Conexant Launches New Ultra-Lower Power I2S Audio Codec with Integrated DSP Features

Targeted to Tablets, Ultrabooks, Portable Media Players and Smartphones, the High-Performance Codec Maximizes Speaker Loudness While Preserving Battery Life

LAS VEGAS — (BUSINESS WIRE) — January 7, 2013Conexant Systems Inc. today announced the CX20787, an ultra low-power, I2S audio codec with integrated stereo class-D speaker amplifiers and power-efficient class-G headphone amplifiers. When combined with Conexant’s software algorithms and design support, the CX20787 becomes an ideal turnkey solution for applications that require high-quality audio performance such as tablets, ultrabooks, portable media players, and smartphones. The CX20787 satisfies the demand for high-quality audio in these devices while consuming very little power, thus helping to preserve battery life.

Featuring integrated digital signal processing (DSP), fully configurable hardware EQ and dual-knee dynamic range control (DRC) with reconfigurable inputs or outputs, the CX20787 maximizes speaker loudness without distortion, performs loudness compensation, improves frequency response, protects speakers from over-driving, and extends the microphone pick-up range for Far-Field speakerphone applications. The CX20787 has a pair of ProCoustic™ capless headphone drivers, which eliminate the need for external DC blocking capacitors, and its detect and switch support capabilities support a variety of global headsets. The CX20787 also supports DSP side-port to Conexant’s Digital Audio processor, which adds advanced voice preprocessing and low power Wake-on-Voice function in the portable device.

“Long battery life, small footprint and low cost, along with superior audio fidelity, are absolute must-haves to win in the portable market,” said Jonathan Chien, executive director of marketing for Conexant. “With the introduction of the CX20787, we are providing an optimum solution with ultra low-power and a superior audio experience, paired with our renowned voice processing algorithms, while enabling our customers to save on bill of materials costs.”

Key features of the CX20787 include:

  • Capless stereo class-G headphone driver with single-ended external mono mic
  • Stereo differential speaker with class-D amplifier
  • HW audio signal processing including a fully configurable 5-band bi-quad EQ on stereo output and dual-knee stereo DRC with reconfigurable inputs
  • Multiple independent asynchronous sample rate converters (ASRC)
  • Write sequencer to minimize setup and simplify programming
  • Load based speaker protection including power averaging, short circuit, DC protection, over temperature and high pass filtering
  • PopShield circuitry to eliminate pops and clicks
  • Three differential mic/line shared with digital mic ports
  • Two mic bias with programmable microphone boost
  • Stereo digital microphone with programmable clock source
  • Three I2S ports with integrated PLLs
  • Multiple GPIO’s with hardware volume control
  • Jack sense with debounce
  • <70uW standby power
  • 4mm x 3.9mm, 72 WLCSP package, -40C to +85C
  • Wind noise filter
  • Sidetone with selectable gain
  • Stereo differential or SE line-outs.

The CX20787 is currently sampling, and EVKs are available to qualified customers and partners.

About Conexant

Conexant’s comprehensive portfolio of innovative semiconductor solutions includes products for imaging, audio, embedded modem, and video surveillance applications. Conexant is a fabless semiconductor company headquartered in Newport Beach, Calif. To learn more, please visit


Lages & Associates
Stephanie Olsen
(949) 453-8080
Email Contact

Review Article Be the first to review this article

Senior Software Engineer for EDA Careers at San Jose, California
Hardware Engineer, Board Design for Arista Networks at Santa Clara, California
Senior Account Managers… FORMAL VERIFICATION...VALLEY for EDA Careers at San Jose, California
Sr. Application Engineer for Mentor Graphics at Fremont, California
Salesforce Technical Lead   East Coast  for EDA Careers at Cherry Hill, New Jersey
Upcoming Events
DVCon U.S. 2020 at DoubleTree Hotel San Jose CA - Mar 2 - 5, 2020
OFC 2020 - The Optical Networking and Communication Conference & Exhibition at San Diego Convention Center San Diego CA - Mar 8 - 12, 2020
DATE '2020 at ALPEXPO Grenoble France - Mar 9 - 13, 2020
NVIDIA’s GPU Technology Conference (GTC) at San Jose McEnery Convention Center 150 West San Carlos Street San Jose CA - Mar 22 - 26, 2020

© 2020 Internet Business Systems, Inc.
25 North 14th Steet, Suite 710, San Jose, CA 95112
+1 (408) 882-6554 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering TechJobsCafe - Technical Jobs and Resumes GISCafe - Geographical Information Services  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy PolicyAdvertise