DESCRIPTION The TK10931V is an IF system IC designed for communications equipment. The TK10931V contains the following functions: Oscillator Mixer FM IF Limiter Quadrature Detector AM AGC Amplifier Squelch Noise Amplifier AM Detector Squelch Rectifier RSSI Output RF AGC Output Squelch Comparator FEATURES ■ Simultaneous Operation (AM Section, FM Section) ■ AM Section with ON/OFF Control Input ■ AGC Amplifier Control Input ■ AGC Amplifier Output ■ High-speed FM Limiter Amplifier (Up to 11 MHz) ■ RF AGC Output (for External RF Amplifier) ■ Built-in Noise Squelch Circuit (Noise Amplifier, Rectifier, Comparator) ■ Wide Range Voltage Operation (2.5 V to 8.5 V) ■ Very Small Package (TSSOP-24) APPLICATIONS ■ Amateur Radios ■ CB Radios ■ Utility Radios ■ Scanner Receivers
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