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近几年来随着音响集成电路的迅速发展,出现了一批收录机专用集成电路,这对改善收录机性能,提高收录机设计水平起到了促进作用,改变了过去用晶体管设计收录机的落后状况。采用音响集成电路设计收录机,除了具有外围电路简单,性能稳定可靠等优点外,主要是在调试、维修和质量管理方面更适合大批量生产的要求,所以得到了较广泛地推广应用。一、音响系列集成电路目前收录机用音响集成电路的品种很多,有调频高频头、调频/调幅中频放大、检波、调频立体声解码、录放均衡放大、功率放大和发光二极管驱动等各种用途的集成电路,例如 TA7335P(D7335P)、TA7640AP(D7640 AP)、TA 7343 AP(D7343 AP)、TA 7668 BP(D7668CP)和 TEA2025等。选用这些集成电路,能够满足对各种收录机的设计要求。
In recent years, with the rapid development of audio integrated circuits, there has been a number of tape recorders dedicated integrated circuits, which improve the tape recorders performance, improve the design level of tape recorders played a catalytic role, changing the past with the transistor design tape recorders behind. In addition to the advantages of simple peripheral circuits, stable and reliable performance, etc., it is mainly suitable for the requirements of mass production in terms of debugging, maintenance and quality management, and therefore it has been widely applied and popularized. I. INTEGRATED CIRCUITRY SERIES At present, there are many varieties of audio ICs for recording, including FM tuner, FM / AM IF amplification, detection, FM stereo decoding, recording and playback balanced amplification, power amplification and LED driver. Circuits such as TA7335P (D7335P), TA7640AP (D7640 AP), TA 7343 AP (D7343 AP), TA 7668 BP (D7668CP) and TEA2025 and the like. Use these integrated circuits, to meet the design requirements of a variety of tape recorders.