Product category: Analogue and Mixed Signal ICs
News Release from: National Semiconductor | Subject: LM4916
Edited by the Electronicstalk Editorial Team on 04 August 2003
Headphone amp runs from single-cell
supplies
National Semiconductor has developed a Boomer stereo headphone amplifier designed to operate from a one-cell battery.
National Semiconductor has developed a Boomer stereo headphone amplifier designed to operate from a one-cell battery National's low-profile package allows this amplifier to be used in the tiniest of applications that require only one 1.5V battery
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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The LM4916's small size minimises board space, and the surface mount package maximises output power in the device.
This product is suited for applications in small, portable, one-cell audio applications and consumer devices such as personal CD and mini disc players and electronic toys and games.
"The LM4916 allows National to enter the growing marketplace of portable consumer electronics that are powered by a single-cell battery", said Ken Boyce, Marketing Director for National Semiconductor's Audio Products Group.
"National's LM4916 features high-quality sound that enables consumers to enjoy true audio fidelity from their portable electronic devices".
National's LM4916 is unity gain stable.
It is both a mono differential output (for bridge-tied loads, or BTL) audio power amplifier and a single-ended stereo headphone amplifier.
Operating on a single 1.5V supply, the mono BTL mode delivers 85mW into an 8ohm load at 1% total harmonic distortion plus noise (THD+N).
In single-ended stereo headphone mode, the amplifier delivers 14mW per channel into a 16ohm load at 1% THD+N.
The LM4916 features circuitry that reduces pops and clicks that normally occur during device turn-on and turn-off, an externally controlled low power consumption, active-low shutdown mode and thermal shutdown protection circuitry.
The LM4916 is available now in LLP chip-scale packaging and mini SOIC packaging, and is priced at $0.97 in 1000-unit quantities.
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