BurrBrown Products

from Texas Instruments

FEATURES

DESCRIPTION

PCM3052A

SLES160 – NOVEMBER 2005

24-BIT, 96-kHz STEREO AUDIO CODEC WITH

MICROPHONE AMPLIFIER, BIAS, MUXTIPLEXER, AND PGA

•

Multiple Functions With I2C Interface:

•

Microphone Amplifier and Bias

– Digital De-Emphasis: 32-, 44.1-, 48-kHz

– Monaural Microphone Amplifier: 34-dB Gain

– Zipper-Noise-Free Digital Attenuation and

at Differential Input

Soft Mute for DAC

– Microphone Bias: 1 mA at 3.75 V

– HPF Bypass Control for ADC

•

Multiplexer and PGA

– S/PDIF Output Control

– Multiplex of Stereo Single-Ended Line

– Power Down: ADC/DAC Independently

Inputs and Monaural Microphone Amplifier

•

External Power-Down Pin:

– 0.1 Vrms to 1.5 Vrms Full-Scale Input Range

– ADC/DAC Simultaneously

– 22-k

Ω Input Resistance at 0.1-Vrms Input

•

Audio Data Format: 24-Bit I2S Only

– 20 dB to –4 dB/range, 1 dB/step PGA

•

Sampling Rate:

•

Reference Output:

±10 mA at 2.5 V

– 16–96 kHz for Both ADC and DAC

•

24-Bit Delta-Sigma ADC and DAC

•

System Clock: 256 fS Only

•

Stereo ADC:

•

Dual Power Supplies:

– Full-Scale Input: 3 Vp-p

– 5 V for Analog and 3.3 V for Digital

– Antialiasing Filter Included

•

Package: VQFN-32

– 1/64 Decimation Filter:

• Pass-Band Ripple: ±0.05 dB

• Stop-Band Attenuation: –65 dB

The PCM3052A is a low-cost, single-chip, 24-bit

stereo

audio

codec

(ADC

and

DAC)

with

– On-Chip High-Pass Filter: 0.91 Hz at

single-ended analog voltage input and output. It also

fS = 48 kHz

has an analog front end consisting of a 34-dB

– High Performance:

microphone amplifier, microphone bias generator, 2

• THD+N: –94 dB (Typical)

stereo multiplexers, and a wide-range PGA. Analog-

to-digital

converters

(ADCs)

employ

delta-sigma

• SNR: 101 dB (Typical)

modulation with 64-times oversampling. On the other

• Dynamic Range: 101 dB (Typical)

hand, digital-to-analog converters (DACs) employ

•

Stereo DAC:

modulation with 64- and 128-times oversampling.

ADCs include a digital decimation filter with a

– Single-Ended Voltage Output: 4 Vp-p

high-pass

filter,

and

DACs

include

an

8-times

– Analog Low-Pass Filter Included

oversampling

digital

interpolation

filter.

The

–

×8 Oversampling Digital Filter:

PCM3052A has many functions which are controlled

• Pass-Band Ripple: ±0.03 dB

using the I2C interface: DAC digital de-emphasis,

digital attenuation, soft mute etc. The PCM3052A

• Stop-Band Attenuation: –50 dB

also has an S/PDIF output pin for the DAC digital

– High Performance:

input. The power-down mode, which works on ADCs

• THD+N: –97 dB (Typical)

and DACs simultaneously, is provided by an external

pin. The PCM3052A is suitable for a wide variety of

• SNR: 105 dB (Typical)

cost-sensitive

PC

audio

(recorder

and

player)

• Dynamic Range: 104 dB (Typical)

applications where good performance is required.

•

S/PDIF Output for DAC Digital Input

The PCM3052A is fabricated using a highly advanced

A

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.

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.