LM4562 is a high-fidelity dual operational amplifier introduced by National Semiconductor in recent years, its distortion is ultra-small, only 0.00003% of the total harmonic distortion and noise (THD + N), in other words, the distortion of this operational amplifier is almost negligible.
The LM4562 chip features extremely low distortion, low noise, high slew rate, a wide operating voltage range, and high output current for unprecedented performance. Because of these advantages, this operational amplifier is suitable for professional-grade and high-end audio systems, such as audio/video system receivers, preamplifiers, audio decoders and hi-fi amplifiers, as well as various medical imaging systems and industrial equipment.
The LM4562 chipset is uniquely designed with a high-speed 6MHz unity-gain bandwidth operational amplifier and a proprietary stereo audio driver amplifier. In standard operation, the op amp has an input noise density as low as 2.7nV/√Hz, a midrange noise corner of 60Hz, and an output current of 26mA to drive a 600Ω load. The LM4562 features a slew rate of 20V/μs and a gain bandwidth of 55MHz.
The LM4562 chipset can be configured to operate in either ±2.5V or ±2.5Mbps, with a maximum of 1.5Gbps. The LM4562 is capable of stable operation over a supply voltage range of ±2.5V to ±17V, with a maximum output current of 45mA. When operated over this supply voltage range, the chip's input circuitry achieves a ****-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) of more than 108dB, while the input bias current is as low as 10μA (typical).
YD2030 is a domestically produced amplifier IC with exactly the same parameters as TDA2030. The sound quality is average. Interested you can switch to TDA2040, LM1875 to try, the effect is good.