Class AB/D Speaker Driver offers user-selectable features.
February 15, 2008 -
Offered in 3 x 3 mm QFN-16 and 1.64 x 1.64 mm CSP package options for space-constrained mobile applications, WM9001 offers user-selectable features such as class D or AB output modes, single-ended or differential-input modes, device clocking, and speaker boost gain. This mono 1 W switchable Class AB/D speaker driver offers RF noise suppression as well as pop and click suppression circuitry. Due to its design, product can be placed close to speaker housing and connected directly.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
|Original Press release |
Wolfson Microelectronics plc
Edinburgh, , EH11 2QB
Wolfson Delivers Leading Class AB/D Speaker Driver
Flexibility and small footprint make it well suited for mobile applications
MWC, Barcelona, Spain, February 12th, 2008 - Wolfson Microelectronics plc (LSE: WFL.L) today announced the WM9001 mono 1 W switchable Class AB/D speaker driver. The WM9001 is designed to deliver exceptional audio performance and enhanced flexibility to portable applications system designers.
User selectable features including, class D or AB output modes, single-ended or differential-input modes, device clocking and speaker boost gain can all be configured by the system designer for application optimization.
Moreover, the small device footprint allows for placement close to the speaker housing, simplifying PCB layout and maintaining signal integrity by minimizing high frequency signal track lengths. Audio performance is enhanced through differential input and output modes to remove undesired noise. Additionally, RF noise suppression is improved and external component count reduced by an integrated oscillator for clocking the class D outputs. Low leakage, high PSRR and pop and click suppression enable the speaker supply to be connected directly to the battery without compromising battery life or audio quality.
"The WM9001 is a flexible class AB/D speaker driver with integrated pop and click suppression circuitry. This provides portable media device designers with maximum flexibility while enhancing the multimedia experience with high performance audio and voice quality at the same time reducing system cost and PCB area," commented Richard Potter, Product Line Manager for Mobile Handset products.
The WM9001 also connects easily with both the WM8990 audio hub codec and the new WM8400 audio and power management IC, enabling a full stereo 1 W class AB/D speaker drive solution for multimedia rich mobile handsets. The WM9001 can easily connect to Wolfson's portfolio of high-performance, low-power audio CODECs and DACs, bringing quality speaker drive performance to portable applications.
The WM9001 comes in small, low-profile 3x3 mm QFN-16 and 1.64x1.64 mm CSP package options, making it ideal for space-constrained applications such as mobile phones, navigation devices, media players, laptops and electronic dictionaries.
Availability and pricing:
The WM9001 is sampling now and is priced at $0.45 in quantities of 10,000.
About Wolfson Microelectronics
Wolfson Microelectronics plc is a leading global provider of high performance, mixed-signal semiconductors to the consumer electronics market.
Wolfson is known for its high performance audio and ultra low power consumption, its devices are at the heart of many high profile consumer electronics products, including mobile phones, MP3 players, flat panel TVs and in-car infotainment systems. Wolfson technology enables exciting new end-user experiences by connecting the digital world to the human senses.
Headquartered in Edinburgh, UK, Wolfson has sales and engineering offices in the USA, Japan, China, Taiwan, Korea, Singapore and India.
Wolfson Microelectronics plc is listed on the London stock exchange (LSE: WLF.L).
For more information about Wolfson Microelectronics, please visit:
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Wolfson Microelectronics plc
Tel: +44 (0) 131 272 7000