The ChipSourceTek-CST8250 is a high-performance dual-channel Class AB/D stereo audio amplifier that uses advanced technology and design to deliver superior performance and reliability for portable audio products.

1. Product overview

1.1. Output power:

    The ChipSourceTek-CST8250 provides an output power of 8.0W per channel, and the total harmonic distortion plus noise (THD+N) is only 10% at a load impedance of 3Ω+15UH at a 7.0V supply voltage. When the load impedance is increased to 4Ω+33UH, the output power is 6.6W, and the performance of low distortion is also maintained.

1.2. Working voltage:

    The chip supports a wide operating voltage range, from 2.8V to 7.0V, making it suitable for a variety of different battery-powered devices.

1.3. Low distortion and low noise:

    The ChipSourceTek-CST8250 features extremely low total harmonic distortion and noise, ensuring excellent sound quality performance. In addition, its high power supply rejection ratio (PSRR) effectively reduces interference from RF noise, further improving audio clarity.

2. Technical characteristics

2.1. PWM modulation structure and gain built-in mode:

    The design without an external filter not only reduces the complexity of the system, but also reduces the number of external components and the PCB area, thereby reducing the system cost and simplifying the design process.

2.2. High performance and fast start time:

    Up to 90% efficiency and fast startup times make the ChipSourceTek-CST8250 ideal for portable applications. Its small package size also helps to reduce the size of the device and improve portability.

2.3. DRC Technology:

    The unique dynamic range control (DRC) technology effectively reduces the waveform top cutting distortion during high power output, and has better dynamic response compared with similar products.

2.4. Multi-mode switching function:

    The ChipSourceTek-CST8250 supports switching between headset mode and power amplifier mode to adapt to different audio output needs. In headphone mode, the internal circuit can directly drive the stereo headphone; In power amplifier mode, a stereo speaker can be connected.

2.5. First-line pulse function:

    Class D, Class AB or Off modes can be switched through single pin control, which not only saves IO port resources, but also enables optimal energy management in different modes.

2.6. Protection function:

    It includes overcurrent protection (OCP), overheat protection (OTP) and undervoltage shut-off (UVLO) to enhance system stability and reliability. At the same time, the extremely low shutdown current prolongs the standby time of the system.

2.7. POP-click suppression:

    Built-in POP-click suppression on and off improves the listening experience and simplifies the system's debugging process.

2.8. Package form:

    The eSOP10 package with heat sink is available for easy installation and improved thermal performance and reliability.

3. Application scenarios

    ChipSourceTek-CST8250 is widely used in a variety of portable audio devices, such as Bluetooth speakers, wireless headphones, personal media players, etc. Due to its efficient use of power and compact design, it is also ideal for use in battery-powered devices, which can significantly extend the life of the device. Whether for home entertainment or outdoor activities, the ChipSourceTek-CST8250 delivers high-quality audio output.

4. Conclusion

    The ChipSourceTek-CST8250 is a powerful, high-performance audio amplifier that is particularly suitable for portable electronic devices that require high performance audio output. Its unique technical features not only improve sound quality, but also simplify the design process and reduce costs. The ChipSourceTek-CST8250 is a trusted choice for consumers and manufacturers looking for a high-quality audio experience.