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As the first choice for signal processing components, Cirrus Logic ICs span the audio market with ICs for consumer home audio, professional audio, automotive audio and portable audio. Products such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), codecs, interface products, volume control ICs and digital amplifiers provide innovative solutions for a variety of applications including audio/video receivers, soundbars, DTVs, portable media players, smartphones, amplifiers, head units, satellite radios, music instruments and mixing consoles.

Building upon its foundation in mixed-signal design expertise, Cirrus Logic also develops ICs for energy and industrial applications, including AFEs, ADCs, DACs, linear amplifiers and PWM amplifiers ICs targeting applications such as digital utility meters, home energy monitors and motor control. Cirrus Logic recently expanded its portfolio of products to include digital power factor correction ICs that enable smaller, more efficient power supplies for consumer products. Through the company's Apex Precision Power™ line of products, Cirrus Logic excels at developing specialized components for motor control and other high-power applications.

Cirrus Logic Smartphone Solutions

Cirrus Logic CS42L73 smart audio CODECWith a focus on lowering system power, improving battery life and reducing board space, Cirrus Logic has introduced two new ICs for smartphones and mobile applications: the CS42L73 smart audio CODEC and the CS35L0X family of hybrid Class D amplifiers.

The CS42L73 gives smartphone designers a better option for handing all audio-related tasks — reducing the burden of the system's applications processor, lowering power consumption and subsequently improving battery life.

Cirrus Logic CS35L0x Class-D Audio Amplifiers To meet the multiple challenges of delivering high-quality audio in a mobile handset application while keeping noise and power consumption low, the CS35L0X family of hybrid Class D audio amplifiers consume only 0.9mA of quiescent current, which is 40 percent less than the nearest competitor delivers, in an amazingly small 1.2 mm space. The amplifier family combines Class D efficiency and output power with low idle current consumption and minimal EMI found typically only in class AB amplifiers.


Smartphone Block Diagram
Features
  • Three independent serial ports with integrated asynch SRCs
  • Native (no PLL required) support for 6/12/24 MHz, 13/26 MHz, and 19.2/38l4 MHz master
  • High-speed I²C control port (400 kHz)






Cirrus Logic Product Line




New Cirrus Logic Products
Added 01/2012 Cirrus Logic Energy Measurement ICs Learn More
Added 06/2011 Cirrus Logic CS1501 / CS1601 Digital PFC Controllers Learn More
Added 07/2010 Cirrus Logic CS4354 24-bit Digital to Analog Converter Learn More
Added 06/2010 Cirrus Logic CS42L73 Smart Audio CODEC Learn More
Added 06/2010 Cirrus Logic CS1500 / CS1600 Digital PFC Controller ICs Learn More
Added 06/2010 Cirrus Logic CS35L0x Class-D Audio Amplifiers Learn More
Added 04/2010 Cirrus Logic CS89xx Crystal LAN™ Ethernet Controller Learn More
Added 03/2010 Cirrus Logic PA107DP / MP103FC Power Amplifiers Learn More




Featured Cirrus Logic Products

Cirrus Logic Energy Measurement ICs

Cirrus Logic Energy Measurement ICs are a high-accuracy energy measurement analog front end. These Energy Measurement ICs incorporate independent 4th order Delta-Sigma analog-to-digital converters for every channel, reference circuitry, and the proven EXL signal processing core to provide active, reactive and apparent energy measurement. RMS and power factor calculations for these Energy Measurement ICs are available and are output via a configurable energy pulse, or direct SPI/UART serial access to on-chip registers. Cirrus Logic Energy Measurement ICs also provide instantaneous current, voltage and power measurements that are available over the serial port.

Cirrus Logic CS1501 / CS1601 Digital PFC Controllers

The Cirrus Logic CS1501 / CS1601 family of digital PFC controllers feature superior efficiency and THD (total harmonic distortion) performance across variable load conditions and enable smaller, simpler designs through a reduction in boost inductor size along with fewer required external components. These high-performance, active digital PFC controllers are Variable Frequency Discontinuous Mode (VF-DCM) ICs featuring Cirrus Logic's EXL Core® Technology that enables intelligent and adaptive switching that traditional analog PFC devices lack. The CS1501 / CS1601 operate at switching speeds up to 70kHz and the CS1601H operates up to 100kHz. These next generation controllers feature Current Sense (CS) and Zero Crossing Detect (ZCD) functionality, which enables accurate over-current protection, high overall efficiency, and best-in-class THD. The CS1501 / CS1601 / CS1601H are targeted for use in switch-mode power supplies (SMPS) applications, including LED / Fluorescent Lighting, DTVs, Servers / Telecom, Notebooks, and Desktops under 300W.

Cirrus Logic CS8427 Digital Audio Transceiver

The Cirrus Logic CS8427 stereo digital audio transceiver features AES3 and serial digital audio inputs and AES3 and serial digital audio outputs and includes comprehensive control ability through a 4-wire microcontroller port. Channel status and user data are assembled in block-sized buffers, making read / modify / write cycles easy. A low-jitter clock recovery mechanism included on the Cirrus Logic CS8427 audio transceiver yields a very clean recovered clock from the incoming AES3 stream. Target applications for the Cirrus Logic CS8427 include A/V receivers, CD-R, DVD receivers, multimedia speakers, digital mixing consoles, effects processors, set-top boxes, and computer and automotive audio systems.

Cirrus Logic CS4335 Stereo Digital-to-Analog Converter

The Cirrus Logic CS4335 24-bit, 96 kHz stereo Digital-to-Analog Converter (DAC) is a complete, stereo DAC output system. The Cirrus Logic CS4335 is based on Delta-Sigma modulation, where the modulator output controls the reference voltage input to an ultra-linear analog low-pass filter. The architecture allows for infinite adjustment of sample rate between 2 kHz and 100 kHz simply by changing the master clock frequency. The CS4335 DAC contains on-chip digital de-emphasis, operates from a single +5V power supply, and requires minimal support circuitry.

Cirrus Logic CS4202 Audio CODEC '97 with Headphone Amplifier

The Cirrus Logic CS4202 stereo audio CODEC '97 with headphone amplifier is an AC '97 2.2 compliant device designed for PC multimedia systems and uses industry-leading delta-sigma and mixed signal technology. The advanced technology in the Cirrus Logic CS4202 is designed to help enable the design of PC 99 and PC 2001 compliant high-quality audio systems for desktop, portable, and entertainment PCs. Coupling the CS4202 CODEC with a PCI audio accelerator or core logic supporting the AC '97 interface implements a cost effective, superior quality audio solution.

Cirrus Logic CS4354 24-bit Digital to Analog Converter

The Cirrus Logic CS4354 is a 24-bit stereo audio digital to analog converter (DAC) with an on-chip 2Vrms line driver working from a single 5V power supply. The CS4354 24-bit stereo audio DAC features an efficient design, low out of band noise, and low pop noise levels. This Cirrus Logic device is based on a charge pump architecture and outputs a 2Vrms voltage without the need for high voltage regulator. The CS4354 also features a ground-centered output architecture, removing the need for external DC blocking capacitors and any pop prevention circuit. This Cirrus Logic data converter is ideal for any application that requires a line-level output, including DTV, Blu-ray players, set-top boxes, video game consoles, DVD players and recorders, personal video recorders (PVRs), and DVD receivers. The CS4354 DAC achieves 101dB dynamic range and is available in a 14-pin SOIC package in commercial grade only.

Cirrus Logic CS1500 / CS1600 Digital PFC Controller ICs

The Cirrus Logic CS1500 and CS1600 are the first digital power factor correction (PFC) controller ICs that surpass analog PFCs on performance and price. The CS1500 and CS1600 offer power supply and lighting ballast system designers improved performance and simplified designs compared to legacy analog PFC products. These Cirrus Logic digital PFC controller ICs feature the new EXL Core™ architecture, giving the devices the advantage over analog products of being able to intelligently solve increasingly complex power management challenges. The CS1500 and CS1600 have patent-pending digital noise shaping technology that enables reduced-sized EMI filters and cuts the need for additional high-priced components and circuitry. These digital PFC controller ICs improve energy efficiency across all load conditions with a distinct performance advantage in light load conditions.

Cirrus Logic CS42L73 Smart Audio CODEC

The Cirrus Logic CS42L73 smart audio CODEC is a high-quality, ultra low-power audio CODEC for smart phone applications that allows these power-hungry devices to conserve energy and extend battery life by offloading audio-related tasks typically reserved for the applications processor. The CS42L73 features three serial audio ports and asynchronous sample rate converters, allowing this smart audio CODEC to manage the complex routing, processing, and mixing of a variety of multiformat audio signals while increasing overall system efficiency. This Cirrus Logic device has a rated power consumption as low as 4 mW during a voice call, the lowest power consumption of a product with asynchronous sample-rate converters and a digital mixing engine in the signal path. The CS42L73 audio CODEC features two analog-to-digital converters (ADCs) and four digital-to-analog converters (DACs) based on an advanced multibit Delta Sigma architecture. The DACs can drive five outputs, while the analog front end supports both line and microphone inputs with both programmable gain amplifiers and automatic level control.

Cirrus Logic CS35L0x Class-D Audio Amplifiers

Cirrus Logic CS35L0x low-power, hybrid Class-D audio amplifiers for mobile communications and portable devices help solve multiple system challenges encountered by designers in the areas of extending battery life, improving audio quality, simplifying signal management, and reducing EMI while enabling smaller form factors. CS35L0x audio amplifiers feature an advanced closed-loop architecture and combine Class D efficiency and output power with low idle current consumption and minimal EMI found typically only in Class AB amplifiers. These 3.0W Cirrus Logic devices consume only 0.94mA of quiescent current, 40 percent less than the nearest competitor. The CS35L0x is ideal for use in smart phones, portable gaming, active speakers, and more.

Cirrus Logic CS89xx Crystal LAN™ Ethernet Controller

The Cirrus Logic CS8900A and CS8952 are Crystal LAN™ single-chip IEEE 802.3 Ethernet controllers / transmitters. The Cirrus Logic CS8900A Crystal LAN Ethernet Controller is optimized for the Industry Standard Architecture (ISA) bus and general purpose microcontroller buses. The CS8900A features a highly integrated design that eliminates the need for costly external components required by other Ethernet controllers. The Cirrus Logic CS8952 Crystal LAN 100BASE-X and 10BASE-T Transceiver uses CMOS technology to deliver a high-performance, low-cost 100BASE-X / 10BASE-T Physical Layer (PHY) line interface. The CS8952 makes use of an adaptive equalize optimized for noise and near end crosstalk (NEXT) immunity to extend receiver operation to cable lengths exceeding 160m.

Cirrus Logic CS5463 / CS5464 Power / Energy ICs

Cirrus Logic CS5463 and CS5464 power / energy ICs deliver superior power-measurement performance. The Cirrus Logic CS5463 is an integrated power-measurement IC that combines two Delta-Sigma A/D converters, high-speed power calculation functions, and a serial interface on a single chip. The CS5463 is designed for residential single-phase or industrial three-phase power meter applications. The CS5464 power / energy IC is a watt-hour meter on a chip that measures line voltage and current and calculates active, reactive, apparent power, energy, power factor, and RMS voltage and current. The Cirrus Logic CS5464 utilizes fourth-order Delta Sigma 24-bit A/D converters, offering double the dynamic range of competing ICs. The CS5464 also features advanced programmable fault / tamper detection.

Cirrus Logic CS3511 Class-D PWM Audio Power Amplifier

The Cirrus Logic CS3511 high efficiency Class-D PWM audio power amplifier integrates on-chip over-current, under-voltage, over-temperature protection, and error reporting. The high efficiency Cirrus Logic CS3511 power amplifier contains an onboard regulator that generates a 5 VDC supply used to power the internal low-voltage analog and digital circuitry. The CS3511 also features closed-loop advanced delta-sigma architecture, true spread spectrum modulation, premium quality audio amplification, and three selectable amplifier gain settings. This Cirrus Logic Class-D power amplifier is ideal for active speakers, portable media player docking stations, mini/micro shelf systems, and digital televisions.





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