{"id":3202,"date":"2026-05-31T03:44:37","date_gmt":"2026-05-31T03:44:37","guid":{"rendered":"https:\/\/materialparts.com\/lm321mf-nopb\/"},"modified":"2026-06-06T03:28:44","modified_gmt":"2026-06-06T03:28:44","slug":"lm321mf-nopb","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm321mf-nopb\/","title":{"rendered":"LM321MF\/NOPB"},"content":{"rendered":"

Productos<\/h2>\n

The LM321MF\/NOPB from Texas Instruments is a low-power single operational amplifier in a 5-pin SOT-23 package. As the single version of the popular LM324, it features a 1 MHz gain-bandwidth product, 430 uA supply current, and a wide supply voltage range of 3 V to 32 V. The input common-mode range includes ground, enabling true single-supply operation.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
N\u00famero de canales<\/td>\n1 (Single)<\/td>\n<\/tr>\n
Producto ganancia-ancho de banda<\/td>\n1 MHz<\/td>\n<\/tr>\n
Velocidad de giro<\/td>\n0.4 V\/us<\/td>\n<\/tr>\n
Supply Voltage Range<\/td>\n3 V to 32 V<\/td>\n<\/tr>\n
Supply Current<\/td>\n430 uA typical<\/td>\n<\/tr>\n
Corriente de polarizaci\u00f3n de entrada<\/td>\n45 nA typical<\/td>\n<\/tr>\n
Tensi\u00f3n de offset de entrada<\/td>\n7 mV max<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to 85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Single version of the industry-standard LM324<\/li>\n
  • Wide supply voltage range: 3 V to 32 V (single) or +\/-1.5 V to +\/-15 V (dual)<\/li>\n
  • Input common-mode voltage range includes ground<\/li>\n
  • Stable with high capacitive loads<\/li>\n
  • Low supply current: 430 uA typical at 5 V<\/li>\n
  • Compact SOT-23-5 surface-mount package<\/li>\n
  • Pb-free (NOPB) variant with matte tin finish<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Battery-powered instruments and portable devices<\/li>\n
    • Chargers and power supply regulation loops<\/li>\n
    • Industrial controls and instrumentation<\/li>\n
    • Desktop and communications infrastructure<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM321MF\/NOPB from Texas Instruments is a low-power single operational amplifier in a 5-pin SOT-23 package. As the single version of the popular LM324, it features a 1 MHz gain-bandwidth product, 430 uA supply current, and a wide supply voltage range of 3 V to 32 V. The input common-mode range includes ground, […]<\/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":[138],"class_list":["post-3202","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Low-power single op-amp, 1 MHz GBW, 3-32 V, SOT-23-5, single version of LM324","date_code":"","package_case":"SOT-23-5 (2.90 x 1.60 x 1.45 mm)","in_stock":8900,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm321.pdf","price":"$0.38 @ 1ku","product_introduction":"The LM321MF\/NOPB is a low-power single operational amplifier from Texas Instruments, designed as the single-channel counterpart of the widely-used LM324 quad op-amp. Housed in a compact 5-pin SOT-23 package, it delivers a gain-bandwidth product of 1 MHz with a typical supply current of only 430 uA at 5 V. The device operates over a wide supply range from 3 V to 32 V in single-supply mode or +\/-1.5 V to +\/-15 V in dual-supply mode, providing flexibility for diverse application requirements. A key feature is the input common-mode voltage range that includes ground, enabling the LM321 to operate in true single-supply applications without requiring a negative supply. The device is also stable with high capacitive loads, making it suitable for driving cable or filter circuits without additional compensation. The NOPB suffix indicates a Pb-free terminal finish compliant with RoHS requirements.","working_principle":"The LM321MF\/NOPB operates as a voltage-feedback operational amplifier with three key circuit blocks: (1) The differential input stage uses bipolar transistors to amplify the voltage difference between the inverting and non-inverting inputs. The input bias current of 45 nA typical is low enough for most general-purpose applications, and the common-mode range includes ground for single-supply operation. (2) The gain stage provides the primary voltage amplification with internal frequency compensation that ensures stability in unity-gain configurations without external capacitors. The 1 MHz gain-bandwidth product and 0.4 V\/us slew rate are optimized for low-frequency signal processing applications. (3) The output stage is a Class AB push-pull amplifier capable of driving moderate resistive loads and high capacitive loads without oscillation. The output can swing close to ground in single-supply operation, and the 430 uA quiescent current makes the device suitable for battery-powered systems.","pin_description":"
      Pin No.<\/td>Pin Name<\/td>Function<\/td><\/tr>
      1<\/td>OUT<\/td>Amplifier output<\/td><\/tr>
      2<\/td>V-<\/td>Negative supply \/ ground<\/td><\/tr>
      3<\/td>IN+<\/td>Non-inverting input<\/td><\/tr>
      4<\/td>IN-<\/td>Inverting input<\/td><\/tr>
      5<\/td>V+<\/td>Positive supply (3 V to 32 V)<\/td><\/tr><\/table>","application_scenarios":"
      • Battery-powered sensor signal conditioning where low quiescent current (430 uA) extends operating life<\/li>
      • Single-supply signal processing with ground-referenced inputs leveraging the common-mode range that includes ground<\/li>
      • Charger and power supply feedback loops requiring a compact single op-amp in SOT-23 footprint<\/li>
      • Industrial control circuits needing capacitive load stability for driving long cables or filter networks<\/li><\/ul>","alternative_models":"
        Model<\/td>Brand<\/td>GBW<\/td>Supply Range<\/td>Package<\/td><\/tr>
        LM321MFX\/NOPB<\/td>TI<\/td>1 MHz<\/td>3-32 V<\/td>SOT-23-5 (T&R)<\/td><\/tr>
        MCP6001T-I\/SN<\/td>Microchip<\/td>1 MHz<\/td>1.8-6 V<\/td>SOT-23-5<\/td><\/tr>
        LMV321IDBVR<\/td>TI<\/td>1 MHz<\/td>2.7-5.5 V<\/td>SOT-23-5<\/td><\/tr>
        TSU104IYLT<\/td>ST<\/td>0.9 MHz<\/td>1.8-5.5 V<\/td>SOT-23-5<\/td><\/tr>
        NCV321SN3T1G<\/td>onsemi<\/td>1 MHz<\/td>3-32 V<\/td>SOT-23-5<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3202","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3202"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3202\/revisions"}],"predecessor-version":[{"id":3283,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3202\/revisions\/3283"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3202"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}