Switches Analog dan Multiplex

Switch analog adalah IC yang dirancang untuk mengganti sinyal analog melalui kontrol digital. Struktur internal perangkat ini biasanya terdiri dari sejumlah gerbang kontrol logika yang dihubungkan dengan tahapan transistor yang digunakan untuk mengontrol aliran sinyal analog. Switch bilateral bilateral CMOS 4066B menggunakan tegangan suplai tunggal dari 3 hingga 15 V. Ini dapat mengganti sinyal analog atau digital dalam _7,5 V dan memiliki disipasi daya maksimum sekitar 700 mW. Sakelar individual dikontrol oleh input digital A hingga D. Switch analog DPDT AH0014D yang kompatibel dengan TTL dapat mengalihkan sinyal analog _10 V melalui input kontrol logika A dan B.

Perhatikan bahwa perangkat ini memiliki persediaan analog dan digital yang terpisah: V + dan V- adalah analog; VCC dan GND adalah digital. Switch analog DGOS dual-channel CM30 DPST dapat mengubah sinyal analog dalam kisaran _10-V dengan kecepatan switching hingga 15 ns. Ada sejumlah sirkuit yang menggunakan sakelar analog. Mereka ditemukan di sirkuit modulator / demodulasi, sirkuit frekuensi yang dikontrol secara digital, sirkuit gain sinyal analog, dan sirkuit konversi analog-ke-digital di mana mereka sering bertindak sebagai saklar tahan sampel. Mereka tentu saja dapat digunakan hanya untuk menghidupkan atau mematikan perangkat analog yang diberikan sementara demultiplexer digital bertindak seperti distributor data.

Multiplexer analog dan demultiplexer bekerja dengan cara yang sama tetapi mampu memilih atau mendistribusikan sinyal analog. (Mereka masih menggunakan input pilih digital untuk memilih jalur mana yang terbuka dan yang tertutup untuk transmisi sinyal.) Perangkat ini berfungsi baik sebagai multiplexer atau demultiplexer, karena input dan outputnya dua arah (sinyal dapat mengalir ke dua arah). Ketika digunakan sebagai multiplexer, sinyal analog masuk melalui jalur I / O 0 hingga 7, sedangkan kode digital yang memilih input mana yang akan diteruskan ke jalur O / I analog (pin 3) diterapkan ke input digital A, B, dan C Lihat tabel kebenaran pada gambar. Saat digunakan sebagai demultiplexer, koneksi dibalik.

Input analog masuk melalui jalur O / I analog (pin 3) dan melewati salah satu dari tujuh jalur I / O analog – output spesifik dipilih lagi oleh input digital A, B, dan C. Perhatikan bahwa ketika garis penghambat (INH) tinggi, tidak ada alamat yang dipilih. Level tegangan analog input / output untuk 4051B terbatas pada wilayah antara VDD tegangan suplai positif dan VEE tegangan suplai negatif analog. Perhatikan bahwa pasokan VSS di-ground. Jika sinyal analog yang Anda rencanakan untuk digunakan semuanya positif, VEE dan VSS keduanya dapat dihubungkan ke landasan bersama. Namun, jika Anda berencana untuk menggunakan tegangan analog yang berkisar dari, katakanlah, -5 hingga + 5V, VEE harus diatur ke -5V, sedangkan VDD harus diatur ke +5 V. 4051B menerima sinyal digital dari 3 hingga 15 V, sambil memungkinkan sinyal analog dari -15 hingga -15 V.

37 thoughts on “Switches Analog dan Multiplex

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  35. En esos casos el hombre puede tener erecciones al despertarse o espontáneas. Enfermedades neurológicas: Como lo mencionamos en el anterior, la erección se produce con la circulación sanguínea, pero es el cerebro el que indica dicho proceso mediante la excitación y los estímulos sexuales. Puede provocar efectos secundarios como dolor de cabeza, sofocos, trastornos gastrointestinales o visuales.

  36. PS: Si ven bien, la descripcion ya no es en ingles, eso es porque me di cuenta de que no vale la pena, la mayoria de la gente habla español y los que hablan ingles, la mayoria sabe español tambien. Te recomendamos que veas esta página en donde te explican cómo tener potentes y naturales erecciones en 21 días o menos.

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