http://www.micronas.com/consumer_products/by_function/uac_355xb/product_information/index.html UAC 357xB
Main Features
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Single-chip, full-speed USB 2.0 compliant, stereo audio ADC and DAC
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Dual microphone input
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Pseudo-differential line input
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Capless headphone connection
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Output reference for ground noise cancellation
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Supports 8/16-bit mono/stereo recording and up to 24-bit playback
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Supports streaming of compressed audio (Dolby Digital, MP3) to external decoders
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Vendor ID, product ID, strings and device configuration with external EEPROM
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Bus-powered or self-powered mode
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12 GPIO pins with HID support
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I2S input/output interface
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Integrated stereo headphone amplifier
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I2C interface (master/slave)
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Customized firmware extensions with plug-ins possible
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Packages: PMQFP64-2 or PQFN64-1
Audio Features
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Independent adaptive sample rates of 6.4 to 48 kHz for USB recording and playback (enhanced full-duplex)
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Audio baseband control: bass, treble, loudness, volume, balance, and mute
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Dynamic bass management (Micronas Bass MB)
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Digital speaker equalizer (5-band parametric equalizer)
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THD better than −90 dB and SNR of -typically 96 dB for D/A converters
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THD better than −90 dB and SNR of -typically 92 dB for A/D converters
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Power supply rejection ratio >95 dB for analog outputs
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Family members
Members of the UAC 357xB Family
The three family members are optimized for different applications and needs. The UAC 3574B is ideally suited for self-powered USB headset applications. The UAC 3575B offers additional stereo line input support. The UAC 3576B adds the flexibility to boot customized firmware from an external EEPROM of up to 8 kB. A firmware SDK implementing all standard USB control, audio, and HID class features is available.
