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Silicon Labs Launches Most Integrated Multiband Receiver Solution for Wheel-Tuned Radio Designs

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By Business Wirevia The Motley Fool

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Silicon Labs Launches Most Integrated Multiband Receiver Solution for Wheel-Tuned Radio Designs

New Si48xx AM/FM/SW Radio ICs Ease Design and Manufacturing for China’s 115 Million-Unit-Per-Year Analog-Tuned Radio Market

AUSTIN, Texas–(BUSINESS WIRE)– Silicon Labs (NAS: SLAB) , a leader in high-performance, analog-intensive, mixed-signal ICs, today introduced the latest generation of the company’s widely used analog-tuned, analog/digital-display (ATxD) multiband radio IC family. The new Si4825/27/36 AM/FM/SW receivers provide superior radio band coverage and a 16-pin SOIC package option that eases the design and manufacturing of ATxD radio products. The new Si48xx radio ICs provide an “all-in-one” single-chip receiver solution for tabletop and portable radios, stereos, mini/micro systems, boomboxes, clock radios, iPod docking stations, toy radios and many other consumer products containing wheel-tuned radios.

The wheel-tuned or “analog-tuned” multiband radio product market exceeds 115 million units per year, according to Silicon Labs estimates. More than 90 percent of all ATxD radios including products for the global export market are manufactured in China. A pioneer in RF-in-CMOS multiband receivers for the wheel-tuned radio market, Silicon Labs has now delivered three generations of single-chip receiver solutions that reduce the cost and complexity and simplify the manufacturing of radio products used by many millions of consumers worldwide.

Silicon Labs‘ new Si4825/27/36 receivers offer the same exceptional RF performance, unmatched integration in CMOS, bill of materials (BOM) and labor cost reduction, and ease of design and manufacturing as previous generations of Si48xx radio ICs. In addition, the new receivers use a single band to cover a wider frequency range for FM and SW bands, and they also support TV audio carrier reception in the China market. Additionally, the devices provide advanced audio conditioning for all signal environments, removing pops, clicks and loud static in challenging signal conditions.

The Si4825 mono-output, consumer-grade product and the Si4836 stereo-output, commercial-grade product are designed for the ATAD radio market. The Si4827 mono-output, consumer-grade product targets the ATDD radio market. Each receiver supports worldwide broadcast frequencies from 64-109 MHz in FM, 504-1750 kHz in AM and 2.3-28.5 MHz in shortwave (SW), enabling a single radio design based on the receivers to support all worldwide markets.

“Silicon Labs‘ Si48xx multiband receiver family provides an innovative ‘radio-on-a-chip’ architecture that enables wheel-tuned radio manufacturers to simplify and shrink their board designs, eliminate costly manual labor in manufacturing and reduce component count by more than 80 percent,” said James Stansberry, vice president and general manager of …read more
Source: FULL ARTICLE at DailyFinance

Business, Finance, Occupation & Industry

ON Semiconductor Addresses Modern Power Design Challenges at Applied Power Electronics Conference 20

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By Business Wirevia The Motley Fool

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ON Semiconductor Addresses Modern Power Design Challenges at Applied Power Electronics Conference 2013

Cutting-edge digital AC-DC PWM controllers, motor drivers and IGBTs to be demonstrated by the company at industry’s premier power electronics show

LONG BEACH, Calif.–(BUSINESS WIRE)– ON Semiconductor (Nasdaq: ONNN), driving innovation in energy efficiency, will showcase its latest power efficient product advances at APEC 2013, March 17-21, 2013, in Long Beach, California. The new devices are designed for boosting performance and simplifying the design of offline power supplies, AC lighting infrastructure and motor control systems.

Targeted for high efficiency, compact, switch-mode power supplies for power adaptors, the NCP1937is a quasi-resonant (QR) flyback controller device with power factor correction (PFC). This is the first AC-DC device utilizing a hybrid digital core architecture enabling higher efficiency, increased flexibility and easier system design implementation. The device incorporates all the features necessary for building a robust and compact PFC stage in combination with a QR flyback stage, while minimizing the number of external components. The quasi-resonant current-mode flyback stage features a proprietary valley-lockout circuitry, ensuring stable valley switching. It has wide voltage range spanning 9 volts (V) to 30 V, plus built-in over-voltage protection, and a skip mode operation which enables higher efficiency in light load conditions. The NCP1937 will be demonstrated in an 85 watt (W) Notebook Adapter showcasing the industry’s leading <10 milliWatt (mW) no load standby power.

The NCP1255/NCP1254 is a fixed frequencyPWM controller designed for applications requiring peak power capability. Offered in SOIC-8 and TSOP-6 packages, it operates with a fixed 65 kilohertz (kHz) switching frequency with the ability to scale the frequency up to 130 kHz based on output load requirements. In light load conditions with the power on the secondary side decreasing, the IC automatically folds back its switching frequency to a minimum level (26 kHz). The inclusion of adjustable over-power protection and adjustable brown-out protection functions make this device ideal for products requiring peak-power capabilities such as printers and ultrabooks. The NCP1255 will be demonstrated in a 15 W nominal 55 W peak power printer adapter.

For LED power supply applications, the high functional integration of theNCL30081 PWM controller IC minimizes the number of external components required for AC powered LED lighting designs. It operates in a quasi-resonant mode to enhance overall efficiency and provides precision regulation of the LED current from the primary side. Dispensing with the need for secondary side feedback control, as well as the associated optocoupler and …read more
Source: FULL ARTICLE at DailyFinance