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The recommended PCB layout for the TDA7851L involves placing the device near the audio input connectors, using a ground plane to minimize noise, and keeping the analog and digital grounds separate. A 4-layer PCB with a dedicated ground plane is recommended.
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To optimize the TDA7851L for low noise and distortion, ensure proper power supply decoupling, use a low-noise voltage regulator, and minimize the length of the input traces. Additionally, use a high-quality audio capacitor and ensure the PCB layout is optimized for minimal noise coupling.
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The maximum power supply voltage for the TDA7851L is 12V, but it's recommended to operate the device at a voltage between 9V and 10V for optimal performance and to minimize power consumption.
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The TDA7851L can be configured for different audio input sources by adjusting the input impedance and gain settings. The device has multiple input channels, and the input selection can be controlled through the I2C interface. Refer to the datasheet for specific register settings and configuration details.
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The maximum output power of the TDA7851L is 2 x 25W into a 4Ω load, but this can be increased to 2 x 50W into a 2Ω load with an external amplifier. The output power can be limited by adjusting the gain settings and output stage configuration.
TDA7851L datasheet
by STMicroelectronics
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