PCM2903C

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S/PDIF I/O

USB

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PCM2903C

SBFS038A – JUNE 2012 – REVISED SEPTEMBER 2015

PCM2903C Stereo Audio Codec With USB Interface,

Single-Ended Analog Input/Output, and S/PDIF

1 Features

–

SNR = 96 dB

–

Dynamic Range = 93 dB

1

•

On-Chip USB Interface:

–

Oversampling Digital Filter:

–

With Full-Speed Transceivers

–

Passband Ripple = ±0.1 dB

–

Fully Compliant With USB 2.0 Specification

–

Stop-Band Attenuation = –43 dB

–

Certified by USB-IF

–

Single-Ended Voltage Output

–

USB Adaptive Mode for Playback

–

Analog LPF Included

–

USB Asynchronous Mode for Record

•

Multifunctions:

–

Self-Powered

–

Human Interface Device (HID) Function:

•

16-Bit Delta-Sigma ADC and DAC

–

Volume and Mute Controls

•

Sampling Rates:

–

Suspend Flag Function

–

DAC: 32, 44.1, 48 kHz

•

28-Pin SSOP Package

–

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

•

On-Chip Clock Generator With Single 12-MHz

2 Applications

Clock Source

•

USB Audio Speaker

•

S/PDIF Input/Output

•

USB Headset

•

Single Power Supply:

•

USB Monitor

–

3.3 V Typical

•

USB Audio Interface Box

•

Stereo ADC:

–

3 Description

The PCM2903C is TI's single-chip, USB, stereo audio

–

THD+N = 0.01%

codec with a USB-compliant full-speed protocol

–

SNR = 89 dB

controller and S/PDIF. The USB protocol controller

requires no software code. The PCM2903C employs

–

Dynamic Range = 89 dB

SpAct™

architecture,

TI's

unique

system

that

–

Decimation Digital Filter:

recovers the audio clock from USB packet data. On-

–

Passband Ripple = ±0.05 dB

chip analog PLLs with SpAct enable playback and

record with low clock jitter, as well as independent

–

Stop-Band Attenuation = –65 dB

playback and record sampling rates.

–

Single-Ended Voltage Input

–

Antialiasing Filter Included

Device Information(1)

–

Digital HPF Included

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Stereo DAC:

PCM2903C

SSOP (28)

10.20 mm × 5.30 mm

–

(1) For all available packages, see the orderable addendum at

the end of the datas heet.

–

THD+N = 0.005%

Simplified Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.