{"id":6792,"date":"2026-06-21T12:24:49","date_gmt":"2026-06-21T12:24:49","guid":{"rendered":"https:\/\/materialparts.com\/mcp4821-e-sn\/"},"modified":"2026-06-21T12:24:49","modified_gmt":"2026-06-21T12:24:49","slug":"mcp4821-e-sn","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/mcp4821-e-sn\/","title":{"rendered":"MCP4821-E\/SN"},"content":{"rendered":"

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

The MCP4821-E\/SN from Microchip Technology is a single-channel 12-bit voltage output DAC with internal 2.048V reference and SPI interface in an SOIC-8 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
\u0627\u0644\u0646\u0648\u0639<\/td>\n12-Bit Single Channel DAC with Internal VREF<\/td>\n<\/tr>\n
Resolution<\/td>\n12 bits<\/td>\n<\/tr>\n
\u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n1<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nSPI (20 MHz max)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.7 V to 5.5 V<\/td>\n<\/tr>\n
Internal VREF<\/td>\n2.048 V<\/td>\n<\/tr>\n
Output Gain<\/td>\n1x or 2x selectable<\/td>\n<\/tr>\n
Settling Time<\/td>\n4.5 us (typical)<\/td>\n<\/tr>\n
INL<\/td>\n+\/-2 LSB (typical)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +125C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 12-bit resolution with +\/-2 LSB INL<\/li>\n
  • Internal 2.048 V reference voltage<\/li>\n
  • Selectable 1x or 2x gain output<\/li>\n
  • SPI interface at 20 MHz<\/li>\n
  • 4.5 us settling time<\/li>\n
  • Shutdown mode for power saving<\/li>\n
  • AEC-Q100 Grade 1 qualified<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Sensor calibration and offset trimming<\/li>\n
    • Set point control in industrial systems<\/li>\n
    • Portable instrumentation<\/li>\n
    • Optical communication device calibration<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MCP4821-E\/SN from Microchip Technology is a single-channel 12-bit voltage output DAC with internal 2.048V reference and SPI interface in an SOIC-8 package. Key Specifications Type 12-Bit Single Channel DAC with Internal VREF Resolution 12 bits Channels 1 Interface SPI (20 MHz max) Supply Voltage 2.7 V to 5.5 V Internal VREF 2.048 […]<\/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":[134],"class_list":["post-6792","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"12-Bit Single DAC, Int 2.048V VREF, SPI 20MHz, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 x 1.5 mm)","in_stock":8432,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/22244B.pdf","price":"$2.30 @ 1ku","product_introduction":"The MCP4821-E\/SN from Microchip Technology is a single-channel 12-bit buffered voltage output DAC with an integrated 2.048 V bandgap reference and SPI interface. The device operates from 2.7 V to 5.5 V with a typical operating current of 330 uA. The internal 2.048 V reference enables output voltage ranges of 0-2.048 V (1x gain) or 0-4.096 V (2x gain). The SPI interface supports clock rates up to 20 MHz for fast data updates. The 4.5 us settling time and +\/-2 LSB typical INL provide high accuracy for precision control applications. A shutdown pin reduces power consumption to 0.32 uA for battery-powered designs.","working_principle":"The MCP4821-E\/SN uses a resistor-string DAC architecture where the 12-bit digital code selects a tap point on a precision resistor ladder connected between the internal 2.048 V reference and ground. The selected voltage is buffered by a rail-to-rail output amplifier with selectable gain (1x or 2x). Data is written via SPI: the master asserts CS low, clocks in a 16-bit command word (4 config bits + 12 data bits) on the SDI pin, then deasserts CS to latch the data. The LDAC pin allows synchronous output updates when used with dual-channel devices. The SHDN pin forces the device into shutdown mode where the output goes to high impedance. The internal bandgap reference is trimmed during production for +\/-2% accuracy across the temperature range.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>Supply voltage (2.7-5.5V)<\/td><\/tr>
      2<\/td>CS<\/td>Input<\/td>Chip select (active LOW)<\/td><\/tr>
      3<\/td>SCK<\/td>Input<\/td>SPI serial clock<\/td><\/tr>
      4<\/td>SDI<\/td>Input<\/td>SPI serial data input<\/td><\/tr>
      5<\/td>VSS<\/td>Ground<\/td>Ground<\/td><\/tr>
      6<\/td>SHDN<\/td>Input<\/td>Shutdown (active LOW)<\/td><\/tr>
      7<\/td>LDAC<\/td>Input<\/td>Load DAC (active LOW)<\/td><\/tr>
      8<\/td>VOUT<\/td>Output<\/td>Analog voltage output<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial sensor offset trimming and calibration<\/li>
      • Set point voltage reference for temperature controllers<\/li>
      • Portable instrument bias voltage generation from battery<\/li>
      • Optical module bias current control via transimpedance driver<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>MCP4822-E\/SN<\/td>SOIC-8<\/td>Dual-channel version<\/td><\/tr>
        Microchip<\/td>MCP4811-E\/SN<\/td>SOIC-8<\/td>10-bit, same family<\/td><\/tr>
        TI<\/td>DAC7571IDBVT<\/td>SOT-23-6<\/td>12-bit, I2C, smaller<\/td><\/tr>
        ADI<\/td>AD5620BRJZ-1<\/td>SOT-23-8<\/td>12-bit, int ref, SPI<\/td><\/tr>
        Renesas<\/td>ISL26102AVZ<\/td>TSSOP-14<\/td>12-bit, int ref, SPI<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6792","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=6792"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6792\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6792"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6792"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}