{"id":2367,"date":"2026-09-02T01:01:32","date_gmt":"2026-09-01T18:01:32","guid":{"rendered":"https:\/\/yourapx.com\/?p=2367"},"modified":"2026-09-02T01:01:32","modified_gmt":"2026-09-01T18:01:32","slug":"ic-so-sanh-comparator","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=2367","title":{"rendered":"IC so s\u00e1nh Comparator l\u00e0 g\u00ec? K\u00fd hi\u1ec7u, c\u00e1ch m\u1eafc, c\u00e1ch \u0111o v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

1. IC so s\u00e1nh Comparator l\u00e0 g\u00ec v\u00e0 c\u00f3 vai tr\u00f2 g\u00ec?<\/h2>\n

IC so s\u00e1nh Comparator so s\u00e1nh hai \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o v\u00e0 chuy\u1ec3n \u0111\u1ea7u ra v\u1ec1 m\u1ed9t trong hai tr\u1ea1ng th\u00e1i logic. N\u00f3 kh\u00f4ng m\u1eb7c nhi\u00ean thay th\u1ebf \u0111\u01b0\u1ee3c op-amp. <\/p>\n

Ph\u1ea7n quan tr\u1ecdng nh\u1ea5t l\u00e0 x\u00e1c \u0111\u1ecbnh linh ki\u1ec7n n\u00e0y \u0111ang l\u00e0m nhi\u1ec7m v\u1ee5 g\u00ec trong kh\u1ed1i m\u1ea1ch tr\u01b0\u1edbc khi \u0111o ho\u1eb7c ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n

2. K\u00fd hi\u1ec7u IC so s\u00e1nh Comparator trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/h2>\n

K\u00fd hi\u1ec7u tam gi\u00e1c c\u00f3 \u0111\u1ea7u v\u00e0o kh\u00f4ng \u0111\u1ea3o (+), \u0111\u1ea7u v\u00e0o \u0111\u1ea3o (\u2212), \u0111\u1ea7u ra v\u00e0 c\u00e1c ch\u00e2n ngu\u1ed3n. S\u01a1 \u0111\u1ed3 ch\u00e2n, kh\u1ea3 n\u0103ng rail-to-rail v\u00e0 ki\u1ec3u \u0111\u1ea7u ra ph\u1ea3i l\u1ea5y t\u1eeb datasheet \u0111\u00fang m\u00e3.<\/p>\n

M\u1ea1ch t\u00edch h\u1ee3p th\u01b0\u1eddng mang m\u00e3 U ho\u1eb7c IC. Khi \u0111\u1ecdc s\u01a1 \u0111\u1ed3 ph\u1ea3i \u0111\u1ed1i chi\u1ebfu c\u1ea3 s\u1ed1 ch\u00e2n, t\u00ean ch\u00e2n v\u00e0 ngu\u1ed3n c\u1ea5p c\u1ee7a \u0111\u00fang m\u00e3 linh ki\u1ec7n.<\/p>\n

\"K\u00fd
K\u00fd hi\u1ec7u v\u00e0 quy \u01b0\u1edbc ch\u00e2n c\u1ee7a IC so s\u00e1nh Comparator trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/figcaption><\/figure>\n

3. C\u1ea5u t\u1ea1o, h\u00ecnh d\u1ea1ng v\u00e0 ki\u1ec3u \u0111\u00f3ng g\u00f3i<\/h2>\n

B\u00ean trong g\u1ed3m t\u1ea7ng v\u00e0o vi sai, c\u00e1c t\u1ea7ng khu\u1ebfch \u0111\u1ea1i\/\u0111\u1ecbnh thi\u00ean v\u00e0 t\u1ea7ng ra. \u0110i\u1ec7n \u00e1p common-mode, offset, b\u0103ng th\u00f4ng v\u00e0 kh\u1ea3 n\u0103ng l\u00e1i t\u1ea3i gi\u1edbi h\u1ea1n ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf.<\/p>\n

Nh\u1eefng ki\u1ec3u v\u1ecf v\u00e0 ki\u1ec3u l\u1eafp th\u01b0\u1eddng g\u1eb7p g\u1ed3m:<\/p>\n

    \n
  • DIP xuy\u00ean l\u1ed7<\/li>\n
  • SOIC\/TSSOP<\/li>\n
  • SOT-23<\/li>\n
  • QFN\/DFN<\/li>\n
  • Package nhi\u1ec1u k\u00eanh<\/li>\n<\/ul>\n
    \"IC
    \u1ea2nh th\u1ef1c t\u1ebf 1 c\u1ee7a IC so s\u00e1nh Comparator d\u00f9ng \u0111\u1ec3 nh\u1eadn bi\u1ebft h\u00ecnh d\u1ea1ng t\u1ed5ng th\u1ec3.<\/figcaption><\/figure>\n

    4. C\u00e1c ch\u1ee7ng lo\u1ea1i ph\u1ed5 bi\u1ebfn<\/h2>\n

    M\u1ed7i ch\u1ee7ng lo\u1ea1i c\u00f3 \u01b0u \u0111i\u1ec3m, gi\u1edbi h\u1ea1n v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng kh\u00e1c nhau; kh\u00f4ng n\u00ean thay l\u1eabn ch\u1ec9 v\u00ec c\u00f3 h\u00ecnh d\u1ea1ng g\u1ea7n gi\u1ed1ng.<\/p>\n

      \n
    • \u0110\u1ea7u ra open-collector\/open-drain<\/li>\n
    • \u0110\u1ea7u ra push-pull<\/li>\n
    • Comparator t\u1ed1c \u0111\u1ed9 cao<\/li>\n
    • Comparator c\u00f3 hysteresis<\/li>\n<\/ul>\n
      \"IC
      \u1ea2nh th\u1ef1c t\u1ebf 2 c\u1ee7a IC so s\u00e1nh Comparator d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

      5. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec3u<\/h2>\n
        \n
      • \u0110i\u1ec7n \u00e1p ngu\u1ed3n:<\/strong> l\u00e0 gi\u1edbi h\u1ea1n \u0111i\u1ec7n \u00e1p ph\u00f9 h\u1ee3p v\u1edbi c\u00e1ch \u0111i\u1ec7n v\u00e0 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a linh ki\u1ec7n.<\/li>\n
      • D\u1ea3i common-mode \u0111\u1ea7u v\u00e0o:<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n
      • Output swing v\u00e0 d\u00f2ng t\u1ea3i:<\/strong> l\u00e0 d\u00f2ng \u0111i\u1ec7n linh ki\u1ec7n c\u00f3 th\u1ec3 mang ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u00e3 n\u00eau.<\/li>\n
      • Offset v\u00e0 d\u00f2ng bias:<\/strong> l\u00e0 d\u00f2ng \u0111i\u1ec7n linh ki\u1ec7n c\u00f3 th\u1ec3 mang ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u00e3 n\u00eau.<\/li>\n
      • Gain-bandwidth\/slew rate ho\u1eb7c propagation delay:<\/strong> cho bi\u1ebft linh ki\u1ec7n c\u00f2n \u0111\u00e1p \u1ee9ng \u0111\u00fang \u0111\u1ebfn m\u1ee9c t\u1ed1c \u0111\u1ed9 ho\u1eb7c t\u1ea7n s\u1ed1 n\u00e0o.<\/li>\n
      • Nhi\u1ec5u v\u00e0 package:<\/strong> quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng l\u1eafp v\u1eeba bo m\u1ea1ch, th\u1ee9 t\u1ef1 ch\u00e2n v\u00e0 \u0111\u01b0\u1eddng t\u1ea3n nhi\u1ec7t; h\u00ecnh d\u00e1ng gi\u1ed1ng nhau ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 thay th\u1ebf.<\/li>\n<\/ul>\n
        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 3 c\u1ee7a IC so s\u00e1nh Comparator d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        6. C\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/h2>\n

        C\u00e1c c\u00f4ng th\u1ee9c d\u01b0\u1edbi \u0111\u00e2y m\u00f4 t\u1ea3 quan h\u1ec7 gi\u1eefa nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng c\u1ee7a linh ki\u1ec7n. U l\u00e0 \u0111i\u1ec7n \u00e1p, I l\u00e0 d\u00f2ng \u0111i\u1ec7n, R l\u00e0 \u0111i\u1ec7n tr\u1edf, P l\u00e0 c\u00f4ng su\u1ea5t, E ho\u1eb7c W l\u00e0 n\u0103ng l\u01b0\u1ee3ng, f l\u00e0 t\u1ea7n s\u1ed1 v\u00e0 t l\u00e0 th\u1eddi gian; \u0111\u01a1n v\u1ecb l\u1ea7n l\u01b0\u1ee3t l\u00e0 V, A, \u03a9, W, J, Hz v\u00e0 s.<\/p>\n

        \n
        C\u00f4ng th\u1ee9c 1:<\/strong> \u0110\u1ea7u ra \u0111\u1ed5i tr\u1ea1ng th\u00e1i theo d\u1ea5u c\u1ee7a U\u208a\u2212U\u208b<\/div>\n
        C\u00f4ng th\u1ee9c 2:<\/strong> Hysteresis \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi m\u1ea1ng h\u1ed3i ti\u1ebfp d\u01b0\u01a1ng<\/div>\n
        C\u00f4ng th\u1ee9c 3:<\/strong> \u0110i\u1ec7n tr\u1edf pull-up ph\u1ea3i gi\u1edbi h\u1ea1n d\u00f2ng \u0111\u1ea7u ra open-collector<\/div>\n<\/div>\n

        K\u00fd hi\u1ec7u c\u00f3 ch\u1ec9 s\u1ed1 d\u01b0\u1edbi d\u00f9ng \u0111\u1ec3 ch\u1ec9 \u0111\u00fang v\u1ecb tr\u00ed ho\u1eb7c tr\u1ea1ng th\u00e1i \u0111o, ch\u1eb3ng h\u1ea1n Ura<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra v\u00e0 Ushunt<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p tr\u00ean \u0111i\u1ec7n tr\u1edf shunt. V\u1edbi k\u00fd hi\u1ec7u ri\u00eang c\u1ee7a t\u1eebng h\u1ecd linh ki\u1ec7n, c\u1ea7n \u0111\u1ecdc \u0111\u1ecbnh ngh\u0129a ngay trong datasheet.<\/p>\n

        C\u00f4ng th\u1ee9c l\u00fd t\u01b0\u1edfng ch\u1ec9 \u0111\u00fang trong \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 n\u00eau. Khi ch\u1ecdn linh ki\u1ec7n th\u1eadt ph\u1ea3i t\u00ednh th\u00eam dung sai, nhi\u1ec7t \u0111\u1ed9, t\u1ea7n s\u1ed1, t\u1ea3i v\u00e0 gi\u1edbi h\u1ea1n trong datasheet.<\/p>\n

        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 4 c\u1ee7a IC so s\u00e1nh Comparator d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        7. C\u00e1c c\u00e1ch m\u1eafc IC so s\u00e1nh Comparator trong m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/h2>\n

        C\u00e1c c\u00e1ch m\u1eafc \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb d\u1ec5 nh\u1eadn bi\u1ebft \u0111\u1ebfn \u1ee9ng d\u1ee5ng n\u00e2ng cao. \u1ede m\u1ed7i s\u01a1 \u0111\u1ed3, h\u00e3y theo d\u00f5i \u0111i\u1ec3m n\u1ed1i ngu\u1ed3n, mass, \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra v\u00e0 chi\u1ec1u d\u00f2ng \u0111i\u1ec7n tr\u01b0\u1edbc khi t\u00ednh to\u00e1n.<\/p>\n

        \n
        \n

        M\u1ee9c c\u01a1 b\u1ea3n: nh\u1eadn bi\u1ebft \u0111\u01b0\u1eddng d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p<\/h3>\n

        1. So s\u00e1nh kh\u00f4ng \u0111\u1ea3o<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> T\u00edn hi\u1ec7u v\u00e0o ch\u00e2n +, \u0111i\u1ec7n \u00e1p chu\u1ea9n v\u00e0o ch\u00e2n \u2212; \u0111\u1ea7u ra \u0111\u1ed5i tr\u1ea1ng th\u00e1i khi t\u00edn hi\u1ec7u v\u01b0\u1ee3t ng\u01b0\u1ee1ng.<\/p>\n

        2. So s\u00e1nh \u0111\u1ea3o<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> T\u00edn hi\u1ec7u v\u00e0o ch\u00e2n \u2212, \u0111i\u1ec7n \u00e1p chu\u1ea9n v\u00e0o ch\u00e2n +; quan h\u1ec7 logic b\u1ecb \u0111\u1ea3o.<\/p>\n

        3. Schmitt trigger<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> H\u1ed3i ti\u1ebfp d\u01b0\u01a1ng t\u1ea1o hai ng\u01b0\u1ee1ng \u0111\u00f3ng\/c\u1eaft kh\u00e1c nhau \u0111\u1ec3 ch\u1ed1ng nhi\u1ec5u quanh \u0111i\u1ec3m chuy\u1ec3n.<\/p>\n<\/section>\n

        \n

        M\u1ee9c th\u1ef1c h\u00e0nh: \u1ee9ng d\u1ee5ng trong c\u00e1c kh\u1ed1i m\u1ea1ch<\/h3>\n

        4. Window comparator<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> Hai comparator ph\u00e1t hi\u1ec7n t\u00edn hi\u1ec7u n\u1eb1m trong ho\u1eb7c ngo\u00e0i m\u1ed9t kho\u1ea3ng \u0111i\u1ec7n \u00e1p.<\/p>\n

        5. \u0110\u1ea7u ra open-collector\/open-drain<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> Ph\u1ea3i c\u00f3 \u0111i\u1ec7n tr\u1edf pull-up t\u1edbi m\u1ee9c logic ph\u00f9 h\u1ee3p; kh\u00f4ng coi \u0111\u1ea7u ra l\u00e0 push-pull.<\/p>\n<\/section>\n<\/div>\n

        8. V\u00ed d\u1ee5 t\u00ednh to\u00e1n v\u00e0 \u1ee9ng d\u1ee5ng<\/h2>\n

        Comparator ngu\u1ed3n 5 V v\u1edbi ng\u01b0\u1ee1ng 2,5 V \u0111\u1ed5i tr\u1ea1ng th\u00e1i khi t\u00edn hi\u1ec7u \u0111i qua ng\u01b0\u1ee1ng; th\u00eam hysteresis gi\u00fap \u0111\u1ea7u ra kh\u00f4ng rung khi t\u00edn hi\u1ec7u c\u00f3 nhi\u1ec5u.<\/p>\n

        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 5 c\u1ee7a IC so s\u00e1nh Comparator d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        9. C\u00e1ch \u0111\u1ecdc m\u00e3 v\u00e0 datasheet<\/h2>\n

        \u0110\u1ecdc absolute maximum ri\u00eang v\u1edbi \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb; ki\u1ec3m tra common-mode, output swing theo t\u1ea3i, GBW\/slew rate ho\u1eb7c propagation delay, ki\u1ec3u \u0111\u1ea7u ra v\u00e0 pinout.<\/p>\n

        H\u00e3y ph\u00e2n bi\u1ec7t th\u00f4ng s\u1ed1 l\u00e0m vi\u1ec7c khuy\u1ebfn ngh\u1ecb v\u1edbi gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i. Gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ee9c n\u00ean duy tr\u00ec trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n

        \"IC
        \u1ea2nh th\u1ef1c t\u1ebf 6 c\u1ee7a IC so s\u00e1nh Comparator d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        10. C\u00e1ch \u0111o v\u00e0 ki\u1ec3m tra tr\u00ean bo m\u1ea1ch<\/h2>\n
          \n
        1. X\u00e1c \u0111\u1ecbnh \u0111\u00fang ch\u00e2n ngu\u1ed3n v\u00e0 ki\u1ec3m tra ngu\u1ed3n tr\u01b0\u1edbc<\/li>\n
        2. \u0110o \u0111i\u1ec7n \u00e1p hai \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra theo c\u1ea5u h\u00ecnh h\u1ed3i ti\u1ebfp<\/li>\n
        3. Ki\u1ec3m tra \u0111\u1ea7u ra c\u00f3 b\u00e3o h\u00f2a do common-mode, t\u1ea3i ho\u1eb7c ngu\u1ed3n kh\u00f4ng ph\u00f9 h\u1ee3p<\/li>\n
        4. D\u00f9ng oscilloscope ki\u1ec3m tra dao \u0111\u1ed9ng v\u00e0 slew rate khi c\u1ea7n<\/li>\n<\/ol>\n

          Khi \u0111o tr\u1ef1c ti\u1ebfp tr\u00ean bo, c\u00e1c linh ki\u1ec7n n\u1ed1i v\u1edbi c\u00f9ng n\u00fat m\u1ea1ch c\u00f3 th\u1ec3 l\u00e0m k\u1ebft qu\u1ea3 kh\u00e1c tr\u1ecb s\u1ed1 ri\u00eang c\u1ee7a linh ki\u1ec7n. N\u1ebfu c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp, ch\u1ec9 th\u00e1o m\u1ed9t \u0111\u1ea7u ho\u1eb7c ch\u00e2n \u0111o ph\u00f9 h\u1ee3p sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 h\u1ebft \u0111i\u1ec7n t\u00edch.<\/p>\n

          \"H\u00ecnh
          H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o 1: H\u00ecnh minh h\u1ecda \u0111o ki\u1ec3m IC so s\u00e1nh Comparator. Ngu\u1ed3n: Op Amps Design Application and Troubleshooting, trang 178.<\/figcaption><\/figure>\n
          \"H\u00ecnh
          H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o 2: H\u00ecnh minh h\u1ecda \u0111o ki\u1ec3m IC so s\u00e1nh Comparator. Ngu\u1ed3n: Op Amps Design Application and Troubleshooting, trang 172.<\/figcaption><\/figure>\n

          11. D\u1ea1ng h\u01b0 h\u1ecfng v\u00e0 nguy\u00ean nh\u00e2n<\/h2>\n

          D\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 quan s\u00e1t ho\u1eb7c \u0111o \u0111\u01b0\u1ee3c<\/h3>\n
            \n
          • \u0110\u1ea7u ra k\u1eb9t rail<\/li>\n
          • Offset ho\u1eb7c nhi\u1ec5u t\u0103ng<\/li>\n
          • M\u1ea5t m\u1ed9t k\u00eanh<\/li>\n
          • Dao \u0111\u1ed9ng<\/li>\n
          • D\u00f2ng ti\u00eau th\u1ee5 t\u0103ng<\/li>\n<\/ul>\n

            Nh\u1eefng nguy\u00ean nh\u00e2n c\u1ea7n ki\u1ec3m tra<\/h3>\n
              \n
            • Qu\u00e1 \u00e1p \u0111\u1ea7u v\u00e0o\/ngu\u1ed3n<\/li>\n
            • ESD<\/li>\n
            • T\u1ea3i \u0111\u1ea7u ra qu\u00e1 n\u1eb7ng<\/li>\n
            • M\u1ea1ch h\u1ed3i ti\u1ebfp m\u1ea5t \u1ed5n \u0111\u1ecbnh<\/li>\n
            • Nhi\u1ec7t ho\u1eb7c layout ngu\u1ed3n k\u00e9m<\/li>\n<\/ul>\n

              M\u1ed9t d\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u nguy\u00ean nh\u00e2n. Ch\u1ec9 k\u1ebft lu\u1eadn linh ki\u1ec7n h\u1ecfng sau khi k\u1ebft h\u1ee3p k\u1ebft qu\u1ea3 \u0111o, s\u01a1 \u0111\u1ed3 m\u1ea1ch v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh.<\/p>\n

              12. C\u00e1ch l\u1ef1a ch\u1ecdn linh ki\u1ec7n thay th\u1ebf<\/h2>\n
                \n
              • \u0110\u00fang pinout v\u00e0 ki\u1ec3u \u0111\u1ea7u ra<\/li>\n
              • \u0110i\u1ec7n \u00e1p ngu\u1ed3n\/common-mode ph\u00f9 h\u1ee3p<\/li>\n
              • GBW, slew rate ho\u1eb7c delay kh\u00f4ng th\u1ea5p h\u01a1n y\u00eau c\u1ea7u<\/li>\n
              • Offset, bias, noise v\u00e0 kh\u1ea3 n\u0103ng l\u00e1i t\u1ea3i ph\u00f9 h\u1ee3p<\/li>\n
              • \u1ed4n \u0111\u1ecbnh t\u1ea1i \u0111\u1ed9 l\u1ee3i \u0111ang d\u00f9ng<\/li>\n<\/ul>\n

                13. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

                C\u00f3 th\u1ec3 \u0111o IC so s\u00e1nh Comparator tr\u1ef1c ti\u1ebfp tr\u00ean bo m\u1ea1ch kh\u00f4ng?<\/h3>\n

                C\u00f3 th\u1ec3 ki\u1ec3m tra s\u01a1 b\u1ed9 sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 \u0111i\u1ec7n t\u00edch. Tuy nhi\u00ean, nh\u1eefng nh\u00e1nh m\u1ea1ch n\u1ed1i song song ho\u1eb7c linh ki\u1ec7n b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 l\u00e0m sai k\u1ebft qu\u1ea3; khi c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp ph\u1ea3i t\u00e1ch ch\u00e2n ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ed1i chi\u1ebfu s\u01a1 \u0111\u1ed3.<\/p>\n

                C\u00f3 th\u1ec3 d\u00f9ng linh ki\u1ec7n c\u00f3 th\u00f4ng s\u1ed1 cao h\u01a1n \u0111\u1ec3 thay th\u1ebf kh\u00f4ng?<\/h3>\n

                Tr\u01b0\u1edbc h\u1ebft, linh ki\u1ec7n thay th\u1ebf ph\u1ea3i \u0111\u00fang ch\u1ee9c n\u0103ng v\u00e0 tr\u1ecb s\u1ed1 ch\u00ednh. M\u1ed9t s\u1ed1 gi\u1edbi h\u1ea1n nh\u01b0 c\u00f4ng su\u1ea5t ho\u1eb7c \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 ch\u1ecdn cao h\u01a1n, nh\u01b0ng k\u00edch th\u01b0\u1edbc, \u0111\u1eb7c t\u00ednh xung, t\u1ea7n s\u1ed1 v\u00e0 nhi\u1ec7t v\u1eabn ph\u1ea3i ph\u00f9 h\u1ee3p. V\u1edbi linh ki\u1ec7n nhi\u1ec1u ch\u00e2n, s\u01a1 \u0111\u1ed3 ch\u00e2n b\u1eaft bu\u1ed9c ph\u1ea3i t\u01b0\u01a1ng th\u00edch.<\/p>\n

                \n

                T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n

                C\u00e1c t\u00e0i li\u1ec7u d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu k\u00fd hi\u1ec7u, nguy\u00ean l\u00fd, th\u00f4ng s\u1ed1 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111o ki\u1ec3m c\u1ee7a linh ki\u1ec7n.<\/p>\n

                  \n
                1. [1] Op Amps Design Application and Troubleshooting<\/strong> \u2014 trang 151, trang 186.<\/li>\n
                2. [2] CMOS Analog Circuit Design<\/strong> \u2014 trang 294.<\/li>\n
                3. [3] CMOS. Circuit Design, Layout and Simulation (Baker,Li,Boyce-1997)2<\/strong> \u2014 trang 697.<\/li>\n
                4. [4] ON_Analog_Integrated_Circuits<\/strong> \u2014 trang 1935, trang 1933.<\/li>\n
                5. [5] Digital Electronics<\/strong> \u2014 trang 204.<\/li>\n
                6. [6] Electrical Circuits<\/strong> \u2014 trang 2253.<\/li>\n<\/ol>\n<\/section>\n

                  14. K\u1ebft lu\u1eadn<\/h2>\n

                  Mu\u1ed1n s\u1eed d\u1ee5ng linh ki\u1ec7n n\u00e0y \u0111\u00fang c\u00e1ch, ng\u01b0\u1eddi \u0111\u1ecdc c\u1ea7n nh\u1eadn d\u1ea1ng \u0111\u00fang lo\u1ea1i, hi\u1ec3u k\u00fd hi\u1ec7u v\u00e0 \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i, t\u00ednh \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c, \u0111o ki\u1ec3m an to\u00e0n v\u00e0 \u0111\u1ed1i chi\u1ebfu datasheet tr\u01b0\u1edbc khi thay th\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  T\u00ecm hi\u1ec3u IC so s\u00e1nh Comparator: k\u00fd hi\u1ec7u, ki\u1ec3u \u0111\u00f3ng g\u00f3i, c\u00f4ng th\u1ee9c, c\u00e1ch m\u1eafc trong m\u1ea1ch, ph\u01b0\u01a1ng ph\u00e1p \u0111o, l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n","protected":false},"author":1,"featured_media":2358,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-2367","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dien-tu"],"yoast_head":"\nIC so s\u00e1nh Comparator l\u00e0 g\u00ec? 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