PCM2906B

具有线性输出和 S/PDIF 的、总线供电的立体声 USB 编解码器

The is Texas Instruments" single-chip, USB, stereo audio codec with a USB-compliant full-speed protocol controller and S/PDIF. The USB protocol controller requires no software code, but the USB descriptors can be modified in some areas for example, vendor ID and/or product ID. The PCM2906B employs SpAct architecture, "s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback and record with low clock jitter as well as independent playback and record sampling rates.

.

On-Chip USB Interface:

.

With Full-Speed Transceivers

.

Fully Compliant with USB 2.0 Specification

.

Certified by USB-IF

.

Partially Programmable Descriptors1

.

USB Adaptive Mode for Playback

.

USB Asynchronous Mode for Record

.

Bus Powered

.

16-Bit Delta-Sigma ADC and DAC

.

Sampling Rate:

.

DAC: 32, 44.1, 48 kHz

.

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

.

On-Chip Clock Generator with Single 12-MHz Clock Source

.

S/PDIF Input/Output

.

Single Power Supply:

.

5 V Typical VBUS

.

Stereo ADC:

.

Analog Performance at VBUS = 5 V:

.

THD+N = 0.01%

.

SNR = 89 dB

.

Dynamic Range = 89 dB

.

Decimation Digital Filter:

.

Passband Ripple = ±0.05 dB

.

Stop-Band Attenuation = -65 dB

.

Single-Ended Voltage Input

.

Antialiasing Filter Included

.

Digital HPF Included

* Stereo DAC:

.

Analog Performance at VBUS = 5 V:

.

THD+N = 0.005%

.

SNR = 96 dB

.

Dynamic Range = 93 dB

.

Oversampling Digital Filter:

.

Passband Ripple = ±

.

0.1 dBStop-Band Attenuation = -43 dB

* Single-Ended Voltage Output

* Analog LPF Included

* Multifunctions:

.

Human Interface Device HID Function:

.

Volume and Mute Controls

.

Suspend Flag Function

* 28-Pin SSOP Package

* APPLICATIONS

.

USB Audio Speaker

.

USB Headset

.

USB Monitor

.

USB Audio Interface Box

1The descriptor can be modified by changing a mask.

SpAct is a trademark of Texas Instruments.

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