This post explains for the semiconductor CM5018.
The Part Number is CM5018.
The function of this semiconductor is Low Power Narrowband FM IF.
Manufacturers : Ceramate
Preview images :
CM5018 (Preliminary) Low Power Narrowband FM IF The CM5018 includes an Oscillator, Mixer, Limiting Amplifier, Quadrature Discriminator, Active Filter, Squelch, Scan Control and Mute Switch. This device is designed for use in FM dual conversion communications equipment. • Operates from 2.0 to 8.0 V Supply Low Drain Current 2.8 mA Typical @ VCC = 4.0 Vdc Excellent Sensitivity: Input Limiting Voltage – – 3.0 dB = 2.6 µV Typical Low Number of External Parts Required Operating Frequency Up to 60 MHz Full ESD Protection Representative Block Diagram Mixer Input 16 Scan Control 13 Squelch In 12 Filter Output 11 Filter Recovered Input Audio 10 – Filter Amp Squelch Trigger with Hysteresis + AF Amp 9 Gnd 15 Mute 14 Demodulator Mixer 1.8 k Oscillator 1.8 k 1 Crystal Osc 2 3 Mixer Output 4 VCC 5 Limiter Input 6 7 8 Quad Coil Limiter Amp 50 k 10 pF 52 k Decoupling This device contains 92 active transistors. * All specs and applications shown above subject to […]