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STW5094ADTLF bảng dữ liệu(PDF) 2 Page - STMicroelectronics |
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2 / 51 page STw5094A 2/51 – 11 mW operating power in voice codec mode (typ. at 2.7 V). – 1.8 V to 3.3 V CMOS compatible digital interfaces – Programmable PCM interface –I2C compatible control interface – Programmable master/slave serial audio data input interface (I2S and other formats) – Frequency programmable clock output APPLICATIONS ■ CDMA,GSM,DCS1800,PCS1900,JDC digital cellular telephones with MP3 and FM radio stereo listening functions ■ Portable devices with a stereo digital audio source and FM radio listening function GENERAL DESCRIPTION STw5094A is a low power asynchronous stereo audio DAC device with headphones amplifiers for high quality MP3 and FM radio listening. The STw5094A includes also an high performance low power combined PCM Codec ⁄ filter tailored to implement the audio front-end functions required by low voltage low power consumption digital cel- lular terminals with added MP3 and FM radio lis- tening. The STw5094A registers are accessed through an I2C-bus compatible interface. The STw5094A asynchronous stereo audio DAC section is suited for MP3, or any other audio stereo source, listening. It supports any rate from 8 kHz to 48 kHz, can tolerate jitter on audio data and does not requires an oversampled clock. The au- dio data serial interface can be master or slave, it is I2S compatible and supports other standard se- rial interface formats. The internal D to A convert- ers work with 18 bit input resolution. The stereo headphones drivers can also be used for FM radio listening via an auxiliary stereo ana- log input. A loudspeaker driver can also be used for monophonic group listening. The STw5094A voice Codec section can be con- figured either as a 14-bit linear or as an 8-bit com- panded PCM coder. The frame voice Codec sample rate can be either the standard 8 kHz val- ue or the extended 16 kHz one. In addition to the stereo audio DAC and Codec ⁄ fil- ter functions, STw5094A includes a tone ⁄ ring⁄ DTMF generator that can be used both in audio listening mode and in voice Codec mode, a sidetone generation, a buzzer driver output and a remote control function tailored to handle an ex- ternal on-hook off-hook button. STw5094A Voice Codec fulfills and exceeds D3 ⁄ D4 and CCITT recommendations and ETSI requirements for dig- ital handset terminals. The Stereo Audio DAC part fulfills and exceeds the requirements for MP3 quality and FM radio quality listening. Main appli- cations include digital mobile phones with added low-power high-quality MP3 and ⁄ or FM radio lis- tening features, or any battery powered equipment that requires Stereo Audio DAC with Headphones drivers. ORDER CODES Part Number Description STw5094AD/LF TFBGA 36 Tray STw5094ADT/LF TFBGA 36 Tape and Reel |
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