Function Description
Parameters
Packaging form
Low pass filter, intermediate frequency amplifier, quadrature detector, mute.
SOP24
D4424 is a single-chip FM/TV front-end amplifier circuit
SIP9
D7021 includes high amplifier, frequency mixing, local oscillator, two-stage active intermediate frequency filter, intermediate frequency limiting amplifier, frequency discriminator, low-frequency converter, low-frequency amplifier, noise reduction circuit, and related noise reduction system
SOP16
1.5V AM/FM radio circuit
DIP16、SOP16
Monolithic frequency modulation receiving circuit
SOP16
Frequency modulated high frequency amplifier circuit
SIP9
FM/AM monolithic radio circuit -D1800
DIP22
FM/AM monolithic radio circuit -D1691
SOP28
FM if amplifier circuit
DIP16
FM high frequency amplifier for car radio
Car radio FM if amplifier
MFP20
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