{"id":2959,"date":"2026-05-28T15:23:53","date_gmt":"2026-05-28T15:23:53","guid":{"rendered":"https:\/\/materialparts.com\/mcp4921-e-sn\/"},"modified":"2026-05-28T15:23:53","modified_gmt":"2026-05-28T15:23:53","slug":"mcp4921-e-sn","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mcp4921-e-sn\/","title":{"rendered":"MCP4921-E\/SN"},"content":{"rendered":"

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

The MCP4921-E\/SN from Microchip Technology is a 12-Bit Single Output Voltage DAC with SPI interface in an 8-pin SOIC package. It features rail-to-rail output, external voltage reference, and selectable unity or 2x gain output, operating from 2.7V to 5.5V with very low power consumption.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Resolution<\/td>\n12 Bit<\/td>\n<\/tr>\n
\u6e20\u9053<\/td>\n1<\/td>\n<\/tr>\n
\u8f93\u51fa\u7c7b\u578b<\/td>\nVoltage, Rail-to-Rail<\/td>\n<\/tr>\n
Settling Time<\/td>\n4.5 \u03bcs<\/td>\n<\/tr>\n
INL<\/td>\n\u00b12 LSB typ<\/td>\n<\/tr>\n
DNL<\/td>\n\u00b10.75 LSB max<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.7 V to 5.5 V<\/td>\n<\/tr>\n
Operating Current<\/td>\n175 \u03bcA typ<\/td>\n<\/tr>\n
Interface<\/td>\nSPI (20 MHz)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-8<\/td>\n<\/tr>\n
Temperature Range<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 12-bit resolution with \u00b10.2 LSB DNL (typical)<\/li>\n
  • Rail-to-rail output with selectable unity or 2x gain<\/li>\n
  • SPI interface supporting 20 MHz clock<\/li>\n
  • External voltage reference input with multiplier mode<\/li>\n
  • Double-buffered input registers with LDAC for synchronous update<\/li>\n
  • Very low power consumption: 175 \u03bcA typical<\/li>\n
  • AEC-Q100 Grade 1 qualified for automotive<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Set point or offset trimming<\/li>\n
    • Sensor calibration and compensation<\/li>\n
    • Motor control feedback loops<\/li>\n
    • Portable battery-powered instruments<\/li>\n
    • Digitally-controlled multiplier\/divider<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MCP4921-E\/SN from Microchip Technology is a 12-Bit Single Output Voltage DAC with SPI interface in an 8-pin SOIC package. It features rail-to-rail output, external voltage reference, and selectable unity or 2x gain output, operating from 2.7V to 5.5V with very low power consumption. Key Specifications Resolution 12 Bit Channels 1 Output Type […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[134],"class_list":["post-2959","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-channel voltage DAC, SPI, rail-to-rail output, 2.7-5.5V, SOIC-8, AEC-Q100","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 mm)","in_stock":2849,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/22248A.pdf","price":".91 @ 1ku","product_introduction":"The MCP4921-E\/SN is a single channel 12-bit buffered voltage output Digital-to-Analog Converter (DAC) from Microchip Technology. It uses an external voltage reference pin and SPI interface. The device provides high accuracy and low noise performance suitable for consumer and industrial applications. The resistive string architecture ensures low DNL error and fast settling time. Double-buffered input registers allow synchronous updates using the LDAC pin. The device is AEC-Q100 Grade 1 qualified, making it suitable for automotive applications.","working_principle":"The MCP4921-E\/SN uses a resistive string DAC architecture where the 12-bit digital input code selects a tap point on a resistor divider chain between VREF and ground. The selected voltage is buffered by a rail-to-rail output amplifier with selectable gain of 1x or 2x. Data is written via SPI interface with a 16-bit command word containing configuration bits (gain selection, shutdown control) and the 12-bit DAC code. The LDAC pin allows double-buffered operation for synchronous output updates. An on-chip Power-On Reset (POR) circuit ensures the DAC output starts at a known state.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>Positive supply voltage (2.7V to 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 input<\/td><\/tr>
      4<\/td>SDI<\/td>Input<\/td>SPI serial data input<\/td><\/tr>
      5<\/td>LDAC<\/td>Input<\/td>Latch DAC input (active low, synchronous update)<\/td><\/tr>
      6<\/td>VREF<\/td>Input<\/td>External voltage reference input<\/td><\/tr>
      7<\/td>VSS<\/td>Ground<\/td>Ground<\/td><\/tr>
      8<\/td>VOUT<\/td>Output<\/td>DAC analog voltage output<\/td><\/tr><\/table>","application_scenarios":"
      • Sensor calibration and signal compensation<\/li>
      • Set point or offset trimming in control loops<\/li>
      • Motor control feedback and voltage adjustment<\/li>
      • Portable and battery-powered instrumentation<\/li>
      • Optical communication device calibration<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>MCP4922-E\/SN<\/td>SOIC-14<\/td>Dual channel 12-bit DAC<\/td><\/tr>
        Microchip<\/td>MCP4911-E\/SN<\/td>SOIC-8<\/td>10-bit version, same footprint<\/td><\/tr>
        Microchip<\/td>MCP4821-E\/SN<\/td>SOIC-8<\/td>12-bit with internal 2.048V reference<\/td><\/tr>
        Texas Instruments<\/td>DAC8562<\/td>VSSOP-10<\/td>12-bit dual DAC with internal ref<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2959","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=2959"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2959\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2959"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}