Cirrus Logic Stereo 10-Watt Analog Input Class-D Amplifier Delivers Best-in-Class Distortion, EMI Performance
March 04 2009 - 10:00AM
Business Wire
Expanding its portfolio of Class D-based audio amplifier
products, Cirrus Logic Inc. (Nasdaq: CRUS) has introduced the
CS3511, a stereo 10-watt analog-input Class-D audio amplifier IC
ideal for consumer audio applications such as active media
speakers, docking stations, hybrid radios, flat-panel displays and
mini-shelf home stereo systems.
The CS3511 uses an advanced Delta Sigma modulator with a
patented closed-loop architecture and true spread-spectrum
switching controller technology to achieve ultra-low distortion and
significantly reduced electromagnetic interference (EMI) compared
to other stereo 10-watt Class-D amplifier ICs. The spread spectrum
switching controller technology enables adaptation to the audio
input signal and provides finer resolution compared to traditional
pulse-width modulation (PWM) methods. With continuous feedback and
feedforward paths that reduce the inherent non-linearity of
switching power MOSFETs as well as improve stability at high
switching frequencies, the CS3511 is able to achieve best in class
total harmonic distortion plus noise (THD+N) performance of 0.025
percent at five watts and 0.019 percent at one watt.
�The CS3511 was designed to provide our customers with a great
sounding amplifier that provides the efficiency of Class-D
amplification while greatly simplifying the system design
challenges associated with EMI,� said Carl Alberty, director of
Marketing, Cirrus Logic Mixed Signal Audio Products.
The CS3511 supports single-ended inputs or fully-differential
inputs for improved common-mode rejection ratio (CMRR) and operates
from single 9 V or 12 V voltage supplies. It also offers built-in
protection and error reporting with automatic recovery from
over-current, thermal overload and under-voltage conditions.
Pricing and Availability
The CS3511 measures 6 X 6 mm and is available today in a
thermally enhanced 32-pin QFN package. It is priced at $1.39 in
quantities of 10,000.
Cirrus Logic Inc.
Celebrating its 25th year as a leading fabless semiconductor
company in 2009, Cirrus Logic develops high-precision, analog and
mixed-signal integrated circuits for a broad range of innovative
customers. Building on its diverse analog and signal-processing
patent portfolio, Cirrus Logic delivers highly optimized products
for a variety of audio and energy-related applications. The company
operates from headquarters in Austin, Texas, with offices in
Tucson, Ariz., Europe, Japan and Asia. More information about
Cirrus Logic is available at www.cirrus.com.
Cirrus Logic and Cirrus are trademarks of Cirrus Logic Inc. All
other product names noted herein may be trademarks of their
respective holders.
Cirrus Logic (NASDAQ:CRUS)
Historical Stock Chart
From Jun 2024 to Jul 2024
Cirrus Logic (NASDAQ:CRUS)
Historical Stock Chart
From Jul 2023 to Jul 2024