{"id":6739,"date":"2026-06-21T10:13:05","date_gmt":"2026-06-21T10:13:05","guid":{"rendered":"https:\/\/materialparts.com\/lm567cmx\/"},"modified":"2026-06-21T10:13:05","modified_gmt":"2026-06-21T10:13:05","slug":"lm567cmx","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm567cmx\/","title":{"rendered":"LM567CMX"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The LM567CMX from Texas Instruments is a general-purpose tone decoder PLL designed to detect a specific frequency tone within a 20:1 frequency range. It features a logic-compatible output capable of sinking 100 mA, adjustable bandwidth from 0 to 14%, and high out-of-band signal rejection. The device operates from 4.75 V to 9 V supply in an 8-pin VSSOP package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0646\u0648\u0639<\/td>\nTone Decoder \/ Phase-Locked Loop<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n4.75 V to 9 V<\/td>\n<\/tr>\n
Frequency Range<\/td>\n0.01 Hz to 500 kHz<\/td>\n<\/tr>\n
Frequency Ratio Range<\/td>\n20:1<\/td>\n<\/tr>\n
Output Sink Current<\/td>\n100 mA<\/td>\n<\/tr>\n
Bandwidth<\/td>\n0 to 14% (adjustable)<\/td>\n<\/tr>\n
Input Sensitivity<\/td>\n20 mV rms (typical)<\/td>\n<\/tr>\n
Supply Current<\/td>\n8 mA (typical)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nVSSOP-8 (3.0 x 3.0 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n0\u00b0C to 70\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 20 to 1 frequency range with a single external resistor<\/li>\n
  • Logic-compatible output with 100 mA current sinking capability<\/li>\n
  • Bandwidth adjustable from 0 to 14%<\/li>\n
  • High rejection of out-of-band signals and noise<\/li>\n
  • Immunity to false signals<\/li>\n
  • Inherent immunity to AM signals<\/li>\n
  • Simultaneous tone and frequency decoding<\/li>\n
  • Adjustable reference voltage for quadrature detector<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Touch-tone decoding and DTMF detection<\/li>\n
    • Carrier current remote control<\/li>\n
    • Frequency monitoring and detection<\/li>\n
    • Ultrasonic remote control systems<\/li>\n
    • Communications tone signaling<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM567CMX from Texas Instruments is a general-purpose tone decoder PLL designed to detect a specific frequency tone within a 20:1 frequency range. It features a logic-compatible output capable of sinking 100 mA, adjustable bandwidth from 0 to 14%, and high out-of-band signal rejection. The device operates from 4.75 V to 9 V […]<\/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":[13],"tags":[],"chip_brand":[138],"class_list":["post-6739","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Tone Decoder PLL, 0.01Hz-500kHz, 100mA output sink, VSSOP-8","date_code":"","package_case":"VSSOP-8 (3.0 x 3.0 x 1.0 mm)","in_stock":8674,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/snosbq4d\/snosbq4d.pdf","price":"$0.62 @ 1ku","product_introduction":"The LM567CMX from Texas Instruments is a general-purpose tone decoder that uses a phase-locked loop (PLL) architecture to detect a specific frequency tone. It can detect tones from 0.01 Hz to 500 kHz with a 20:1 frequency range using a single external resistor. The output is a logic-compatible open-collector transistor capable of sinking 100 mA. Bandwidth is adjustable from 0 to 14% of the center frequency via an external capacitor. The device provides high out-of-band signal rejection and immunity to false triggering, making it ideal for tone signaling and frequency detection in communication and control systems.","working_principle":"The LM567CMX uses a phase-locked loop (PLL) architecture consisting of a voltage-controlled oscillator (VCO), a phase detector, an amplifier, and an output driver. The VCO center frequency is set by external timing resistor (R1) and capacitor (C1) according to f0 = 1\/(1.1 x R1 x C1). When an input signal at or near the VCO frequency is applied, the PLL locks and the output transistor turns on (sinks current). The loop filter capacitor (C2) at pin 2 determines the detection bandwidth. With input signals below 200 mV rms, bandwidth is calculated from the C2 value and input amplitude. Above 200 mV rms, bandwidth depends on the product of f0 and C2. The output at pin 8 is an open-collector NPN transistor that sinks up to 100 mA when a valid tone is detected.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Output Filter (C3)<\/td>I\/O<\/td>Output filter capacitor<\/td><\/tr>
      2<\/td>Loop Filter (C2)<\/td>I\/O<\/td>Loop filter \/ bandwidth control<\/td><\/tr>
      3<\/td>Input<\/td>Input<\/td>Signal input<\/td><\/tr>
      4<\/td>VCC<\/td>Power<\/td>Power supply (4.75-9V)<\/td><\/tr>
      5<\/td>Timing (R1)<\/td>I\/O<\/td>VCO timing resistor<\/td><\/tr>
      6<\/td>Timing (C1)<\/td>I\/O<\/td>VCO timing capacitor<\/td><\/tr>
      7<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      8<\/td>Output<\/td>Output<\/td>Detection output (open collector, 100mA sink)<\/td><\/tr><\/table>","application_scenarios":"
      • DTMF and touch-tone telephone decoding<\/li>
      • Carrier current and power-line remote control receivers<\/li>
      • Frequency monitoring and alarm systems<\/li>
      • Ultrasonic and acoustic signaling detection<\/li>
      • FSK and tone-based data communication<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Texas Instruments<\/td>LM567CN<\/td>DIP-8<\/td>Through-hole version<\/td><\/tr>
        Texas Instruments<\/td>LMC567CM<\/td>SOIC-8<\/td>CMOS low-power version<\/td><\/tr>
        onsemi<\/td>NE567N<\/td>DIP-8<\/td>Pin-compatible tone decoder<\/td><\/tr>
        NXP<\/td>74HC946<\/td>SOIC-16<\/td>PLL tone decoder, different pinout<\/td><\/tr>
        Microchip<\/td>MCP2030<\/td>QFN-20<\/td>Analog front-end for LF receivers<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6739"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6739\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6739"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6739"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}