ES9281A/80A PRO Product Brief

April 15, 2021

0.2.5

ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 • WWW.ESSTECH.COM

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Ordering Information

Part Number

Description

Package

ES9281AC PRO

ES9281AQ PRO

SABRE 32-bit 2-channel USB audio D/A converter with headphone amplifier, PLL,

Jack Detect, multiple ADCs, support for both analog and digital mics, and analog/digital

mixing

90-ball CSP

88 WQFN

ES9280AC PRO

ES9280AQ PRO

All ES9281AQ Pro functionality except MQA support.

90-ball CSP

88 WQFN

Revision History

Current Version 0.2.5

Rev.

Date

Notes

0.2.3

June 29, 2020

Initial release of PB

0.2.4

April 7, 2021

Updated trademark in description & functional block diagram

0.2.5

April 13, 2021

Minor wording updates

© 2021 ESS Technology, Inc.

ESS IC’s are not intended, authorized, or warranted for use as components in military applications, medical devices or life support systems. ESS assumes no liability and disclaims

any expressed, implied or statutory warranty for use of ESS IC’s in such unsuitable applications.

No part of this publication may be reproduced, stored in a retrieval system, transmitted, or translated in any form or by any means, electronic, mechanical, manual, optical, or otherwise,

without the prior written permission of ESS Technology, Inc. ESS Technology, Inc. makes no representations or warranties regarding the content of this document. All specifications

are subject to change without prior notice. ESS Technology, Inc. assumes no responsibility for any errors contained herein. U.S. patents pending.