Description

The STAC9274D5TAEB4X is a high-performance HD audio codec from SigmaTel that provides theater-quality audio and integrates multiple features for multimedia use. This codec supports four digital microphones and analog stereo microphones and provides a high signal-to-noise ratio of up to 105dB for digital-to-analog conversion and up to 90dB for analog-to-digital conversion. The STAC9274D5TAEB4X comes in a 48-pin LQFP package and has a wide range of application scenarios in multimedia devices.

Specifications and features

• High performance HD Audio CODEC provides theater-quality audio
• High-performance Σ∆ technology
• 105 dB DAC SNR and 90 dB ADC SNR
• Supports 7.1 audio or 5.1 audio with simultaneous RTC channels
• 24-bit resolution with up to 192 KHz sample rates
• Direct interface for up to four digital microphones
• Analog stereo microphone with microphone boost of 0, 10, 20, 30, and 40dB
• Six adjustable Vref outputs for microphone bias
• Integrated headphone amps (3)
• Volume up/down control, jack insertion detection, and impedance sensing support
• Digital PC beep to all outputs
• +3.3 V to +5 V analog power supply options
• Environmental 48-pin LQFP package option

Application Scenarios

The STAC9274D5TAEB4X codec can be applied to various multimedia devices, such as desktops, laptops, tablets, and mobile phones. It can provide high-quality audio and powerful microphone input, which is suitable for communication and sound recording. Additionally, the STAC9274D5TAEB4X can also be used in audio systems, such as home theaters and music players, to improve the quality of sound output.

Comparison

• Provides theater-quality audio
• Supports multiple RTC channels for better communication experience
• High signal-to-noise ratio for both digital-to-analog and analog-to-digital conversion
• Direct interface for up to four digital microphones for powerful voice input

• Requires a separate audio amplifier for large-scale audio systems
• May not be compatible with certain older devices due to a lack of legacy interface support