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TEA6101 Arkusz danych(PDF) 2 Page - NXP Semiconductors |
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TEA6101 Arkusz danych(HTML) 2 Page - NXP Semiconductors |
2 / 13 page May 1992 2 Philips Semiconductors Objective specification Antenna diversity circuit TEA6101/T 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 GENERAL DESCRIPTION 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 variations in signal level as a result of multipath reception or fluctuations in field strength. QUICK REFERENCE DATA ORDERING INFORMATION Notes 1. SOT102-1; 1996 September 10. 2. SOT163-1; 1996 September 10. SYMBOL PARAMETER MIN. TYP. MAX. UNIT VP positive supply voltage − 8.5 − V IP positive supply current − 14 − mA VI(p-p) audio input voltage (peak-to-peak value) −− 3V Ios antenna switch output current (source/sink) −− 7mA VL −3 dB audio attenuation (soft mute) − 1.45 − V Tamb operating ambient temperature range −30 − +85 °C EXTENDED TYPE NUMBER PACKAGE PINS PIN POSITION MATERIAL CODE TEA6101 18 DIL plastic SOT102(1) TEA6101T 20 SO plastic SOT163A(2) |
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