{"id":7565,"date":"2026-06-26T04:33:17","date_gmt":"2026-06-26T04:33:17","guid":{"rendered":"https:\/\/materialparts.com\/ad694jnz\/"},"modified":"2026-06-26T04:33:17","modified_gmt":"2026-06-26T04:33:17","slug":"ad694jnz","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ad694jnz\/","title":{"rendered":"AD694JNZ"},"content":{"rendered":"

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

The AD694JNZ from Analog Devices is a precision 4-20mA current loop transmitter with voltage input, on-chip 2V\/10V reference, and 0-20mA or 4-20mA output range in 16-pin DIP package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Output Range<\/td>\n4-20mA or 0-20mA (selectable)<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n0-2V or 0-10V (selectable)<\/td>\n<\/tr>\n
Supply Voltage (Loop)<\/td>\n4.5V to 36V<\/td>\n<\/tr>\n
On-Chip Reference<\/td>\n2V or 10V (selectable)<\/td>\n<\/tr>\n
Span Error<\/td>\n+\/-0.02% typical<\/td>\n<\/tr>\n
Nonlinearity<\/td>\n+\/-0.002% typical<\/td>\n<\/tr>\n
Output Impedance<\/td>\n40 MOhm typical<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n1.5 mA typical<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n16-DIP (JNZ suffix)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • Voltage input 4-20mA transmitter with selectable ranges<\/li>\n
  • +\/-0.002% ultra-low nonlinearity<\/li>\n
  • On-chip 2V and 10V precision references<\/li>\n
  • 4-20mA or 0-20mA output range selectable<\/li>\n
  • 0-2V or 0-10V input range selectable<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial process control 4-20mA transmitter<\/li>\n
    • PLC analog output module<\/li>\n
    • Pressure and flow sensor transmitter<\/li>\n
    • Temperature transmitter signal conditioning<\/li>\n
    • Loop-powered industrial sensor interface<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AD694JNZ from Analog Devices is a precision 4-20mA current loop transmitter with voltage input, on-chip 2V\/10V reference, and 0-20mA or 4-20mA output range in 16-pin DIP package. Key Specifications Output Range 4-20mA or 0-20mA (selectable) Input Voltage Range 0-2V or 0-10V (selectable) Supply Voltage (Loop) 4.5V to 36V On-Chip Reference 2V or […]<\/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-7565","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"4-20mA voltage-input transmitter, 2V\/10V ref, DIP-16","date_code":"","package_case":"16-DIP (19.3 x 6.35 x 5.08 mm)","in_stock":890,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/AD694.pdf","price":"$12.50 @ 1ku","product_introduction":"The AD694JNZ from Analog Devices is a precision monolithic 4-20mA current loop transmitter that accepts voltage inputs and provides a proportional 4-20mA or 0-20mA output current. The device features selectable input ranges (0-2V or 0-10V) and output ranges (4-20mA or 0-20mA), with on-chip 2V and 10V precision references for sensor excitation. The +\/-0.002% nonlinearity and +\/-0.02% span error provide exceptional accuracy for industrial process control. The 40MOhm output impedance ensures the loop current is independent of loop resistance. The JNZ suffix denotes 16-pin DIP package with industrial temperature range.","working_principle":"The AD694JNZ operates as a voltage-input 4-20mA current loop transmitter. (1) The input buffer amplifier accepts 0-2V or 0-10V voltage signals (selectable via pin strapping). The buffered voltage is converted to a proportional current by the V\/I converter. For the 0-2V input range, a 2V input produces 20mA output; for the 0-10V range, a 10V input produces 20mA output. The 4mA offset for the 4-20mA range is generated internally. (2) The on-chip precision reference provides 2V or 10V outputs for sensor excitation or DAC reference. The 2V reference is used for the 0-2V input range, while the 10V reference is used for the 0-10V input range. The reference accuracy directly affects the transmitter span accuracy. (3) The output stage regulates the loop current through an external pass transistor (or the internal transistor for lower currents). The 40MOhm output impedance ensures the loop current remains constant regardless of loop resistance variations, as long as the loop voltage stays above 4.5V. The 1.5mA quiescent current is added to the signal current, establishing the 4mA live-zero in 4-20mA mode.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>FB<\/td>Feedback (input buffer output)<\/td><\/tr>
      2<\/td>-SIG<\/td>Inverting signal input<\/td><\/tr>
      3<\/td>+SIG<\/td>Non-inverting signal input<\/td><\/tr>
      4<\/td>2V FS<\/td>2V full-scale select<\/td><\/tr>
      5<\/td>COM<\/td>Common (signal ground)<\/td><\/tr>
      6<\/td>2V REF<\/td>2V reference output<\/td><\/tr>
      7<\/td>10V REF<\/td>10V reference output<\/td><\/tr>
      8<\/td>BW ADJ<\/td>Bandwidth adjust<\/td><\/tr>
      9<\/td>VOS ADJ<\/td>Offset adjust<\/td><\/tr>
      10<\/td>4-20mA<\/td>4-20mA mode select<\/td><\/tr>
      11<\/td>ALARM<\/td>Alarm output (open collector)<\/td><\/tr>
      12<\/td>IOUT<\/td>Current output<\/td><\/tr>
      13<\/td>BOOST<\/td>External transistor drive<\/td><\/tr>
      14<\/td>VLOOP<\/td>Loop voltage sense<\/td><\/tr>
      15<\/td>GND<\/td>Ground<\/td><\/tr>
      16<\/td>VCC<\/td>Supply voltage (4.5-36V)<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial process control 4-20mA transmitter with voltage input<\/li>
      • PLC analog output module with 0-10V to 4-20mA conversion<\/li>
      • Pressure and flow sensor transmitter with on-chip reference<\/li>
      • Temperature transmitter signal conditioning with +\/-0.002% linearity<\/li>
      • Loop-powered industrial sensor interface with alarm output<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        XTR115UA\/2K5<\/td>TI<\/td>Current input, 5V reg, SOIC-8<\/td><\/tr>
        XTR116UA\/2K5<\/td>TI<\/td>Current input, 4.096V ref, SOIC-8<\/td><\/tr>
        XTR111AIDGQR<\/td>TI<\/td>0-20mA, voltage input, QFN<\/td><\/tr>
        AD5421BCPZ-RL7<\/td>ADI<\/td>16-bit DAC, 4-20mA, LFCSP<\/td><\/tr>
        MAX12900ATJ+<\/td>ADI<\/td>12-bit DAC, 4-20mA, TSSOP<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7565","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=7565"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7565\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7565"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}