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由深圳凯隆电子公司生产的凯隆KK-418四波段收音机,主电路主要以日本索尼公司生产的单片调幅/调频收音专用集成电路 CXA1191M为核心,CXA1191M内含调幅混频、本振、中放、检波和调频高放、本振、混频、中放、鉴频以及附属电路有调谐指示驱动、稳压等,用一片CXA1191M和少量外围元件组成一部完整的多波段收音机。本文介绍的凯隆回波段AM/FM/TV _(1～3)/TV_(6～12)(TV_(4～5)含在FM波段内)多功能收音机,就是CXA1191M电路中典型的一种。下面
Kailong KK-418 four-band radio produced by Shenzhen Kailong Electronics Co., Ltd. is mainly composed of the CXA1191M single-chip AM / FM radio ASIC manufactured by Sony Corporation of Japan. The CXA1191M includes AM mixing, LO, Put, detection and FM high-Fang, LO, mixer, in Fang, Kam and auxiliary circuit tuned instructions drive, regulator, etc., with a CXA1191M and a small amount of external components to form a complete multi-band radio. This article describes the Kelon echo AM / FM / TV _ (1 ~ 3) / TV_ (6 ~ 12) (TV_ (4 ~ 5) included in the FM band) Multifunction radio, CXA1191M circuit is a typical . the following