{"id":7785,"date":"2026-06-27T03:11:50","date_gmt":"2026-06-27T03:11:50","guid":{"rendered":"https:\/\/ic-vendor.com\/pcm1840irtwr\/"},"modified":"2026-06-28T10:21:12","modified_gmt":"2026-06-28T10:21:12","slug":"pcm1840irtwr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/pcm1840irtwr\/","title":{"rendered":"PCM1840IRTWR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The PCM1840IRTWR is a quad-channel, 32-bit, 192-kHz Burr-Brown audio ADC from Texas Instruments. It supports four simultaneous differential inputs with 123 dB dynamic range, integrated PLL, microphone bias, and I2S\/TDM serial interface in a compact 24-pin WQFN package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Resolution<\/td>\n32-bit<\/td>\n<\/tr>\n
\u901a\u9053\u6570<\/td>\n4<\/td>\n<\/tr>\n
Sampling Rate<\/td>\n8 kHz to 192 kHz<\/td>\n<\/tr>\n
Dynamic Range<\/td>\n123 dB (with DRE enabled), 113 dB (DRE disabled)<\/td>\n<\/tr>\n
THD+N<\/td>\n-98 dB<\/td>\n<\/tr>\n
Full-Scale Input<\/td>\n2 VRMS differential<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3.3 V (single supply)<\/td>\n<\/tr>\n
Power per Channel<\/td>\n18.4 mW at 48 kHz<\/td>\n<\/tr>\n
Interface<\/td>\nI2S, LJ, 2-ch\/4-ch TDM<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nWQFN-24 (RTW), 4 mm \u00d7 4 mm<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Four simultaneous sampling differential inputs<\/li>\n
  • 123 dB dynamic range with Dynamic Range Enhancer<\/li>\n
  • Integrated high-performance audio PLL<\/li>\n
  • Microphone bias output (2.75 V)<\/li>\n
  • Hardware pin-controlled configuration<\/li>\n
  • Linear phase or low-latency filter selectable<\/li>\n
  • Master or slave I2S\/TDM bus operation<\/li>\n
  • DC removal high-pass filter<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Far-field microphone recording<\/li>\n
    • Smart speakers and voice assistants<\/li>\n
    • Professional audio recording equipment<\/li>\n
    • Automotive infotainment systems<\/td>\n<\/tr>\n
    • Cost-sensitive space-constrained audio systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PCM1840IRTWR is a quad-channel, 32-bit, 192-kHz Burr-Brown audio ADC from Texas Instruments. It supports four simultaneous differential inputs with 123 dB dynamic range, integrated PLL, microphone bias, and I2S\/TDM serial interface in a compact 24-pin WQFN package. Key Specifications Resolution 32-bit Number of Channels 4 Sampling Rate 8 kHz to 192 kHz […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[],"class_list":["post-7785","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics"],"acf":{"brief_explanation":"Quad 32-bit 192kHz audio ADC, 123dB DR, I2S\/TDM, PLL, MIC bias, WQFN-24","date_code":"","package_case":"WQFN-24 (4.0 x 4.0 x 0.75 mm)","in_stock":3803,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/pcm1840.pdf","price":"$1.72 @ 1ku","product_introduction":"The PCM1840 is a high-performance Burr-Brown audio ADC from Texas Instruments supporting up to four analog channels of simultaneous sampling. It supports differential line and microphone inputs with 2 VRMS full-scale signal, integrates microphone bias voltage, PLL, and DC removal HPF, and supports up to 192 kHz sampling rate. The device supports TDM, I2S, or LJ audio formats with hardware pin-level selectability. Master\/slave mode selection enables flexible audio bus interface operation. These integrated high-performance features, along with single 3.3 V supply operation, make it ideal for far-field microphone recording in cost-sensitive, space-constrained audio systems.","working_principle":"The PCM1840 employs a multi-bit delta-sigma ADC architecture with integrated analog and digital decimation filtering. Each of the four input channels has a dedicated delta-sigma modulator that oversamples the input signal and produces a 1-bit data stream. The digital decimation filter then converts this to 32-bit output data with selectable linear-phase or low-latency characteristics. An integrated PLL generates all required clock signals from a single master clock input, eliminating external clock generation. The Dynamic Range Enhancer (DRE) adaptively adjusts the front-end gain to extend the effective dynamic range to 123 dB. A fixed high-pass IIR filter removes DC offset at 0.00025 \u00d7 fS. The serial audio interface supports master or slave mode with I2S, LJ, or TDM formats.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>AVDD<\/td>Power<\/td>Analog supply (3.3 V)<\/td><\/tr>\n
      2<\/td>AREG<\/td>Power<\/td>Analog regulator output (1.8 V)<\/td><\/tr>\n
      3<\/td>VREF<\/td>Analog<\/td>Reference voltage filter<\/td><\/tr>\n
      4<\/td>AVSS<\/td>Power<\/td>Analog ground<\/td><\/tr>\n
      5<\/td>MICBIAS<\/td>Analog<\/td>Microphone bias output (2.75 V)<\/td><\/tr>\n
      6<\/td>IN1P<\/td>Analog<\/td>Channel 1 positive input<\/td><\/tr>\n
      7<\/td>IN1M<\/td>Analog<\/td>Channel 1 negative input<\/td><\/tr>\n
      8<\/td>IN2P<\/td>Analog<\/td>Channel 2 positive input<\/td><\/tr>\n
      9<\/td>IN2M<\/td>Analog<\/td>Channel 2 negative input<\/td><\/tr>\n
      10<\/td>IN3P<\/td>Analog<\/td>Channel 3 positive input<\/td><\/tr>\n
      11<\/td>IN3M<\/td>Analog<\/td>Channel 3 negative input<\/td><\/tr>\n
      12<\/td>IN4P<\/td>Analog<\/td>Channel 4 positive input<\/td><\/tr>\n
      13<\/td>IN4M<\/td>Analog<\/td>Channel 4 negative input<\/td><\/tr>\n
      14<\/td>SHDNZ<\/td>Digital<\/td>Hardware shutdown\/reset (active low)<\/td><\/tr>\n
      15<\/td>FMT1<\/td>Digital<\/td>Audio format select 1<\/td><\/tr>\n
      16<\/td>FMT0<\/td>Digital<\/td>Audio format select 0<\/td><\/tr>\n
      17<\/td>MSZ<\/td>Digital<\/td>Master\/slave select<\/td><\/tr>\n
      18<\/td>MD0<\/td>Digital<\/td>Mode configuration 0<\/td><\/tr>\n
      19<\/td>IOVDD<\/td>Power<\/td>Digital I\/O supply (1.8 V or 3.3 V)<\/td><\/tr>\n
      20<\/td>MD1<\/td>Digital<\/td>Mode configuration 1<\/td><\/tr>\n
      21<\/td>SDOUT<\/td>Digital<\/td>Audio serial data output<\/td><\/tr>\n
      22<\/td>BCLK<\/td>Digital<\/td>Bit clock<\/td><\/tr>\n
      23<\/td>FSYNC<\/td>Digital<\/td>Frame synchronization<\/td><\/tr>\n
      24<\/td>MCLK<\/td>Digital<\/td>Master clock input<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Far-Field Microphone Arrays:<\/strong> Four simultaneous channels with 123 dB DR enable smart speaker and voice assistant beamforming<\/li>\n
      • Professional Audio Recording:<\/strong> 32-bit\/192kHz performance with 2 VRMS full-scale input for studio-grade capture<\/li>\n
      • Automotive Infotainment:<\/strong> -40\u00b0C to +125\u00b0C operation with TDM interface for multi-microphone cabin noise cancellation<\/li>\n
      • Conference Systems:<\/strong> I2S\/TDM multi-channel output for beamforming and echo cancellation in video conferencing<\/li>\n
      • Industrial Voice Capture:<\/strong> Integrated PLL and MIC bias simplify microphone interface design<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Specs<\/th><\/tr>\n
        PCM1863DBTR<\/td>TI<\/td>2-ch, 103dB DR, lower cost<\/td>-<\/td>-<\/td><\/tr>\n
        PCM1865DBTR<\/td>TI<\/td>4-ch, 103dB DR, programmable gain<\/td>-<\/td>-<\/td><\/tr>\n
        ADS1675IPWR<\/td>TI<\/td>24-bit, 4MSPS, general-purpose ADC<\/td>-<\/td>-<\/td><\/tr>\n
        CS5368-DZZ<\/td>Cirrus Logic<\/td>6-ch, 114dB DR, TDM output<\/td>-<\/td>-<\/td><\/tr>\n
        AK5554VN<\/td>AKM<\/td>4-ch, 114dB DR, 768kHz<\/td>-<\/td>-<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/7785","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=7785"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/7785\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=7785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=7785"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=7785"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}