Measuring an op amp’s THD(total harmonic distortion) at frequenciesbelow 100 kHz is problematicbecause modern amplifiers have a THDrating that is much lower than that ofmost test equipment. The ...

As we’ve traced our no-nonsense path through the world of Hi-Fi audio, we’ve started with the listener, understood the limitations of the human ear, and thence proceeded to the loudspeaker. We’ve ...

Q: A quick question. Isn't THD important in the sound quality of a receiver? The lower the better? Also, when you see the 20 - 20,000 Hz versus 40 - 20,000 Hz, the higher number 40 will affect the ...

It’s been a while since the last installment in our Know Audio series, in which we investigated distortion as it applies to ...

Setting a benchmark for performance, the LM4562 audio op amp specifies a THD+N figure of 0.00003%. The device combines a 6-MHz, unity-gain bandwidth operational amplifier with a proprietary ...

A critical measure for all audio components is distortion, typically specified as total harmonic distortion (THD) or total harmonic distortion + noise (THD+N). THD is defined as: ... THD+N is the rms ...

International Solid-State Circuits Conference in San Francisco always seems to make space for audio amplifier developments, and this year is no exception, with some extraordinary distortion and noise ...

Q I want to buy a new receiver and am confused by the amplifier specifications. How do I know what they mean and what I need? — Gary K., Sewickley, Pa. A When choosing an amplifier or receiver the ...

Fundamental analog devices that serve applications such as high-resolution delta-sigma or SAR (successive-approximation-register) converter systems are feeling the crunch from amplifiers that have ...