MAS3507D

The MAS3507D is a single-chip MPEG layer 2/3 audio decoder for use in audio broadcast or memory-based playback applications. Due to embedded memories, the embedded DC/DC up-converter, and the very low power consumption, the MAS3507D is ideally suited for portable electronics.

Features of the MAS3507D are:(1)serial asynchronous MPEG bit stream input (SDI);(2)parallel (PIO-DMA) Input;(3)broadcast and multimedia operation mode;(4)automatic locking to given data rate in broadcast mode;(5)data request triggered by demand signal in multimedia mode;(6)output audio data delivered (in various formats) via an I2S bus (SDO);(7)digital volume / stereo channel mixer / bass / treble;(8)output sampling clocks are generated and controlled internally;(9)ancillary data provided via I2C interface;(10)status information accessible via PIO pins or I2C;(11)power management for reduced power consumption at lower sampling frequencies;(12)low power dissipation (30 mW @ fs £ 12 kHz, 46 mW @ fs £ 24 kHz, 86 mW @ fs > 24 kHz @ 2.7 V);(13):supply voltage range: 1.0 V to 3.6 V due to built-in DC/DC converter (1-cell/2-cell battery operation);(14):adjustable power supply supervision;(15)power-off function;(16)additional functionality achievable via download software (CELP voice Decoder, ADPCM encoder / decoder).

The absolute maximum ratings of the MAS3507D can be summarized as:(1):the parameter is ambient operating temperature,the symbol is TA,the rating is -30 to 85,the unit is ;(2):the parameter is storage temperature,the symbol is Ts,the rating is -40 to 125,the unit is ;(3):the parameter is power dissipation,the symbol is PMAX,the rating is 600,the unit is mW;(4):the parameter is supply voltage,the symbol is VSUP,the rating is 5.5,the unit is V;(5):the parameter is input voltage, all digital inputs,the symbol is VIdig,the rating is -0.3 to VSUP+0.3,the unit is V;(6):the parameter is input current, all digital inputs,the symbol is IIdig,the rating is -20 to +20,the unit is mA;(7):the parameter is current, all digital output,the symbol is IOUT,the rating is 0.5,the unit is A;(8):the parameter is current,the symbol is IOutDC,the rating is 1.5,the unit is A.