{"id":6966,"date":"2026-06-22T03:17:08","date_gmt":"2026-06-22T03:17:08","guid":{"rendered":"https:\/\/materialparts.com\/ad7891ysz-1\/"},"modified":"2026-06-22T03:17:08","modified_gmt":"2026-06-22T03:17:08","slug":"ad7891ysz-1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ad7891ysz-1\/","title":{"rendered":"AD7891YSZ-1"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The AD7891YSZ-1 from Analog Devices is an 8-channel 12-bit 500kSPS data acquisition system with parallel\/serial interface, 8-channel multiplexer, and MQFP-44 package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0646\u0648\u0639<\/td>\n8-Channel 12-bit Data Acquisition System<\/td>\n<\/tr>\n
Resolution<\/td>\n12 bits<\/td>\n<\/tr>\n
\u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n8 (single-ended) via internal multiplexer<\/td>\n<\/tr>\n
Throughput Rate<\/td>\n500 kSPS<\/td>\n<\/tr>\n
Analog Input Range<\/td>\n+\/-10V (grade -1); +\/-2.5V (grade -2)<\/td>\n<\/tr>\n
Input Overvoltage<\/td>\n+\/-17V (protected)<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nParallel (8-bit\/12-bit) or Serial (SPI-compatible)<\/td>\n<\/tr>\n
SNR<\/td>\n70 dB (typical)<\/td>\n<\/tr>\n
THD<\/td>\n-78 dB (typical)<\/td>\n<\/tr>\n
INL<\/td>\n+\/-1 LSB (typical)<\/td>\n<\/tr>\n
DNL<\/td>\n+\/-0.75 LSB (typical)<\/td>\n<\/tr>\n
Conversion Time<\/td>\n1.68 us (typical)<\/td>\n<\/tr>\n
Acquisition Time<\/td>\n0.32 us (typical)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n+5V (analog); +5V (digital)<\/td>\n<\/tr>\n
\u062a\u0628\u062f\u064a\u062f \u0627\u0644\u0637\u0627\u0642\u0629<\/td>\n70 mW (typical)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nMQFP-44 (10 x 10 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C (Y grade)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 8-channel single-ended input with internal multiplexer<\/li>\n
  • 12-bit resolution at 500kSPS throughput<\/li>\n
  • +\/-10V analog input range (grade -1)<\/li>\n
  • Parallel (8\/12-bit) and serial (SPI) interface options<\/li>\n
  • +\/-17V input overvoltage protection<\/li>\n
  • Internal track-and-hold amplifier<\/li>\n
  • Internal +2.5V reference (or external reference)<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial data acquisition<\/li>\n
    • Process control monitoring<\/li>\n
    • Automotive test equipment<\/li>\n
    • Multi-channel signal measurement<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AD7891YSZ-1 from Analog Devices is an 8-channel 12-bit 500kSPS data acquisition system with parallel\/serial interface, 8-channel multiplexer, and MQFP-44 package. Key Specifications Type 8-Channel 12-bit Data Acquisition System Resolution 12 bits Channels 8 (single-ended) via internal multiplexer Throughput Rate 500 kSPS Analog Input Range +\/-10V (grade -1); +\/-2.5V (grade -2) Input Overvoltage […]<\/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":[165],"class_list":["post-6966","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"8-CH 12-bit 500kSPS ADC, +\/-10Vin, MQFP-44","date_code":"","package_case":"MQFP-44 (10.0 x 10.0 x 1.5 mm, 0.8mm pitch)","in_stock":1234,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/AD7891.pdf","price":"$12.50 @ 1ku","product_introduction":"The AD7891YSZ-1 from Analog Devices is a complete 8-channel 12-bit data acquisition system in a 44-pin MQFP package. The -1 suffix indicates the +\/-10V analog input range version (-2 provides +\/-2.5V range). The device integrates an 8-channel multiplexer, high-impedance input buffer, track-and-hold amplifier, 12-bit successive approximation ADC, internal +2.5V reference, and flexible parallel\/serial interface on a single chip. The 500kSPS throughput rate is shared across all 8 channels, providing 62.5kSPS per channel when all channels are scanned sequentially. The +\/-10V input range accommodates standard industrial signal levels without external signal conditioning. The +\/-17V input overvoltage protection allows the inputs to withstand fault conditions without damage. The dual interface supports both parallel (8-bit or 12-bit bus width) and serial (SPI-compatible with frame sync) data transfer, providing flexibility for different processor architectures. The 70mW typical power dissipation makes the device suitable for multi-channel data acquisition systems with moderate power budgets. The Y suffix indicates the industrial temperature range (-40C to +85C), S denotes the MQFP-44 package.","working_principle":"The AD7891YSZ-1 operates as a complete data acquisition front-end. The analog input channels (VIN0-VIN7) connect to an 8-channel analog multiplexer controlled by a 3-bit channel address register. The selected channel feeds a high-impedance input buffer (typically 100MOhm input impedance) that minimizes loading on the source. The buffer output drives the track-and-hold amplifier, which captures the input voltage at the start of a conversion. The track-and-hold enters hold mode, and the 12-bit successive approximation register (SAR) ADC begins conversion. The SAR ADC uses a capacitive DAC and a high-speed comparator to determine each bit from MSB to LSB: the DAC output is compared with the held input voltage, and each bit is resolved in one clock cycle (12 cycles total). The 1.68us conversion time plus 0.32us acquisition time yields the 500kSPS throughput. The +\/-10V input range is accommodated by an internal resistor divider that scales the input to the +\/-5V range of the ADC core. The internal +2.5V reference provides the ADC reference voltage, or an external reference can be applied via the VREF pin for higher accuracy. The parallel interface provides 12-bit data in one read cycle (12-bit bus) or two read cycles (8-bit bus), while the serial interface shifts out data MSB-first compatible with SPI peripherals.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      Analog<\/td>VIN0-VIN7<\/td>Input<\/td>8 analog input channels (+\/-10V)<\/td><\/tr>
      Analog<\/td>VREF<\/td>I\/O<\/td>Internal\/external reference (+2.5V)<\/td><\/tr>
      Analog<\/td>AGND<\/td>Power<\/td>Analog ground<\/td><\/tr>
      Analog<\/td>AVDD<\/td>Power<\/td>+5V analog supply<\/td><\/tr>
      Digital<\/td>DB0-DB11<\/td>I\/O<\/td>Parallel data bus (12-bit)<\/td><\/tr>
      Digital<\/td>A0-A2<\/td>Input<\/td>Channel address select<\/td><\/tr>
      Digital<\/td>CONVST<\/td>Input<\/td>Conversion start<\/td><\/tr>
      Digital<\/td>RD, WR, CS<\/td>Input<\/td>Parallel interface control<\/td><\/tr>
      Digital<\/td>MODE<\/td>Input<\/td>Interface mode (parallel\/serial)<\/td><\/tr>
      Digital<\/td>SDATA, SCLK, FS<\/td>I\/O<\/td>Serial interface (SPI)<\/td><\/tr>
      Digital<\/td>EOC<\/td>Output<\/td>End of conversion status<\/td><\/tr>
      Digital<\/td>DGND, DVDD<\/td>Power<\/td>Digital ground and +5V supply<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial 8-channel +\/-10V process variable monitoring at 500kSPS with parallel interface to FPGA for real-time control<\/li>
      • Automotive test bench 8-channel data acquisition with +\/-17V overvoltage protection and SPI serial interface to MCU<\/li>
      • Multi-channel vibration monitoring with 12-bit resolution and 62.5kSPS per channel sequential scanning<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ADI<\/td>AD7891YSZ-2<\/td>MQFP-44<\/td>+\/-2.5V input range version<\/td><\/tr>
        ADI<\/td>AD7890ARUZ-2<\/td>TSSOP-28<\/td>8-channel, serial only, smaller pkg<\/td><\/tr>
        TI<\/td>ADS7844E<\/td>TQFP-48<\/td>8-channel, 12-bit, 200kSPS<\/td><\/tr>
        Maxim<\/td>MAX1304ECM<\/td>TQFP-48<\/td>8-channel, 12-bit, 500kSPS<\/td><\/tr>
        ADI<\/td>AD7606BSTZ-4<\/td>LQFP-64<\/td>6-channel, 16-bit, simultaneous sampling<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6966"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6966\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6966"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6966"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}