RIAA preamplifier CA3410
A complete stereo preamplifier can be created by duplicating this circuit with the remaining two amplifiers of the CA3410.
The circuit utilizes the CA3410, a BiMOS operational amplifier known for its low noise and high performance, particularly in audio applications. The design features RIAA equalization, which is essential for accurately reproducing vinyl records, as it compensates for the frequency response of the recording and playback systems. Tone controls are integrated into the circuit to allow users to adjust bass and treble levels, enhancing the listening experience according to personal preferences.
The gain stage of the preamplifier is designed to provide adequate output voltage while maintaining low distortion levels. With a target output of 6 V, the circuit ensures compatibility with a wide range of power amplifiers, facilitating seamless integration into various audio systems. The low total harmonic distortion (THD) of less than 0.035% over the specified frequency range indicates that the circuit maintains audio fidelity, making it suitable for high-quality audio applications.
For a full stereo preamp configuration, the remaining two amplifiers within the CA3410 can be utilized. This allows for the duplication of the initial circuit, enabling separate left and right channel processing. Each channel will benefit from the same level of performance and functionality, ensuring that both channels maintain consistent audio quality and characteristics.
In summary, this circuit design serves as a robust foundation for a high-fidelity audio preamplifier, leveraging the capabilities of the CA3410 op-amp to achieve exceptional audio performance with minimal distortion. The inclusion of RIAA equalization and tone controls further enhances its versatility, making it an excellent choice for audiophiles and professionals in the audio industry.This circuit has read the RIAA equalization, tone controls, and adequate gain to drive most power amplifiers conunercial by using CA3410 op amp BiMOS. Total harmonic distortion, pushed to provide an output of 6-V, is less than 0.035% in audio-frequency range from 150 Hz to 40 kHz.
Full stereo preamp is to duplicate this circuit using the CA3410 remaining two amplifiers. 🔗 External reference
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