Product category:
Analogue and Mixed Signal ICs
News Release from: Wolfson Microelectronics | Subject: WM9001
Edited by the Electronicstalk Editorial
Team on 13 February 2008
Speaker driver boosts audio performance
Small device footprint allows placement close to the speaker housing, enabling simplified PCB layout and maintaining signal integrity.
New from Wolfson Microelectronics, the WM9001 mono 1W switchable Class AB/D speaker driver is designed to deliver top audio performance and enhanced flexibility to portable applications system designers User selectable features such as 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 optimisation
This article was originally published on Electronicstalk on 13 Apr 2001 at 8.00am (UK)
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Moreover, small device footprint allows placement close to the speaker housing, enabling simplified PCB layout and maintaining signal integrity by minimising 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/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 solution with integrated pop and click suppression circuitry", says Richard Potter, Product Line Manager for Mobile Handset Products.
"This provides system designers with maximum flexibility in diverse portable media devices to enhance the multimedia experience with high performance audio and voice quality while reducing system cost and PCB area".
WM9001 also connects seamlessly with both the WM8990 audio hub codec and the new WM8400 audio and power management IC, enabling a full stereo 1W 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.
WM9001 comes in small low-profile 3 x 3mm QFN-16 and 1.64 x 1.64mm CSP package options, making it ideal for space constrained applications such as mobile phones, navigation devices, media players, laptops and electronic dictionaries.
Samples of the WM9001 are available to now.
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