Overview
The STA369BWTR, produced by STMicroelectronics, is a highly integrated digital audio processing and amplification solution. It belongs to the Sound Terminal® family, offering a comprehensive set of features for high-quality, high-efficiency, and all-digital amplification. This IC combines digital audio processing, digital amplifier control, and an FFX-power output stage, making it a versatile and powerful single-chip solution. The STA369BWTR is based on ST’s proprietary FFX (fully flexible amplification) processor technology, which supports various modulation schemes including ternary, binary, and binary differential PWM.
Key Specifications
| Parameter | Description |
|---|---|
| Supply Voltage | 5 V to 26 V (operating range), 30 V (absolute maximum rating) |
| Power Output Configurations | 2 channels of ternary PWM (stereo mode): 2 x 30 W into 8 Ω at 22 V; 3 channels (2.1 mode): 2 x 15 W + 1 x 30 W into 2 x 4 Ω, 1 x 8 Ω at 22 V; 2 channels of ternary PWM + stereo lineout ternary |
| Input Sampling Rates | Selectable 32 to 192 kHz |
| Digital Gain/Attenuation | +42 dB to -80 dB with 0.125 dB/step resolution |
| SNR and Dynamic Range | FFX® 100 dB SNR and dynamic range |
| Package | PowerSSO-36 with exposed pad down (EPD) |
| Operating Temperature | Not specified in the sources, but typically within industrial range for similar ICs |
Key Features
- Wide-range supply voltage: 5 V to 26 V (operating range), 30 V (absolute maximum rating)
- Four power output configurations, including 2.1-channel and stereo modes
- FFX® technology providing 100 dB SNR and dynamic range
- Selectable 32 to 192 kHz input sampling rates
- I2C control with selectable device address
- Digital gain/attenuation with +42 dB to -80 dB and 0.125 dB/step resolution
- Individual channel and master gain/attenuation, soft-volume update with programmable ratio
- Two independent DRCs configurable as dual-band anti-clipper or independent limiters/compressors
- Dedicated LFE processing for bass boosting with 0.125 dB/step resolution
- Audio presets including crossover filters, anti-clipping modes, and nighttime listening mode
- Up to 8 user-programmable biquads per channel
- Advanced AM interference frequency switching and noise suppression modes
- Thermal overload and short-circuit protection embedded
Applications
The STA369BWTR is suitable for a variety of applications requiring high-quality digital audio processing and amplification. These include:
- Personal electronics such as home audio systems, soundbars, and portable speakers
- Industrial applications where reliable and efficient audio processing is necessary
- Automotive audio systems requiring advanced digital signal processing and high-efficiency amplification
- Consumer electronics like TVs, gaming consoles, and multimedia devices
Q & A
- What is the operating voltage range of the STA369BWTR?
The operating voltage range is 5 V to 26 V, with an absolute maximum rating of 30 V
- What are the different power output configurations of the STA369BWTR?
The IC supports 2 channels of ternary PWM (stereo mode), 3 channels (2.1 mode), and 2 channels of ternary PWM with stereo lineout ternary
- What is the SNR and dynamic range of the STA369BWTR?
The STA369BWTR offers an FFX® 100 dB SNR and dynamic range
- What input sampling rates are supported by the STA369BWTR?
The IC supports selectable 32 to 192 kHz input sampling rates
- Does the STA369BWTR have built-in thermal protection?
- Can the STA369BWTR be controlled via I2C?
- What kind of audio presets are available on the STA369BWTR?
The IC includes presets for crossover filters, anti-clipping modes, and nighttime listening mode
- How many user-programmable biquads per channel does the STA369BWTR support?
- Does the STA369BWTR have advanced noise suppression features?
- What is the package type of the STA369BWTR?
