BurrBrown Products

from Texas Instruments

1

FEATURES

APPLICATIONS

DESCRIPTION

PCM2912

SLES216 – FEBRUARY 2008

AUDIO CODEC WITH USB INTERFACE,

MONO MICROPHONE INPUT AND STEREO HEADPHONE OUTPUT

23

• On-Chip USB Interface:

–

Oversampling Digital Filter

–

With Full-Speed Transceivers

–

Pass-Band Ripple: ±0.1 dB

–

Fully Compliant with USB 2.0 Specification

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Stop-Band Attenuation: –43 dB

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Certified By USB-IF

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Single-Ended Voltage Output

–

Partially Programmable Descriptors

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Analog LPF Included

–

Adaptive Isochronous Transfer for

–

Sidetone PGA, Output PGA, and HP

Playback

Amplifier

–

Asynchronous Isochronous Transfer for

• Multifunctions:

Record

–

Suspend, Playback, and Record Status Flag

–

Bus Powered

–

Microphone Amplifier, Mute, and Gain

• 16-Bit Delta-Sigma ADC and DAC

Control

• Sampling Rate:

• Pop/Click Noise Free

–

8, 11.025, 16, 22.05, 32, 44.1, 48 kHz

• Single Power Supply: 5 V Typ (V

BUS)

• On-Chip Clock Generator:

• Package: 32-Pin TQFP

–

With Single 6-MHz Clock Source

• Mono ADC with Microphone Input

• USB Headset

–

Analog Performance at VBUS = 5 V:

• USB Headphone

–

THD+N: 0.01%

• USB Speaker

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SNR: 92 dB

• USB Featured Consumer Audio Product

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Dynamic Range: 90 dB

• USB Audio Interface Box

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Decimation Digital Filter

• USB Monitor

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Pass-Band Ripple: ±0.05 dB

• Video Conference System

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Stop-Band Attenuation: –65 dB

–

Single-Ended Voltage Input

–

Antialiasing Filter Included

The PCM2912 is the Texas Instruments single-chip,

USB stereo audio CODEC with USB 2.0-compliant

–

Digital HPF Included

full-speed protocol controller and analog front end

–

Microphone Bias, Microphone Amplifier,

(AFE) function for headset application. The USB

and Input PGA

protocol controller works with no software code, but

• Stereo DAC With Headphone Output

USB descriptors can be modified on request(1). The

PCM2912 employs SpAct™ architecture, TI’s unique

–

Analog Performance at VBUS = 5.0 V:

system that recovers the audio clock from USB

–

THD+N: 0.01% (RL > 10 kΩ)

packet data. On chip analog PLLs with SpAct enables

–

THD+N: 0.02% (RL = 32 Ω)

independent playback and record sampling rate with

low clock jitters.

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SNR: 92 dB

–

Dynamic Range: 90 dB

–

PO: 13 mW (RL = 32 Ω)

–

PO: 25 mW (RL = 16 Ω)

(1)

The descriptor can be modified by changing a mask; contact

your representative about the details.

1

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.

2

SpAct is a trademark of Texas Instruments.

3

Audio Precision, System Two are trademarks of Audio Precision, Inc..

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, 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.