Analog Reinvented

ES9270

High performance USB DAC with Headphone Amplifier

ADC, PLL, Jack Detect, Mic, and A/D Mixing

s

ESS TECHNOLOGY, INC. 237 South Hillview Drive, Milpitas, CA 95035, USA Tel (408) 643-

8800 • Fax (408) 643-8801

Patented 32-bit HyperStream® II QUAD DAC™

Architecture

32-bit mobile audio DAC/HPA with high dynamic range & ultra-low distortion

+130dB SNR, +117dBA DNR, 2.0Vrms into 100k



-112dB THD+N, 2.0Vrms into 100k



-108dB THD+N, 1.0Vrms into 32



Supports synchronous and asynchronous sampling modes

Experience Sabre HiFi® all the way to headphones

Analog PLL

Simplifies clocking requirements and reduces PCB size and BOM cost

Versatile digital audio input port

Supports master/slave PCM (I2S, LJ 16-32-bit), DSD and DoP formats.

Customizable filter characteristics

3 preset filters, programmable filter coefficients for custom sound signature

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 ES9270 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

Patented Time Domain Jitter Eliminator

Unmatched audio clarity free from input clock jitter

USB 2.0 Audio Support

Supporting PCM 384kHz Audio rates over USB

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

FEATURE

DESCRIPTION

s

The ES9270 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 mics, 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, the

ES9270 delivers a performance level that will satisfy the most demanding audio enthusiast.

The versatile audio input port accepts PCM, DSD and DoP. The integrated SABRE DAC supports up to 32-bit 384kHz PCM, and DSD audio data

via master/slave interface in synchronous and asynchronous sampling modes. Audio rates of 384kHz and DoP are supported over USB.

The integrated class-G SABRE Headphone Amp supports up to 2Vrms output. 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 wakes 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 playback.

ES9270 may be customized for any application with firmware-controlled behavior and both volatile and non-volatile memory options.