UAC 357xB UAC 357xB Universal Serial Bus - SemiconductorStore ...
UAC 357xB UAC 357xB Universal Serial Bus - SemiconductorStore ...
UAC 357xB UAC 357xB Universal Serial Bus - SemiconductorStore ...
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PRODUCT INFORMATION<br />
<strong>UAC</strong> <strong>357xB</strong><br />
Aug/2004<br />
Audio Features<br />
◆ Independent adaptive sample rates of<br />
6.4 to 48 kHz for USB recording and<br />
playback (enhanced full-duplex)<br />
PC<br />
◆ Audio baseband control: bass, treble,<br />
loudness, volume, balance, and mute<br />
◆ Dynamic bass management<br />
(Micronas Bass MB)<br />
USB<br />
<strong>UAC</strong><br />
3574B<br />
L, R<br />
Headset<br />
◆ Digital speaker equalizer<br />
(5-band parametric equalizer)<br />
◆ THD better than −90 dB and SNR of<br />
typically 96 dB for D/A converters<br />
◆ THD better than −90 dB and SNR of<br />
typically 92 dB for A/D converters<br />
Fig. 1: Typical headset application<br />
◆ Power supply rejection ratio >95 dB for<br />
analog outputs<br />
Members of the <strong>UAC</strong> <strong>357xB</strong> Family<br />
The three family members are optimized for<br />
different applications and needs. The<br />
<strong>UAC</strong> 3574B is ideally suited for self-powered<br />
USB headset applications. The<br />
<strong>UAC</strong> 3575B offers additional stereo line<br />
input support. The <strong>UAC</strong> 3576B adds the<br />
flexibility to boot customized firmware from<br />
an external EEPROM of up to 8 kB. A firmware<br />
SDK implementing all standard USB<br />
control, audio, and HID class features is<br />
available.<br />
Version<br />
<strong>UAC</strong> 3574B<br />
<strong>UAC</strong> 3575B<br />
Description<br />
USB headset<br />
USB codec<br />
D+<br />
D−<br />
Buttons<br />
and LEDs<br />
I 2 C<br />
USB<br />
Interface<br />
ROM<br />
RAM<br />
I 2 S<br />
DSP<br />
ROM<br />
DAC<br />
ADC<br />
Volume<br />
and<br />
Headphone<br />
Amplifier<br />
Programmable<br />
Gain<br />
OUTL<br />
OUTC<br />
OUTR<br />
Mic In L<br />
Mic In R<br />
Line In L<br />
Line In R<br />
<strong>UAC</strong> 3576B<br />
USB codec – with 8 kB<br />
RAM for firmware download<br />
Fig. 2: Block diagram of the <strong>UAC</strong> <strong>357xB</strong><br />
All information and data contained in this product information are without any commitment, are not to be considered<br />
as an offer for conclusion of a contract, nor shall they be construed as to create any liability. Product or<br />
development sample availability and delivery are exclusively subject to our respective order confirmation form. By<br />
this publication, Micronas GmbH does not assume responsibility for patent infringements or other rights of third<br />
parties which may result from its use.<br />
No part of this publication may be reproduced, photocopied,<br />
stored on a retrieval system, or transmitted<br />
without the express written consent of Micronas GmbH.<br />
Edition Aug. 31, 2004; Order No. 6251-650-1PI<br />
Micronas GmbH ⋅ Hans-Bunte-Strasse 19 ⋅ D-79108 Freiburg (Germany) ⋅ P.O. Box 840 ⋅ D-79008 Freiburg (Germany)<br />
Tel. +49-761-517-0 ⋅ Fax +49-761-517-2174 ⋅ E-mail: docservice@micronas.com ⋅ www.micronas.com
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