TEA6101

INTEGRATED CIRCUITS DATA SHEET TEA6101/T Antenna diversity circuit Objective specification File under Integrated circuits, IC01 May 1992 Philips Semiconductors Objective specification Antenna diversity circuit FEATURES Ability to switch between up to four antennae Switching signal derived from two signals: the audio and the level signals Floating switching threshold adjusts switching rate to prevailing circumstances: – increasing threshold due to excessive noise – increasing threshold due to numerous level variations Memory for the most favourable antenna signal to overcome unnecessary switching Signal-dependent `soft` muting circuit Mode selection to the first antenna receiving an AM signal whilst the diversity system is reset. APPLICATIONS Car radio receivers Mobile radio communications equipment QUICK REFERENCE DATA SYMBOL VP IP VI(p-p) Ios VL Tamb positive supply voltage positive supply current audio input voltage (peak-to-peak value) antenna switch output current (source/sink) −3 dB audio attenuation (soft mute) operating ambient temperature range PARAMETER − − − − − −30 MIN. TYP. 8.5 14 − − 1.45 − GENERAL DESCRIPTION TEA6101/T Intended for multi-antenna FM car radio reception (antenna diversity system), the TEA6101/T selects the most favourable signal from one of up to four antennae. Founded upon audible signal disturbance the criteria are derived from two signals: high frequency components (e.g. spikes due to noise and multipath reception) and vari...