ES9281APRO ESS | Alldatasheet

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High performance USB DAC with Headphone Amplifier, MQA, ADC, PLL, Jack Detect, Mic, and A/D Mixing Product Brief s ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 • WWW.ESSTECH.COM Patented 32-bit HyperStream® II QUAD DAC™ Architecture SABRE32® technology 32-bit mobile audio DAC/HPA with high dynamic range & ultra-low distortion +130dB SNR, +122dBA DNR -112dB THD+N, 2.0Vrms into 100k -110dB THD+N, 1.0Vrms into 32 Supports synchronous and asynchronous sampling modes Experience Sabre32® technology all the way to headphones Hardware MQA Renderer (*ES9281A PRO only) Automatic stream lock to unfold decoded MQA stream Easily paired with software MQA core decoder Eliminates the need for complicated DAC filter tuning Analog PLL Simplifies clocking requirements and reduces PCB size and BOM cost 64-bit accumulator & 32-bit processing Distortion free signal processing Versatile digital audio input port Supports master/slave PCM (I2S, LJ 16-32-bit), DSD, DoP, SPDIF and MQA formats. Customizable filter characteristics 3 preset filters, programmable filter coefficients for custom sound signature 2 audio signal processors for custom filter architectures and analog/digital mixing Integrated ADCs for analog/digital mixing 102dBA DNR, -88dB THD+N 1Vrms 2 stereo PDM inputs, 1 differential analog input, 2 single-ended analog inputs Mix mode for side-tone and sound overlay on digital audio Integrated low noise DAC reference regulator Programmable voltage, reduced BOM cost and improved DNR Jack Detect with moisture protection Dual pin jack detect can wake the ES9281A/80A PRO automatically and prevent false positives Programmable analog gain Lower noise gain at real-life listening levels Eliminates external thin film resistors, reduces PCB size and BOM cost USB/I2S/DSD Bridge Mode 16 Channel I2S Bridge supports up to 8 input and 8 output channels simultaneously, including native DSD support Patented Time Domain Jitter Eliminator Unmatched audio clarity free from input clock jitter FEATURE DESCRIPTION s The ES9281A/80A PRO is a feature-rich 32-bit, 2-channel USB audio D/A converter with headphone amplifier, PLL, Jack Detect, ADC and support for both analog and digital m ics, and analog/digital mixing. It has been designed for professional applications (mixer consoles, digital audio workstations), audiophile-grade portable applications (headphones, headphone adapters and digital music players ), and consumer applications (USB DACs and A/V receivers). Using the critically acclaimed ESS patented HyperStream® II QUAD DAC™ architecture and Time Domain Jitter Eliminator, and advanced SABRE32® technology, the ES9281A/80A PRO delivers a performance level that will satisfy the most demanding audio enthusiast. The versatile audio input port accepts PCM, DSD , DoP, SPDIF and MQA* formats. The integrated SABRE DAC supports up to 32 -bit 384kHz PCM, 96k SPDIF and DSD1024 audio data via master/slave interface in synchronous and asynchronous sampling modes. The ES9281A/80A PRO is a licensed and standard -compliant MQA native hardware renderer. PCM Audio rates up to 768kHz are supported for USB -to-I2S mode and Native DSD is also supported over USB up to DSD512. The integrated class -G SABRE Headphone Amp supports up to 2Vrms outp ut. Programmable analog gain and integrated low-noise DAC reference regulator minimize noise gain at typical listening levels and reduce PCB area and BOM cost. The Jack Detect feature automatically wake s the device, accurately measures load impedance and prevents false positives due to moisture infiltration without any support from the application processor. Aux Mix mode allows analog signals to be seamlessly overlaid onto digital audio even during DSD , DoP or MQA* playback. ES9281A/80A PRO may be customized for any application with firmware-controlled behavior and both volatile and non-volatile memory options.

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 2

APPLICATIONS

  • USB headphones, USB headphone adapters, Digital music players, Portable multimedia players
  • Professional digital audio workstations and mixer consoles
  • Consumer and Audiophile USB DAC headphone amplifiers and A/V receivers Typical Application XOUT XIN ADDR SDAS SCLS RESETB PCM/DSD/DoP /SPDIF/MQA GPIO DGND AVDD AVCC_DAC VREF AGND PNEG OUT_L INB_L GSN_L IN_L INB_R OUT_R IN_R GSN_R ES9281PROApplication Processor 1.8V RT1 XTAL DCLK (BCK) DATA1 (WS) DATA2 (SD)I2C 1.8V DVDD AGND_L AGND_R AVCC_18AVCC_33 3.3V VCCA 3.3V C1_VC C2_VC PNEG_VC GPIO SDAM SCLM EEPROM PDM MIC Optional JDET1 JDET2 PB MBIAS AMIC_P AMIC_N ZREF OSC OSC ACLK2 ACLK1 mic buttons I2C + + VDDA USB Host VBUS VUSB ADC_R ADC_LCODEC *XTAL is a requirement

Figure 1. Typical Application Diagram Note: Please see ES9281A/ES9280A PRO reference Schematic for more complete schematic.

ES9281A/80A PRO Product Brief

0.2.5 April 15, 2021

ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 • WWW.ESSTECH.COM Functional Block Diagram MODULATORS PLL I2C MASTER Low Noise RegCLOCK NETWORK POWER MANAGEMENT & CONTROL HP AMP 100 100 R HP AM P 100 100 R MUXMUX DIGITAL CORE XI XO SDAM SCLM RESETB DCLK (BCK) DATA1 (WS) DATA2 (SD) GPIO1*-14 DGND DVDD AVDD AVCC_DAC VREF VCCA AGND PNEG PNEG_VC OUT_L INB_L GSN_L IN_L INB_R OUT_R IN_R ADC_R GSN_R AVCC_33 AVCC_18 HyperStream ® II QUAD DAC HyperStream ® II QUAD DAC CHARGE PUMP CLASS G 1.8/3.3V C1 C1_VC C2_VC Jack/Button Detection

  • Plug In & Out
  • Impedance Detection
  • Buttons
  • Moisture protection ADC_L JDET1 JDET2MIC LDO S/E ADC (LEFT) DIFF. MIC AD C AMIC_P AMIC_N PRE-AM PDifferential BANDGAP CLK DETECT / POR DIGITAL AUDIO PORT (I2S, DSD, DoP, SPDIF, MQA) DIGITAL FILTERS, VOLUME CONTROL RT1 INT SMART CONTROLLER Bootload Interface/SPI 0dB-30dB, 6 dB Steps 0dB-30dB, 6dB Steps 1Vrms InputASP PB ZREF AGND AGNDMBIAS I2C SLAVESDAS SCLS ACLK2 ACLK1 ADDR R R PRE-AMP PRE-AMP S/E ADC (RIGHT) DVDD LDO VDDA VUSB USB PHY VBUS Figure 2 – ES9281A/80A PRO Block Diagram *Note: SCLK/GPIO1 is usable as a GPIO when USB port is not used.

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 4

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

ES9280AQ PRO All ES9281AQ Pro functionality except MQA support. 90-ball CSP

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