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

LAS VEGAS--(BUSINESS WIRE)--Conexant 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.

“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.”

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 www.conexant.com.