NATIONAL SEMICONDUCTOR'S 30 WATT MONOLITHIC POWER AMPLIFIER PROVIDES HIGH QUALITY AUDIO SOUND
- .08% Typical THD+N at Full-Rated Output Power into 8 Ohms
- SPiKe(tm) Protection Provides Industry's Most Comprehensive Protection Scheme
- Minimum Amount of External Components Needed
- Quiet Fade-In, Fade-Out Mute Function
- Power-Conserving Standby Mode
- TO-220 Isolated Package Reduces Electrical Hazard
SANTA CLARA, Calif., June 23, 1995 -- Capable of delivering typically 30W of continuous average output power into an 8ohm load with less than 0.08-percent THD from 20Hz to 20kHz, the LM4700TF monolithic audio power amplifier from National Semiconductor Corporation delivers high-output power while maintaining a level of audio sound rivaling that of discrete solutions. This single-channel audio power amplifier expands National's premier Overture(reg) audio power amplifier series and adds to its broad line of technologies for shaping information.
The high level of performance exhibited by the LM4700TF is augmented by the fact that it will survive the most severe conditions due to its internal SPiKe(tm) protection. The Overture(reg) amplifier series' SPiKe(tm) protection is a unique circuit that makes the IC nearly impervious to damage from instantaneous temperature peaks, overvoltage, undervoltage, and overloads. This protection monitors the output transistor's safe operating area (SOA) and dynamically protects the device from SOA violations and fault conditions.
The LM4700TF also features a fade-in/fade-out mute mode that does not cause output transients when enabled or disabled. By combining the mute function with under-voltage protection that minimizes output spikes and power transients during power up and power down, the LM4700TF is virtually "popless" and "clickless." Also, the LM4700TF offers a standby function which can be controlled by external digital logic. This function drastically lowers current consumption to 2.1mA (typ.), making it ideal for designing into the industry's growing line of "green" electronics.
The LM4700TF is perfect for applications requiring high-quality amplification in a single package. Ideal applications include home mini-combination stereo systems, powered speakers, high-end television sets and A/V multi-channel receivers.
The 30-Watt LM4700TF is manufactured in an 11-lead, isolated TO-220 package. This package eliminates the need for an insulator, lowering overall manufacturing cost and minimizing the possibility of short-circuiting due to improper assembly or electrical and mechanical failures.
A95002AU
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