PCM3002_07 Datasheet, PDF (1/39 Pages) Burr-Brown (TI) – 16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS

BurrĆBrown Products
from Texas Instruments
PCM3002
PCM3003
SBAS079A – OCTOBER 2000 – REVISED OCTOBER 2004
16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS
FEATURES
• Monolithic 20-Bit ∆Σ ADC and DAC
• 16/20-Bit Input/Output Data
• Software Control: PCM3002
• Hardware Control: PCM3003
• Stereo ADC:
– Single-Ended Voltage Input
– Antialiasing Filter
– 64× Oversampling
– High Performance
• THD+N: –86 dB
• SNR: 90 dB
• Dynamic Range: 90 dB
• Stereo DAC:
– Single-Ended Voltage Output
– Analog Low-Pass Filter
– 64× Oversampling
– High Performance
• THD+N: –86 dB
• SNR: 94 dB
• Dynamic Range: 94 dB
• Special Features (PCM3002, PCM3003)
– Digital De-Emphasis: 32 kHz, 44.1 kHz,
48 kHz
– Power Down: ADC/DAC Independent
• Special Features (PCM3002)
– Digital Attenuation (256 Steps)
– Soft Mute
– Digital Loopback
– Four Alternative Audio Data Formats
• Sampling Rate: 4 kHz to 48 kHz
• Single 3-V Power Supply
• Small Package: SSOP-24
APPLICATIONS
• DVC Applications
• DSC Applications
• Portable/Mobile Audio Applications
DESCRIPTION
The PCM3002 and PCM3003 are low-cost,
single-chip stereo audio codecs (analog-to-digital and
digital-to-analog converters) with single-ended analog
voltage input and output.
The ADCs and DACs employ delta-sigma modulation
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 PCM3002 and PCM3003
operate with left-justified (ADC) and right-justified
(DAC) formats, while the PCM3002 also supports
other formats, including the I²S data format.
The PCM3002 and PCM3003 provide a power-down
mode that operates on the ADCs and DACs indepen-
dently.
The PCM3002 and PCM3003 are fabricated using a
highly advanced CMOS process, and are available in
a 24-pin SSOP package. The PCM3002 and
PCM3003 are suitable for a wide variety of
cost-sensitive consumer applications where good per-
formance is required.
The PCM3002 programmable functions are controlled
by software. The PCM3003 functions, which are
controlled by hardware, include de-emphasis,
power-down, and audio data format selections.
Lch In
Rch In
Analog Front-End
Lch Out
Rch Out
Low-Pass Filter
and
Output Buffer
* PCM3002 Only
Delta-Sigma
Modulator
Multilevel
Delta-Sigma
Modulator
Digital
Decimation
Filter
Digital
Interpolation
Filter
Digital Out
Serial Interface
Digital In
*
and
Mode Control
Mode Control
System Clock
B0006-01
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