{"id":6811,"date":"2026-06-21T12:33:00","date_gmt":"2026-06-21T12:33:00","guid":{"rendered":"https:\/\/materialparts.com\/ad5422brez\/"},"modified":"2026-06-21T12:33:00","modified_gmt":"2026-06-21T12:33:00","slug":"ad5422brez","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ad5422brez\/","title":{"rendered":"AD5422BREZ"},"content":{"rendered":"

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

The AD5422BREZ from Analog Devices is a 16-bit 4-20 mA loop-powered current output and voltage output DAC with HART connectivity in an SOIC-24 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n16-Bit 4-20mA Current and Voltage Output DAC<\/td>\n<\/tr>\n
Resolution<\/td>\n16 bits<\/td>\n<\/tr>\n
Current Output Range<\/td>\n4-20 mA, 0-20 mA, 0-24 mA<\/td>\n<\/tr>\n
Voltage Output Range<\/td>\n0-5V, 0-10V, +\/-5V, +\/-10V<\/td>\n<\/tr>\n
Interface<\/td>\nSPI (30 MHz max)<\/td>\n<\/tr>\n
Current Output Accuracy<\/td>\n+\/-0.03% FSR (typical)<\/td>\n<\/tr>\n
Voltage Output Accuracy<\/td>\n+\/-0.03% FSR (typical)<\/td>\n<\/tr>\n
Output Noise<\/td>\n4.8 uA rms (4-20mA range)<\/td>\n<\/tr>\n
HART Compatibility<\/td>\nYes (FSK modem coupling)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-24 (wide)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 16-bit resolution with 0.03% FSR accuracy<\/li>\n
  • Programmable 4-20 mA, 0-20 mA, 0-24 mA current ranges<\/li>\n
  • Programmable +\/-10V, +\/-5V, 0-10V, 0-5V voltage ranges<\/li>\n
  • HART FSK signal coupling capability<\/li>\n
  • Internal 2.5V reference (5 ppm\/C drift)<\/td>\n
  • On-chip output fault protection<\/li>\n
  • Asynchronous clear to 4 mA (failsafe)<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • 4-20 mA industrial process control loops<\/li>\n
    • HART smart transmitter output stages<\/li>\n
    • PLC analog output modules<\/li>\n
    • Valve positioner and actuator control<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AD5422BREZ from Analog Devices is a 16-bit 4-20 mA loop-powered current output and voltage output DAC with HART connectivity in an SOIC-24 package. Key Specifications Type 16-Bit 4-20mA Current and Voltage Output DAC Resolution 16 bits Current Output Range 4-20 mA, 0-20 mA, 0-24 mA Voltage Output Range 0-5V, 0-10V, +\/-5V, +\/-10V […]<\/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-6811","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"16-Bit 4-20mA\/Voltage DAC, HART, 0.03% FSR, SOIC-24, Loop-Powered","date_code":"","package_case":"SOIC-24 Wide (15.4 x 7.5 x 2.35 mm)","in_stock":1234,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/AD5422.pdf","price":"$8.90 @ 1ku","product_introduction":"The AD5422BREZ from Analog Devices is a 16-bit DAC providing both current (4-20 mA, 0-20 mA, 0-24 mA) and voltage (+\/-10V, +\/-5V, 0-10V, 0-5V) outputs with +\/-0.03% FSR accuracy. The device integrates a precision 2.5 V bandgap reference with 5 ppm\/C drift, output driver, and fault protection circuitry. HART FSK signal coupling capability allows digital communication over the 4-20 mA current loop for smart transmitter applications. The SPI interface operates at up to 30 MHz. On-chip fault protection includes open-circuit, short-circuit, and overtemperature detection. The asynchronous CLEAR function forces the output to 4 mA for failsafe operation during system faults.","working_principle":"The AD5422BREZ uses a 16-bit R-2R DAC core followed by a precision output amplifier and driver stage. The digital code is written via SPI into the input register, then transferred to the DAC register for output update. In current output mode, the output amplifier drives a PNP pass transistor in a feedback loop that regulates loop current through an external sense resistor. The internal 2.5V reference feeds the DAC reference input. The HART modem couples FSK digital signals onto the 4-20 mA loop through the CAP pin, modulating the loop current by +\/-0.5 mA at 1200\/2200 Hz. In voltage output mode, the output amplifier provides the selected voltage range directly. Fault protection continuously monitors for open loop, short circuit, and overtemperature conditions, reporting status via the FAULT pin and SPI status register. The CLEAR pin asynchronously resets the output to 4 mA for safety.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CLEAR<\/td>Input<\/td>Asynchronous clear (active LOW)<\/td><\/tr>
      2<\/td>LATCH<\/td>Input<\/td>LDAC for simultaneous update<\/td><\/tr>
      3<\/td>SDO<\/td>Output<\/td>SPI data output<\/td><\/tr>
      4<\/td>SCLK<\/td>Input<\/td>SPI clock<\/td><\/tr>
      5<\/td>SDIN<\/td>Input<\/td>SPI data input<\/td><\/tr>
      6<\/td>SYNC<\/td>Input<\/td>SPI chip select (active LOW)<\/td><\/tr>
      7<\/td>FAULT<\/td>Output<\/td>Fault status output (active LOW)<\/td><\/tr>
      8-9<\/td>COMP<\/td>I\/O<\/td>Loop amplifier compensation<\/td><\/tr>
      10<\/td>Iout<\/td>Output<\/td>Current output<\/td><\/tr>
      11<\/td>Vout<\/td>Output<\/td>Voltage output<\/td><\/tr>
      12<\/td>CAP<\/td>I\/O<\/td>HART coupling capacitor<\/td><\/tr>
      13-14<\/td>AVDD\/AVSS<\/td>Power<\/td>Analog supplies<\/td><\/tr>
      15<\/td>REF<\/td>I\/O<\/td>Reference input\/output<\/td><\/tr>
      16-24<\/td>DVCC\/DGND<\/td>Power<\/td>Digital supplies<\/td><\/tr><\/table>","application_scenarios":"
      • HART smart transmitter 4-20mA output with digital overlay<\/li>
      • PLC analog output module providing 4-20mA and 0-10V<\/li>
      • Loop-powered field instrument with failsafe 4mA output<\/li>
      • Valve positioner with 4-20mA control and HART diagnostics<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ADI<\/td>AD5421BREZ<\/td>SOIC-24<\/td>16-bit, 4-20mA only, loop-powered<\/td><\/tr>
        TI<\/td>DAC8750IZAY<\/td>HTQFP-48<\/td>16-bit, 4-20mA, HART<\/td><\/tr>
        ADI<\/td>AD5748BCPZ<\/td>LFCSP-40<\/td>16-bit, 4-20mA, voltage, smaller<\/td><\/tr>
        TI<\/td>DAC161S997<\/td>TSSOP-24<\/td>16-bit, 4-20mA, loop-powered<\/td><\/tr>
        Maxim<\/td>DS4432U+<\/td>SOIC-8<\/td>8-bit, current DAC, simpler<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6811","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=6811"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6811\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6811"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6811"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6811"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6811"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}