Overview
The STA333BW is a high-power, single-chip digital audio amplifier integrated circuit produced by STMicroelectronics. It is part of the Sound Terminal® family, designed to provide high-quality and high-efficiency digital audio processing and power output. The IC combines digital audio processing, digital amplifier controls, and power output stages, making it a comprehensive solution for various audio applications.
The STA333BW supports multiple power output configurations, including 2 channels of ternary PWM, 2 channels of ternary PWM with a PWM output, and 2.1 channels of binary PWM. It also features a wide-range supply voltage from 4.5 V to 21.5 V and supports various audio input formats, including I²S.
This device is known for its advanced digital processing features, including up to 5 programmable biquads per channel, dynamic range compression (DRC), and advanced AM radio interference reduction modes. It is highly versatile and cost-effective, making it suitable for a range of audio systems.
Key Specifications
| Parameter | Description |
|---|---|
| Supply Voltage | 4.5 V to 21.5 V |
| Power Output Configurations | 2 channels of ternary PWM (2 x 20 W into 8 Ω at 18 V) + PWM output, 2 channels of ternary PWM (2 x 20 W into 8 Ω at 18 V) + ternary stereo line-out, 2.1 channels of binary PWM (2 x 9 W into 4 Ω + 1 x 20 W into 8 Ω at 18 V) |
| Input Sample Rates | Selectable 32- to 192-kHz |
| SNR and Dynamic Range | Over 100 dB |
| Digital Control Interface | I²C with selectable device address |
| Gain/Attenuation | Digital gain/attenuation +48 dB to -80 dB with 0.5-dB/step resolution |
| Protection Features | Thermal overload and short-circuit protection |
| Package | PowerSSO-36 with exposed pad down (EPD) |
Key Features
- Wide-range supply voltage from 4.5 V to 21.5 V
- Multiple power output configurations: ternary PWM, binary PWM, and mixed configurations
- High-quality conversion from PCM audio to FFX PWM switching with over 100 dB SNR and dynamic range
- I²C control with selectable device address
- Digital gain/attenuation from +48 dB to -80 dB with 0.5-dB/step resolution
- Up to 5 programmable biquads (EQ) per channel
- Dynamic range compression (DRC) and anticlipping mode
- Advanced AM radio interference reduction modes
- Individual channel and master gain/attenuation, soft/hard mute, and independent channel volume control
- Thermal overload and short-circuit protection
- Pin and SW compatible with other Sound Terminal® family members
Applications
The STA333BW is suitable for a variety of audio applications, including:
- Home audio systems
- Automotive audio systems
- Portable audio devices
- Professional audio equipment
- Consumer electronics requiring high-quality audio output
Its versatility in power output configurations and advanced digital processing features make it an ideal choice for systems requiring high-efficiency and high-quality audio.
Q & A
- What is the supply voltage range of the STA333BW?
The supply voltage range of the STA333BW is from 4.5 V to 21.5 V.
- What are the different power output configurations supported by the STA333BW?
The STA333BW supports multiple configurations, including 2 channels of ternary PWM, 2 channels of ternary PWM with a PWM output, and 2.1 channels of binary PWM.
- What is the SNR and dynamic range of the STA333BW?
The STA333BW provides over 100 dB of SNR and dynamic range.
- What interface does the STA333BW use for digital control?
The STA333BW uses an I²C interface with a selectable device address.
- What is the range of digital gain/attenuation provided by the STA333BW?
The digital gain/attenuation range is from +48 dB to -80 dB with 0.5-dB/step resolution.
- Does the STA333BW support programmable equalization?
Yes, the STA333BW supports up to 5 programmable biquads (EQ) per channel.
- What protection features are included in the STA333BW?
The STA333BW includes thermal overload and short-circuit protection.
- What package type is the STA333BW available in?
The STA333BW is available in a PowerSSO-36 package with an exposed pad down (EPD).
- Is the STA333BW compatible with other Sound Terminal® family members?
Yes, the STA333BW is pin and SW compatible with other Sound Terminal® family members.
- What are some common applications of the STA333BW?
The STA333BW is commonly used in home audio systems, automotive audio systems, portable audio devices, professional audio equipment, and other consumer electronics requiring high-quality audio output.
