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Silicon Laboratories Inc. is a leading global manufacturer of integrated-circuit (IC) products that combine world-class analog with high-speed digital and FLASH memory in a single, powerful chip. The combination of mixed-signal integration and in-system programmability offers tangible user benefits through higher component integration, greater design flexibility, faster time-to-market, superior system performance, and improved end-product differentiation.

Silicon Labs Featured Product
Silicon Labs QuickSense Infrared Sensing
Silicon Labs Quicksense™ Human Interface Solutions

The Silicon Labs QuickSense™ family of products offers a unique grouping of the industry's fastest capacitive and optical sensing solutions to enable sophisticated user interfaces in electronics products, all supported with the innovative and easy to use QuickSense Studio development platform.


User Interface Solutions

The QuickSense portfolio features touch and touchless user interface solutions, including the innovative touchless slider which can detect complex gestures. Developers will find reliable and responsive UI products including:

  • Capacitive buttons
  • Capacitive sliders and wheels
  • Capacitive proximity sensing
  • Infrared proximity sensing
  • Ambient light sensing



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Silicon Labs Product Line




New Silicon Labs Products
Added 02/2012 Silicon Labs Si5xx-PROG-EVB Evaluation Board Learn More
Added 09/2011 Silicon Labs Si4840 / Si4844 Radio Receiver ICs Learn More
Added 08/2011 Silicon Labs Si86xx Six-Channel Digital Isolators Learn More
Added 06/2011 Silicon Labs Energy Harvesting Reference Design Learn More
Added 05/2011 Silicon Labs Si537x 4-PLL Jitter Attenuating Clock ICs Learn More
Added 04/2011 Silicon Labs HID USB to IR Reference Design Learn More
Added 04/2011 Silicon Labs C8051F38x / C8051T62x Mixed-Signal USB MCUs Learn More
Added 01/2011 Silicon Labs Si114x QuickSense™ Infrared Proximity Sensors Learn More
Added 12/2010 Silicon Labs Si85XX20AQFN-EVB Evaluation Board Learn More
Added 12/2010 Silicon Labs CP21xx Smart Interface Connectivity Bridges Learn More
Added 11/2010 Silicon Labs Si5351 CMOS Clock Generator Learn More
Added 11/2010 Silicon Labs Si824x Class D Audio Drivers Learn More
Added 10/2010 Silicon Labs EZLink Development Kits for Si4431 / Si4432 EZRadioPRO® Learn More
Added 09/2010 Silicon Labs CP2501 Programmable Touchscreen USB Bridge IC Learn More
Added 07/2010 Silicon Labs Si401x / Si431x EZRadio® Wireless Solutions - Expansion Learn More
Added 07/2010 Silicon Labs C8051F98x / C8051F99x Microcontrollers Learn More
Added 06/2010 Silicon Labs Si841x / Si842x 5kV Digital Isolators Learn More
Added 06/2010 Silicon Labs Si5317 Jitter Cleaning Clock Learn More
Added 04/2010 Silicon Labs Si822x / Si823x ISOdrivers Learn More
Added 03/2010 Silicon Labs Si100x / Si101x Single Chip MCU w/ xcvr Learn More
Added 02/2010 Silicon Labs Si3452 / Si3453 Quad Port Controller Learn More
Added 02/2010 Silicon Labs CP240x LCD Controllers Learn More




Featured New Silicon Labs Products

Silicon Labs Si5xx-PROG-EVB Programmable XO/VCXO Evaluation Board

The Silicon Labs Si5xx-PROG-EVB Evaluation Board contains the hardware and software needed for evaluation of the Si514 / 570 / 571 / 598 / 599 Any-Frequency I²C Programmable Crystal Oscillators / Voltage-Controlled Crystal Oscillators (XOs / VCXOs) and can be run on a USB-equipped PC. The Silicon Labs Si5xx-PROG-EVB kit features Windows-compatible software control and device programming. A voltage regulator supports device operation of the Si5xx at +1.8, +2.5, or +3.3V. Si51xx XOs / VCXOs feature Silicon Labs' patented DSPLL® technology to generate any frequency from 100 kHz to 250 MHz with 26 parts per trillion frequency programming resolution.

Silicon Labs Si4840 / Si4844 Radio Receiver ICs

The Silicon Labs Si4840 and Si4844 are the first analog-tuned digital-display CMOS AM/FM/SW radio receiver ICs that integrate the complete receiver function from antenna input to audio output. Si4840 and Si4844 radio receiver ICs implement Silicon Labs' proven low-IF digital architecture, providing an easy and reliable control interface while eliminating all the manual tuned external components used in traditional solutions. The architecture also provides the industry's leading receiver performance, with excellent sensitivity and selectivity in all supported bands. Silicon Labs Si4840 and Si4844 radio receiver ICs support industry-leading features for band selection, Bass/Treble boost, European EN 55020/22, and U.S. FCC compliance as well as advanced audio conditioning for all signal environments to remove pops, clicks, and abrasive static. These radio receiver ICs also support interrupts for valid tuned frequencies and stereo/mono signal quality. Si484x devices are designed for use in a variety of applications, including table and portable radios, stereos, mini/micro systems, boom boxes, clock radios, and more.

Silicon Labs Si537x 4-PLL Jitter Attenuating Clock ICs

Silicon Labs Si5374 and Si5375 4-PLL Jitter Attenuating Clocks are the first single-chip timing ICs to integrate four independent, high-performance phase locked loops (PLLs), providing twice the PLL integration and 40 percent lower jitter than competing solutions. Silicon Labs Si5374 and Si5375 clock ICs with DSPLL® technology address the complex timing requirements of high-speed optical transport network (OTN) applications. The Si5374 has eight input clocks and eight output clocks while the Si5375 offers four input clocks and four output clocks for applications requiring fewer clocks. With its quad-DSPLL configuration, a single Si5374 clock can generate different frequencies simultaneously, enabling the design to support SONET/SDH, 1/10/100G Ethernet, 1/2/4/8/10G Fibre Channel, 3G/HD SDI video and other protocols simultaneously in the same device. Silicon Labs Si5374 and Si5375 clock ICs provide a smooth upgrade path for existing customers migrating from Silicon Labs Si5319 / Si5326 clocks to a more integrated jitter-cleaning clock solution designed to minimize BOM cost and complexity. The Si537x clocks effectively replace four timing devices with a single IC in high-port-count 10G/40G/100G OTN line cards.

Silicon Labs Si86xx Six-Channel Digital Isolators

Silicon Labs Si86xx digital isolators are the industry's first six-channel 5kV digital isolators. These Silicon Labs six-channel digital isolators offer the highest channel count, performance, and data rate for demanding applications with isolation ratings up to 5kV. Si86xx 3.5kV and 5kV digital isolators replace optocouplers in target applications requiring robust operation and high levels of insulation protection, such as industrial automation and drives, motor control, and medical systems. With its 5kV rating, the Si86xx family offers an ideal isolation solution for isolated ac-dc and dc-dc power supplies, as well as solar panel microinverters, data communications systems, and hybrid electric vehicles (HEVs). Silicon Labs Si86xx isolators deliver the industry's fastest data rate (150 Mbps) across the widest temperature range (-40 to 125ºC), as well as ultra-low power operation of less than 1.6 mA per channel at 1 Mbps for energy-efficient system design. The robust architecture of the Si86xx family ensures that signal integrity is maintained even while operating at high data rates and at high temperatures in harsh environments.

Silicon Labs Energy Harvesting Reference Design

The Silicon Labs Energy Harvesting Reference Design demonstrates an extremely low power wireless sensor node operating from a solar energy harvesting source. This turn-key wireless sensor node solution is powered by an energy harvesting source. Developers can reuse this energy harvesting design extensively to implement any wireless sensor system. The Silicon Labs Energy Harvesting Reference Design is optimized for minimum power consumption. The design uses the power-efficient Si10xx wireless microcontroller. Ultra-low power modes and fast-wake-up capability of the MCU minimize power consumption. The flexible system design will accommodate other harvested energy sources in addition to solar. This Silicon Labs reference design makes it easy to bypass the solar source and connect other energy sources such as vibration (piezoelectric), thermal, and RF.

Silicon Labs HID USB to IR Reference Design

The Silicon Labs plug-and-play HID USB to IR Reference Design demonstrates the ease of use and versatility of the CP2112 USB bridge and Si1143 proximity sensor devices. The Silicon Labs HID USB to IR Reference Design responds to pre-defined touchless swipe gestures (left, right, up, and down) using the Si1143 QuickSense™ proximity and ambient light sensor. The CP2112 HID USB to SMBus/I²C bridge handles the USB communication required for configuring the sensor and transferring the measured data for gesture recognition. Only minimal components are needed. The user interaction with the board is displayed using an application on your PC. This Silicon Labs reference design includes an HID USB to IR Reference Design Bridge Board and a retractable USB cable. The reference design uses the downloadable PuzzleSwipe application that demonstrates an infrared gesture control system based on the QuickSense Si1143 proximity sensor and the CP2112 USB to SMBus/I²C connectivity bridge. The Windows PC application enables the user to assemble a puzzle by controlling a "puzzle block" using the IR gesture USB board and touchless gestures.

Silicon Labs C8051F38x / C8051T62x Mixed-Signal USB MCUs

The Silicon Labs C8051F38x and C8051T62x family of mixed-signal USB microcontrollers (MCUs) includes flash-based and one-time programmable devices designed to provide cost-effective USB connectivity for a wide range of consumer, industrial, and medical applications. Target applications include glucose meters, home automation systems, touchscreen displays, smart card readers, USB dongles, USB communication interfaces, and I/O controllers. These Silicon Labs USB MCUs feature a high-performance processing core (operating at 48 MHz) that enables maximum USB throughput without compromising application performance and eliminates the need for costly high-end microcontrollers. The C8051F38x and C8051T62x feature clock-less operation and in-system programming memory for reduced system cost and design complexity. Silicon Labs C8051F38x and C8051T62x MCUs also deliver best-in-class mixed-signal integration in small-footprint package.

Silicon Labs Si114x QuickSense™ Infrared Proximity Sensors

Silicon Labs Si114x QuickSenseinfrared proximity sensors are the industry's most sensitive and lowest power active infrared proximity sensors. Silicon Labs Si114x infrared proximity sensors feature an all-digital I²C control interface and up to three infrared LED drivers in an impressively small 2mm x 2mm clear QFN package. These Silicon Labs sensors are capable of controlling 1-, 2-, and 3-infrared LED systems, giving developers the freedom to implement one-dimensional systems with a range of up to 50cm or multi-dimensional systems capable of advanced motion sensing with a range of up to 15cm. Silicon Labs Si114x infrared proximity sensors extend battery life by reducing the Ir-LED on-time to only 25.6 µs. These QuickSense devices also feature an integrated ambient light photodiode that enables accurate light level monitoring in mixed-light source settings.

Silicon Labs CP21xx Smart Interface Connectivity Bridges

The Silicon Labs CP2104, CP2105, CP2110, and CP2112 connectivity bridges are the latest additions to Silicon Labs' industry-leading Smart Interface family. The Silicon Labs CP21xx family of devices extends the Smart Interface portfolio to include cost-sensitive USB to UART (CP2104), USB to Dual UART (CP2105), HID-USB to UART (CP2110), and HID-USB to SMBUS / I²C bridge (CP2112) solutions. Common to the CP2104, CP2105, CP2110, and CP2112 connectivity bridges are royalty-free software driver suites, crystal-less operation, in-system programming memory, and small 4 mm x 4 mm packages that in combination reduce cost, simplify design, and shorten development time. CP21xxEK evaluation kits allow for complete evaluation and customization of these devices.

Silicon Labs Si85XX20AQFN-EVB Evaluation Board

The Silicon Labs Si85XX20AQFN-EVB contains a 20 Amp Si8513 unidirectional AC current sensor. The Silicon Labs Si85XX20AQFNEVB evaluation board provides a means to evaluate the AC current sensor in an existing application. It is meant to be soldered directly into the user's existing power supply. The Si8513 features a 20 Amp full-scale input range.Silicon Labs Si85xx AC current sensors offer size, performance, and cost advantages over current transformers, Hall Effect devices, DCR circuits, and other approaches.

Silicon Labs MCUniversity Kit

The Silicon Labs MCUniversity Kit contains all the materials needed by students, including a ToolStick University Starter Kit, Embedded Programming Textbook, Silicon Labs MCU Selector Guide, engineer pad, and pen. The Toolstick University Starter Kit included in the Silicon Labs MCUniversity Kit is a complete development platform for MCUniversity course lab exercises. The ToolStick base adapter provides a USB debug interface and data communications path between a Windows PC and the C8051F020 microcontroller. The base adapter is powered from the USB port and also provides power to the University Daughter Card. The C8051F020 microcontroller and application circuitry are located on the daughter card.





Silicon Labs Training Videos
Wireless Development Suite — Radio Control Panel

Tutorial on how to get from quick configuration of the radios to generating basic link code in Wireless Development Suite (WDS). Focuses on the radio control panel.


QuickSense™ Touchless Slider Evaluation Kit Demonstration

This step by step video highlights the new QuickSense Studio using the Touchless Slider EK. See how quickly and easily you can implement complex gesture recognition using intuitive software development tools for configuring, building and calibrating active infrared sensing systems.


QuickSense™ API Demonstration

See a demonstration of the QuickSense API and learn about the structure of the projects created by the QuickSense Configuration Wizard. The demo starts with an overview of the API and makes its way through the files that make up the QuickSense API project for capacitive sensing.


Music Keyboard Demonstration

Follow along with this demonstration of the Keyboard Evaluation Kit. This application example uses the KEYBOARD-EK to illustrate the use of capacitive sensing switches using the C8051F700 family of MCUs with Silicon Labs Capacitance to Digital Converter (CDC) technology.


QuickSense™ Studio Demo

See how you can implement capacitive and IR sensors in minutes! This video takes you step by step through the features and operation of the QuickSense™ Studio application, a common development environment that simplifies characterization of capacitive and IR sensing systems using Silicon Labs human interface products.


More Silicon Labs Videos



Silicon Labs Technology Tutorials
Lower Your Power Consumption

Lower the power consumption in your design! The C8051F9xx is the industry's lowest-power MCU and the first MCU able to operate down to 0.9 V with support for single and dual battery operation. The part provides all key attributes for low-power applications.


Replace Your Crystal XO

Replace your crystal XO with a drop-in compatible all-silicon XO. Short lead times, highest reliability and unmatched performance make this an ideal part for high volume applications. Discover how to generate your own part number!


Minimize Your Radio BOM Cost

The easy-to-use Si47xx family requires only two external components and offers many footprint compatible multi-band receivers. This family has the highest level of integration and best-in-class performance and requires no factory hand-tuning.


Integrated CAN to LIN MCUs

Reduce system cost with a highly-integrated 8-bit MCU architecture. The C8051F50x offers an integrated CAN to LIN gateway with no external timing components in a 5x5 mm package. Silicon Labs is an ISO/TS16949 registered company.


Silicon Labs Product-Specific Training Courses


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