{"id":3695,"date":"2026-06-08T02:02:22","date_gmt":"2026-06-08T02:02:22","guid":{"rendered":"https:\/\/materialparts.com\/adr444brz-reel7\/"},"modified":"2026-06-08T02:02:22","modified_gmt":"2026-06-08T02:02:22","slug":"adr444brz-reel7","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/adr444brz-reel7\/","title":{"rendered":"ADR444BRZ-REEL7"},"content":{"rendered":"

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

The ADR444BRZ-REEL7 from Analog Devices is an ultra-low noise, 4.096V LDO XFET voltage reference with 3ppm\/C temperature coefficient and +\/-0.04% initial accuracy. It features source and sink current capability in an 8-pin SOIC package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n4.096V<\/td>\n<\/tr>\n
Initial Accuracy<\/td>\n+\/-1.6mV (+\/-0.04%)<\/td>\n<\/tr>\n
Temperature Coefficient<\/td>\n3ppm\/C (B Grade)<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n4.6V to 18V<\/td>\n<\/tr>\n
Output Noise (0.1-10Hz)<\/td>\n1.8uV p-p<\/td>\n<\/tr>\n
Source Current<\/td>\n+10mA<\/td>\n<\/tr>\n
Sink Current<\/td>\n-5mA<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to 125 C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Ultralow noise: 1.8uV p-p (0.1Hz to 10Hz)<\/li>\n
  • Excellent temperature coefficient: 3ppm\/C<\/li>\n
  • Low dropout operation: 500mV headroom<\/li>\n
  • High source and sink current: +10mA\/-5mA<\/li>\n
  • Output voltage trim capability (0.5% range)<\/li>\n
  • Long-term stability: 30ppm\/1000 hours typical<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Precision data acquisition systems<\/li>\n
    • High-resolution ADC\/DAC reference<\/li>\n
    • Battery-powered instrumentation<\/li>\n
    • Medical instruments<\/li>\n
    • Optical control circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ADR444BRZ-REEL7 from Analog Devices is an ultra-low noise, 4.096V LDO XFET voltage reference with 3ppm\/C temperature coefficient and +\/-0.04% initial accuracy. It features source and sink current capability in an 8-pin SOIC package. Key Specifications Output Voltage 4.096V Initial Accuracy +\/-1.6mV (+\/-0.04%) Temperature Coefficient 3ppm\/C (B Grade) Input Voltage Range 4.6V to […]<\/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":[165],"class_list":["post-3695","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"4.096V XFET voltage reference, 3ppm\/C, 1.8uV p-p noise, +\/-0.04%, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 x 1.45 mm)","in_stock":8398,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/ADR440_441_443_444_445.pdf","price":"$7.34 @ 1ku","product_introduction":"The ADR444BRZ-REEL7 from Analog Devices is a high-precision, ultralow noise XFET voltage reference providing a fixed 4.096V output. Using Analog Devices patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, the device achieves an outstanding temperature coefficient of 3ppm\/C (B grade) with ultralow noise of 1.8uV p-p from 0.1Hz to 10Hz. The initial accuracy of +\/-0.04% (+\/-1.6mV) makes it suitable for precision measurement systems. The XFET architecture operates with only 500mV of supply headroom, significantly lower than buried Zener references, and provides better noise performance. The device can source up to 10mA and sink up to 5mA, eliminating the need for external buffer amplifiers in many applications. A trim terminal allows 0.5% output voltage adjustment without degrading performance. The ADR444BRZ is available in an 8-pin narrow SOIC package rated for -40 to 125 C operation.","working_principle":"The ADR444BRZ-REEL7 uses the XFET (eXtra implanted junction FET) voltage reference architecture. Key subsystems include: (1) XFET Reference Core - two junction FETs with different implant doses operate at the same drain current; the difference in their gate-source voltages produces a stable reference voltage that is inherently low-noise; (2) Curvature Correction - Analog Devices patented temperature drift curvature correction circuit compensates for residual nonlinearity, achieving 3ppm\/C stability; (3) Output Buffer - a low-noise precision amplifier provides high output current capability (10mA source, 5mA sink) with low output impedance; (4) Trim Network - allows external resistor adjustment of the output voltage by +\/-0.5% without affecting stability; (5) LDO Regulator - the device operates with only 500mV of headroom enabled by the low-voltage XFET architecture.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>TP1<\/td>Test<\/td>Test point (do not connect)<\/td><\/tr>
      2<\/td>VIN<\/td>Power<\/td>Input supply voltage (4.6V to 18V)<\/td><\/tr>
      3<\/td>NC<\/td>Unused<\/td>No connect<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td>Ground connection<\/td><\/tr>
      5<\/td>TRIM<\/td>Input<\/td>Output voltage trim adjustment<\/td><\/tr>
      6<\/td>VOUT<\/td>Output<\/td>Reference voltage output (4.096V)<\/td><\/tr>
      7<\/td>NC<\/td>Unused<\/td>No connect<\/td><\/tr>
      8<\/td>TP2<\/td>Test<\/td>Test point (do not connect)<\/td><\/tr><\/table>","application_scenarios":"
      • Precision data acquisition and measurement system voltage references<\/li>
      • High-resolution ADC and DAC reference inputs<\/li>
      • Battery-powered precision instrumentation<\/li>
      • Medical device calibration and measurement circuits<\/li>
      • Industrial process control and optical systems<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Analog Devices<\/td>ADR444ARZ-REEL7<\/td>SOIC-8<\/td>A grade, 10ppm\/C<\/td><\/tr>
        Texas Instruments<\/td>REF5040IDR<\/td>SOIC-8<\/td>4.096V, 3ppm\/C<\/td><\/tr>
        Maxim Integrated<\/td>MAX6341ESA+<\/td>SOIC-8<\/td>4.096V, 1ppm\/C<\/td><\/tr>
        Microchip<\/td>MCP1541T-I\/SN<\/td>SOT-23-3<\/td>4.096V, 50ppm\/C<\/td><\/tr>
        Linear Tech<\/td>LT1461DCS8-4.096<\/td>SOIC-8<\/td>4.096V, 3ppm\/C<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3695","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=3695"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3695\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3695"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}