STMicroelectronics provides a recommended PCB layout in the application note AN4841, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
The STA381BWSTR can be configured for different audio formats and sampling rates using the I2C interface. The device supports various audio formats, including PCM, I2S, and TDM, and sampling rates up to 192 kHz. The configuration is done by writing to the device's registers, as described in the datasheet and application notes.
The power consumption of the STA381BWSTR varies depending on the operating mode. In active mode, the device consumes around 12 mA, while in standby mode, it consumes around 1 mA. The power consumption can be further reduced in shutdown mode, which is around 10 μA. The exact power consumption values can be found in the datasheet.
The STA381BWSTR has a dedicated mute pin (MUTE) that can be used to mute the audio output. When the MUTE pin is pulled low, the audio output is muted. Additionally, the device also has a software-controlled mute function that can be implemented by writing to the device's registers.
The STA381BWSTR has a thermal pad on the bottom of the package that should be connected to a thermal ground plane on the PCB to dissipate heat. Additionally, the device has a thermal shutdown feature that turns off the device when the junction temperature exceeds 150°C. It is recommended to follow the thermal management guidelines provided in the datasheet and application notes to ensure reliable operation.
STA381BWSTR datasheet
by STMicroelectronics
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