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Maxim's New Headphone Amp
New Headphone Amp offers excellent Signal to Noise ratio
Maxim Integrated
Products introduces the MAX4298 audio speaker/headphone
driver amplifiers specifically designed for use in a harsh
environment where board space is at a premium and the digital supply
is noisy. This stereo speaker driver uses patented design techniques
to achieve ultra-high power-supply rejection ratio (PSRR) across the
audio signal band, while delivering high-current rail-to-rail output
drive. This audio driver is designed to drive highly capacitive
loads that may be encountered when driving long cables to a remote
load such as desktop speakers or notebook headphones. The MAX4298 is
fully compliant to PC’99 standards.
The MAX4298 is capable of achieving greater than 90dB PSRR at
22kHz and driving a 1.5VRMS signal into a 10-kilohm load
with 0.0008% distortion (THD+N) or 1.2VRMS into 32-ohm
headphones with only 0.02% distortion. The MAX4298 operates from a
single +4.5V to +5.5V supply and is available in the tiny 10-pin
µMAX (MSOP) package. In addition, this audio driver features the
industry’s best clickless/popless power-up, power-down, mute, and
unmute functionality.
The company's Web site address is http://www.maxim-ic.com/.
[Reprinted with kind permission from Maxim]
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