CA3189

www.DataSheet4U.com PO CT ODU ODUCT R P PR TE OLE UTE OBS UBSTIT E LE S CA3089 SSIB CA3189 FM IF System May 1999 [ /Title (CA31 89) /Subject (FM IF System) /Autho r () /Keywords (Harris Semiconductor, FM IF amplifier, quadrat ure detector, tuning meter output, limiter, AFC circuit, AGC circuit, muting circuit, industrial tempera- Features Includes IF Amplifier, Quadrature Detector, AF Preamplifier, and Specific Circuits for AGC, AFC, Tuning Meter, Deviation-Noise Muting, and ON Channel Detector FM IF Amplifier Applications in High-Fidelity, Automotive, and Communications Receivers Exceptional Limiting Sensitivity -12µV (Typ) at -3dB Point Low Distortion -0.1% (Typ) (with Double-Tuned Coil) Single-Coil Tuning Capability Improved S + N/N Ratio Externally Programmable Recovered Audio Level Provides Specific Signal for Control of Interchannel Muting (Squelch) Provides Specific Signal for Direct Drive of a Tuning Meter On Channel Step for Search Control Provides Programmable AGC Voltage for RF Amplifier Provides a Specific Circuit for Flexible Audio Output Internal Supply Voltage Regulators Externally Programmable “On” Channel Step Width, and Deviation at Which Muting Occurs Description The Harris CA3189E is a monolithic integrated circuit that provides all the functions of a comprehensive FM-lF system. The block diagram of the CA3189E includes a three-stage FM-lF amplifier/limiter configuration with level detectors for each stage, a doubly-balanced quadrat...