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pcm1795 数据表、产品信息和支持 | 德州仪器 ti.com.cn-凯发k8国际官网首页入口

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32 位、采样频率为 192khz 的高级分段音频立体声 dac

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功能与比较器件相同但引脚有所不同
预发布 具有 119db 动态范围的低功耗立体声音频 dac similar performance available in qfn package

pcm1795

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产品详情

number of dac channels 2 analog inputs 0 analog outputs 2 dac snr (typ) (db) 123 sampling rate (max) (khz) 200 control interface i2c, spi, tdmca resolution (bits) 32 architecture advanced segment operating temperature range (°c) -25 to 85 rating catalog
number of dac channels 2 analog inputs 0 analog outputs 2 dac snr (typ) (db) 123 sampling rate (max) (khz) 200 control interface i2c, spi, tdmca resolution (bits) 32 architecture advanced segment operating temperature range (°c) -25 to 85 rating catalog
28 79.56 mm² 10.2 x 7.8
  • 32-bit resolution
  • analog performance:
    • dynamic range: 123 db
    • thd n: 0.0005%
  • differential current output: 3.9 mapp
  • 8× oversampling digital filter:
    • stop-band attenuation: –98 db
    • passband ripple: ±0.0002 db
  • sampling frequency: 10 khz to 200 khz
  • system clock: 128, 192, 256, 384, 512, or
    768 fs with autodetect
  • accepts 16-, 24-, and 32-bit audio data
  • pcm data formats: standard, i2s, and left-
    justified
  • dsd format interface available
  • interface available for optional external digital
    filter or dsp
  • tdmca or serial port (spi™/i2c)
  • user-programmable mode controls:
    • digital attenuation:
      0 db to –120 db, 0.5-db/step
    • digital de-emphasis
    • digital filter roll-off: sharp or slow
    • soft mute
    • zero flag for each output
  • compatible with pcm1792a and pcm1796
    (pins and mode controls)
  • dual supply operation:
    • 5-v analog, 3.3-v digital
  • 5-v tolerant digital inputs
  • small ssop-28 package
  • 32-bit resolution
  • analog performance:
    • dynamic range: 123 db
    • thd n: 0.0005%
  • differential current output: 3.9 mapp
  • 8× oversampling digital filter:
    • stop-band attenuation: –98 db
    • passband ripple: ±0.0002 db
  • sampling frequency: 10 khz to 200 khz
  • system clock: 128, 192, 256, 384, 512, or
    768 fs with autodetect
  • accepts 16-, 24-, and 32-bit audio data
  • pcm data formats: standard, i2s, and left-
    justified
  • dsd format interface available
  • interface available for optional external digital
    filter or dsp
  • tdmca or serial port (spi™/i2c)
  • user-programmable mode controls:
    • digital attenuation:
      0 db to –120 db, 0.5-db/step
    • digital de-emphasis
    • digital filter roll-off: sharp or slow
    • soft mute
    • zero flag for each output
  • compatible with pcm1792a and pcm1796
    (pins and mode controls)
  • dual supply operation:
    • 5-v analog, 3.3-v digital
  • 5-v tolerant digital inputs
  • small ssop-28 package

the pcm1795 device is a monolithic cmos integrated circuit that includes stereo digital-to-analog converters (dacs) and support circuitry in a small ssop-28 package. the data converters use ti’s advanced segment dac architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. the pcm1795 provides balanced current outputs, letting the user optimize analog performance externally. the pcm1795 accepts pulse code modulation (pcm) and direct stream digital (dsd) audio data formats, thus providing an easy interface to audio digital signal processors (dsps) and decoder chips. the pcm1795 device also interfaces with external digital filter devices such as the df1704, df1706, and the pmd200 from pacific microsonics&trade. sampling rates up to 200 khz are supported. a full set of user-programmable functions is accessible through an spi or i2c serial control port that supports register write and readback functions. the pcm1795 device also supports the time-division-multiplexed (tdm) command and audio (tdmca) data format.

the pcm1795 device is a monolithic cmos integrated circuit that includes stereo digital-to-analog converters (dacs) and support circuitry in a small ssop-28 package. the data converters use ti’s advanced segment dac architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. the pcm1795 provides balanced current outputs, letting the user optimize analog performance externally. the pcm1795 accepts pulse code modulation (pcm) and direct stream digital (dsd) audio data formats, thus providing an easy interface to audio digital signal processors (dsps) and decoder chips. the pcm1795 device also interfaces with external digital filter devices such as the df1704, df1706, and the pmd200 from pacific microsonics&trade. sampling rates up to 200 khz are supported. a full set of user-programmable functions is accessible through an spi or i2c serial control port that supports register write and readback functions. the pcm1795 device also supports the time-division-multiplexed (tdm) command and audio (tdmca) data format.
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