Audio Chip Amplifies Portable Products

Aug. 1, 2002

Aimed at portable electronics such as cellular phones, PDAs, and notebook computers, the LM4854 audio device integrates a 1.9W mono speaker amplifier and an 85 mW stereo headphone amplifier for use with 3V and 5V supplies. The chip has a turn-on time of 0.1 ms, and switching from mono to a stereo configuration is via a headphone sense pin. Other features include pop and click suppression circuitry, an active-low micropower shutdown mode, instant-on low-power standby mode, and thermal shutdown protection circuitry. Available in 14-pin LLP, 14-pin TSSOP, and 12-lead micro SMD packaging, price is $1.10 each/1,000. NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.

Sponsored Recommendations

What are the Important Considerations when Assessing Cobot Safety?

April 16, 2024
A review of the requirements of ISO/TS 15066 and how they fit in with ISO 10218-1 and 10218-2 a consideration the complexities of collaboration.

Wire & Cable Cutting Digi-Spool® Service

April 16, 2024
Explore DigiKey’s Digi-Spool® professional cutting service for efficient and precise wire and cable management. Custom-cut to your exact specifications for a variety of cable ...

DigiKey Factory Tomorrow Season 3: Sustainable Manufacturing

April 16, 2024
Industry 4.0 is helping manufacturers develop and integrate technologies such as AI, edge computing and connectivity for the factories of tomorrow. Learn more at DigiKey today...

Connectivity – The Backbone of Sustainable Automation

April 16, 2024
Advanced interfaces for signals, data, and electrical power are essential. They help save resources and costs when networking production equipment.


To join the conversation, and become an exclusive member of Electronic Design, create an account today!