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SM5849F датащи (PDF) - Nippon Precision Circuits Inc

SM5849F Datasheet PDF - Nippon Precision Circuits Inc
номер детали SM5849F
скачать  SM5849F скачать

объем файла   352.0 Kbytes
Page   26 Pages
производитель  NPC [Nippon Precision Circuits Inc]
домашняя страница  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc
подробное описание детали Asynchronous Sample Rate Converter

SM5849F Datasheet (PDF)

Go To PDF Page скачать датащи
SM5849F Datasheet PDF - Nippon Precision Circuits Inc

номер детали SM5849F
скачать  SM5849F Click to download

объем файла   352.0 Kbytes
Page   26 Pages
производитель  NPC [Nippon Precision Circuits Inc]
домашняя страница  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc
подробное описание детали Asynchronous Sample Rate Converter

SM5849F датащи (HTML) - Nippon Precision Circuits Inc

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SM5849F Информация о продукте

OVERVIEW

The SM5849AF is a digital audio signal, asynchronous sample rate converter LSI. It supports 16/20/24-bit word length input data, 16/20/24-bit word length output data, 2kHz to 100kHz input sample rate range, and 4kHz to 200kHz output sample rate range. It also features a built-in digital deemphasis filter and digital attenuator.



FEATURES

Functions

■ Left/right-channel processing (stereo)

■ 2 to 100kHz input sample rate range (fsi)

■ 4 to 200kHz output sample rate range (fso)

■ 0.45 to 2.2-times variable sample rate conversion ratio (fso/fsi)

■ Asynchronous input and output timing (clock inputs)

■ System clock inputs (input and output clocks inde pendent)

   • 256fsi or 384fsi input system clock select

   • 256fso or 384fso output system clock select

■ Deemphasis filter

   • IIR-type filter

   • 44.1, 48 or 32kHz

■ Digital attenuator

   • 11-bit data, 1025 levels

   • Smooth attenuation change

   • +12dB gain shift function

■ Direct mute function

■ Through mode operation

   • Direct connection from input to output

■ Output data clocks (LRCO, BCKO)

   • Slave mode: external input

   • Master mode: output system clock generated internally

■ Dither round-off processing

   • Dither round-off ON/OFF selectable

■ 3.3V single supply

■ 80-pin QFP

■ Silicon-gate CMOS process



Filter Characteristics and Converter Efficiency

■ 24-bit internal data word length

■ Deemphasis filter characteristics (IIR filter)

   • ±0.03dB gain deviation from ideal filter charac teristics

■ Anti-aliasing LPF characteristics

   • Output/input sample rate conversion ratio automatic filter select (6 FIR filters)

      - Up converter LPF

         1.0 to 2.2 times

      - Down converter LPF I

         0.92 times: 48.0 to 44.1kHz

      - Down converter LPF II

         0.73 times: 44.1 to 32.0kHz

      - Down converter LPF III

         0.67 times: 48.0 to 32.0kHz

      - Down converter LPF IV

         0.5 times: 48.0 to 24.0kHz

      - Down converter LPF V

         0.45 times: 48.0 to 22.1kHz

   • ±0.00005dB passband ripple

   • > 110dB stopband attenuation

■ Converter noise levels

   • ≤ −110dB internal calculation (quantization) noise

   • −98dB (16-bit output), −122dB (20-bit output), and −146dB (24-bit output) word rounding noise

■ Output S/N ratio (theoretical values)



Interfaces

■ Input data format

   • 2s-complement, L/R alternating, serial

   • IIS/non-IIS format

■ Output data format

   • 2s-complement, MSB first, L/R alternating, serial

   • Continuous bit clock

  

APPLICATIONS

■ Digital audio equipment-interface sample rate conversion (AV amplifiers, CD-R, DAT, MD and 8mm VTRs)

■ Commercial recording/editing equipment sample rate conversion




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