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LH4501是彩电用大规模单片集成电路,可以与飞利浦公司的TDA4501互换。该产品是在单片式黑白电视机用集成电路LH4500/LH4503(对应的飞利浦产品为TDA 4500/TDA 4503)的基础上发展起来的,增加了一个沙堡脉冲发生器和一级第二相位控制环路,并采用了数字化的场分频电路。LH 4501包括了彩色电视接收机内除高频调谐器和彩色解码器以外的所有小信号电路,所以又称为彩电小信号处理器。
LH4501 is a color TV with large-scale monolithic integrated circuits, Philips TDA4501 interchangeable. The product was developed on the monolithic black-and-white TV LH4500 / LH4503 (corresponding to the Philips product TDA 4500 / TDA 4503) with the addition of a sandcastle pulser and a second phase control Loop, and uses a digital field-frequency circuit. LH 4501 includes a color television receiver in addition to high-frequency tuner and color decoder, all small signal circuits, it is also known as color TV small signal processor.