The LM4766 is a stereo audio amplifier capable of delivering typically 40W per channel with the non-isolated "NDL" package and 30W per channel with the isolated "NDB" package of continuous average output power into an 8Ω load with less than 0.1% (THD+N). Minimal amount of external components necessary. The IC"s extremely low noise floor at 2µV and its extremely low THD+N value of 0.06% at the rated power make the LM4766 optimum for high-end stereo TVs or minicomponent systems. Each amplifier within the LM4766 has an independent smooth transition fade-in/out mute that minimizes output pops. SPiKe protection means that these parts are safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks. The performance of the LM4766, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe) protection circuitry, places it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected safe operating area (SOA). The LM4766TF/NOPB is a stereo Audio Amplifier capable of delivering typically 40W per channel and 30W per channel of continuous average output power into a 8R load with less than 0.1% (THD+N).
Lm4766 vs lm3886 free#
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REACH SVHC Compliance No SVHC - No SVHC.Mounting Style Through Hole Through Hole Through Hole.Common Mode Rejection Ratio 75 dB 75 dB.
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Gain Bandwidth Product 8 MHz 8 MHz 8 MHz.Quiescent Current 48.0 mA 24.0 mA 48.0 mA.Classification Audio Amplifiers Audio Amplifiers Audio Amplifiers.Description TEXAS INSTRUMENTS LM4766TF/NOPB Audio Power Amplifier, AB, 2Channel, 40W, 20V to 60V, TO-220, 15Pins Audio Amp Speaker 2CH Stereo 40W Class-AB 15Pin(15+Tab) TO-220 Tube Audio Power Amplifier, 2Channel, 40W, 20V to 60V, TO-220, 15Pins.Hide Shared Attributes LM4766TF/NOPB LM4766T/NOPB LM4766T.
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The issue isn't directly related to capacitor choices at all. But it is because of a too-small transformer. That's the "cost effective" mass market, poorer quality, retail amp sound. If you started out with a too-small transformer, then all of the possible power cap options would be wrong. So now I can answer the original question: Conversely, there are other amplifiers, like TDA7294 and many of STK that could use 220uF (at the amplifier board, and in addition to a real power board), if design permits. And, it works well for Parallel LM3886, Parallel LM4780. Their approach provides a nicely level response with non-inverting LM1875 and some of their other chips. With parallel and solo chips, the speaker return/ground is directed to the 0v tap upon the power supply board. National Semiconductor, the maker of both chips, in their AN1192 document, recommends 470uF caps at the amplifier chip in addition to a real power supply board. But, you really don't want a blast of only mids and highs (insufficient capacitance) because that's just another way to say disproportionately poor bass response. The capacitors directly at the amplifier board will have an effect on the proportion of mid-range output, the heat output, and sometimes the clarity. Its better to use a larger than necessary transformer instead of a smaller than necessary transformer.