Well, it's seems that today everyone is focused on reducing the size of electronic devices. SoundTerminal or STMicroelectronics has developed a new Audio Chip named "STA333IS" which is just 2.57x3.24 mm but produces a whooping 20W of audio output.The "STA333IS" can be installed in any space-constrained environment such as LCD and LED televisions due to it's smaller size factor. The necessary operating voltage range is 4.5 to 18 V.
The "STA333IS" is also suitable for operation under a battery operated environment.
The audio signal is manipulated digitally, depending mainly on STM's proprietary fully flexible amplification (FFX) for digital audio processing. Two channels of FFX processing are provided, one for each stereo channel.
The chip also boasts the ability to filter the AM radio interference.
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| Image source: STMicroelectronics |
Key Features:
Wide-range supply voltage (4.5 V - 20 V)
2 channels of ternary PWM (stereo mode)
2 channels of 24-bit FFX™
100 dB SNR and dynamic range
Selectable 32- to 192-kHz input sampling rates
Digital gain -80 dB to +48 dB in 0.5 dB steps
Software volume update
Individual channel and master gain/attenuation
Individual channel and master software and hardware mute
Independent channel volume bypass
Automatic zero-detect mute
Automatic invalid input detect mute
Short-circuit detection at startup (Out-Vcc, Out-Gnd, Out 1b-Out 2a)
2-channel I2S input data interface
2 Hz DC cut filter (input)
Input channel mapping
Automatic volume control for limiting maximum power
96 kHz internal processing sampling rate, 24-bit precision
Advanced modes for AM interference frequency switching and noise suppression
Embedded thermal-overload and short-circuit protection
Video application: 576 * fSinput mode support
Check out the Datasheet from STMicroelectronics: Datasheet.pdf
