PCM3052A Datasheet, PDF (1/45 Pages) Burr-Brown (TI) – 24-BIT, 96-kHz STEREO AUDIO CODEC WITH MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA

BurrĆBrown Products
from Texas Instruments
PCM3052A
SLES160 – NOVEMBER 2005
24-BIT, 96-kHz STEREO AUDIO CODEC WITH
MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA
FEATURES
• Microphone Amplifier and Bias
– Monaural Microphone Amplifier: 34-dB Gain
at Differential Input
– Microphone Bias: 1 mA at 3.75 V
• Multiplexer and PGA
– Multiplex of Stereo Single-Ended Line
Inputs and Monaural Microphone Amplifier
– 0.1 Vrms to 1.5 Vrms Full-Scale Input Range
– 22-kΩ Input Resistance at 0.1-Vrms Input
– 20 dB to –4 dB/range, 1 dB/step PGA
• Reference Output: ±10 mA at 2.5 V
• 24-Bit Delta-Sigma ADC and DAC
• Stereo ADC:
– Full-Scale Input: 3 Vp-p
– Antialiasing Filter Included
– 1/64 Decimation Filter:
• Pass-Band Ripple: ±0.05 dB
• Stop-Band Attenuation: –65 dB
– On-Chip High-Pass Filter: 0.91 Hz at
f_S = 48 kHz
– High Performance:
• THD+N: –94 dB (Typical)
• SNR: 101 dB (Typical)
• Dynamic Range: 101 dB (Typical)
• Stereo DAC:
– Single-Ended Voltage Output: 4 Vp-p
– Analog Low-Pass Filter Included
– ×8 Oversampling Digital Filter:
• Pass-Band Ripple: ±0.03 dB
• Stop-Band Attenuation: –50 dB
– High Performance:
• THD+N: –97 dB (Typical)
• SNR: 105 dB (Typical)
• Dynamic Range: 104 dB (Typical)
• S/PDIF Output for DAC Digital Input
A
• Multiple Functions With I²C Interface:
– Digital De-Emphasis: 32-, 44.1-, 48-kHz
– Zipper-Noise-Free Digital Attenuation and
Soft Mute for DAC
– HPF Bypass Control for ADC
– S/PDIF Output Control
– Power Down: ADC/DAC Independently
• External Power-Down Pin:
– ADC/DAC Simultaneously
• Audio Data Format: 24-Bit I²S Only
• Sampling Rate:
– 16–96 kHz for Both ADC and DAC
• System Clock: 256 f_S Only
• Dual Power Supplies:
– 5 V for Analog and 3.3 V for Digital
• Package: VQFN-32
DESCRIPTION
The PCM3052A is a low-cost, single-chip, 24-bit
stereo audio codec (ADC and DAC) with
single-ended analog voltage input and output. It also
has an analog front end consisting of a 34-dB
microphone amplifier, microphone bias generator, 2
stereo multiplexers, and a wide-range PGA. Analog-
to-digital converters (ADCs) employ delta-sigma
modulation with 64-times oversampling. On the other
hand, digital-to-analog converters (DACs) employ
modulation with 64- and 128-times oversampling.
ADCs include a digital decimation filter with a
high-pass filter, and DACs include an 8-times
oversampling digital interpolation filter. The
PCM3052A has many functions which are controlled
using the I²C interface: DAC digital de-emphasis,
digital attenuation, soft mute etc. The PCM3052A
also has an S/PDIF output pin for the DAC digital
input. The power-down mode, which works on ADCs
and DACs simultaneously, is provided by an external
pin. The PCM3052A is suitable for a wide variety of
cost-sensitive PC audio (recorder and player)
applications where good performance is required.
The PCM3052A is fabricated using a highly advanced
CMOS process and is available in a small 32-pin
VQFN package.
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.
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, Texas Instruments Incorporated