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National Semiconductor Introduces Industry’s Lowest ...

    https://www.edn.com/national-semiconductor-introduces-industrys-lowest-distortion-high-fidelity-audio-op-amps/
    National’s 44V audio op amp family includes two package versions of the LME49860 dual, while the 34V family consists of the LME49710 single, LME49720 dual and the LME49740 quad op amps. They join the multiple award-winning 34V LM4562 dual, high-fidelity audio op amp as the newest members of National’s high-performance audio family.

National Semiconductor audio sound room - EDN

    https://www.edn.com/national-semiconductor-audio-sound-room/
    National’s multiple award-winning LM4562 audio op amp is inside the power supply regulators, which connect to National’s soon to be released headphone-buffer current driver. The two mono-block power amplifiers each employ National’s LME49810 audio power amplifier driver’s for driving the left and right Wilson Watt-Puppy speakers.

National Semiconductor LM4562NA Audio Amplifier …

    https://www.amazon.com/National-Semiconductor-LM4562NA-Audio-Amplifier/dp/B00V09D9US
    LM4562NA DIP-8 HI-Fi Audio Operational Op Amp Amplifiers IC Low Distortion Noise. Decsription: The LM4562 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. Combining advanced leading-edge process technology with state-of-the-art circuit design, the …

Op Amp Circuit Collection - UC Santa Barbara

    https://web.ece.ucsb.edu/Faculty/rodwell/Classes/ece2c/resources/an-31.pdf
    Op Amp Circuit Collection AN-31 National Semiconductor Application Note 31 February 1978 Op Amp Circuit Collection SECTION 1—BASIC CIRCUITS Inverting Amplifier VOUT eb R2 R1 VIN RIN e R1 TL/H/7057–1 Non-Inverting Amplifier VOUT e R1 a R2 R1 VIN TL/H/7057–2 Difference Amplifier VOUT e # R1 a R2 R3 a R4J R4 R1 V2 b R2 R1 V1 For R1 e R3 and R2 e R4 VOUT e R2 …

The LM4562 dual audio op amp - Electronic Products

    https://www.electronicproducts.com/the-lm4562-dual-audio-op-amp/
    National Semiconductor won the Product of the Year Award for its LM4562 dual audio op amp. We recently communicated with lead designer Matsuro Koterasawa and asked him about the development of the part. The need. Audio performance levels have risen dramatically in the last 20 years. The last audio op amps were designed over 20 years ago.

New Op-Amps Promise High-End Sound - The Absolute …

    https://www.theabsolutesound.com/articles/new-op-amps-promise-high-end-sound
    August 16 – A new generation of operational amplifiers (op-amps) and power-amplifier drivers from National Semiconductor might result in a wholesale improvement in sound quality across a wide range of audio products. Op-amps are everywhere: preamplifier linestages, CD players, digital-to-analog converters, and the front ends of power amplifiers, to name just a few product …

Op Amp Circuit Collection AN-31 - Frank's Hospital Workshop

    http://frankshospitalworkshop.com/electronics/documents/OP%20Amp%20Circuit%20Collection%20-%20National.pdf
    Op Amp Circuit Collection Note: National Semiconductor recommends replacing 2N2920 and 2N3728 matched pairs with LM394 in all application circuits. Section 1—Basic Circuits Inverting Amplifier Non-Inverting Amplifier 00705701 00705702 Difference Amplifier Inverting Summing Amplifier 00705703 For minimum offset error due to input bias current 00705704

National Semiconductor LM10 operational amplifier - …

    https://www.computerhistory.org/revolution/analog-computers/3/156/439
    National Semiconductor LM10 operational amplifierAppears In: Op-amp Circuit Design. National Semiconductor LM10 operational amplifier. The LM10, another of Bob Widlar’s brilliant operational amplifier designs, functioned with very low …

An Application Guide for Op Amps

    https://www.engrcs.com/components/OpAmpApplications.pdf
    An Applications Guide for Op Amps AN-20 National Semiconductor Application Note 20 February 1969 An Applications Guide for Op Amps INTRODUCTION The general utility of the operational amplifier is derived from the fact that it is intended for use in a feedback loop whose feedback properties determine the feed-forward

DIY Op Amps - PassDiy

    https://www.passdiy.com/pdf/diyopamp.pdf
    deliver the best semiconductor or resistor for each part of the circuit, and ... particularly when applied to audio applications. How Op Amps Work First, a little tutorial on how op amps work. Fig. 1 shows an op amp, which has five connections to the outside world. ... but my favorites come from National Semiconductor's Linear Application Notes ...

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