001 operates
with left-justified, right-justified, I²S or DSP data
formats.
The PCM3000 can be programmed with a three-wire
serial interface for special features and data formats.
The PCM3001 can be pin-programmed for data
formats.
The PCM3000 and PCM3001 are fabricated using a
highly advanced CMOS process and are available in
a small 28-pin SSOP package. The PCM3000/3001
are suitable for a wide variety of cost-sensitive
consumer applications where good performance is
required.
Lch In
Rch In
Lch Out
Rch Out
Analog Front-End
Low-Pass Filter
and
Output Buffer
Delta-Sigma
Modulator
Multilevel
Delta-Sigma
Modulator
Digital
Decimation
Filter
Digital
Interpolation
Filter
Serial Interface
and
Mode Control
Digital Out
Digital In
Mode Control
System Clock
B0006-03
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 © 2000–2004, Texas Instruments Incorporated