Overview LA1800 for single FM / AM radio circuit, FM Part contains mixing, the local oscillator in the release, frequency, squelch, low-pass Filters, etc .; AM part includes high-level detection, in addition to sound Frequency drive stage and amplifier circuit, with a LA1800 circuit and less Number of peripheral components, can produce a complete radio. The circuit workers For the power supply voltage range of 2.5V ~ 5V. The circuit is densely packed in a 22-pin dual in-line package. main feature ● less external components; ● low power consumption, 5.6mA / FM, 3.2mA / AM; ● low operating voltage, Vccmin = 2.5V.
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