TEA7530

TEA7530 MONITOR AMPLIFIER PRELIMINARY DATA LOW VOLTAGE POWER: 100mW AT 5V ANTIDISTORTION SYSTEM FOR LOW CURRENT LINES DESCRIPTION This 8 pins IC is designed for monitor telephone set and provides: a) Signal amplification for monitoring b) Antidistortion by automatic gain adaptation. ABSOLUTE MAXIMUM RATINGS Symbol Top VLS ILS Temperature Range Supply Voltage Supply Current for T > 300ms for T ≤ 300ms Parameter MINIDIP ORDERING NUMBERS: TEA7530DP SO-8 TEA7530FP Value Minidip -20 to +70 6 90 150 SO -20 to +70 6 75 120 Unit °C V mA mA BLOCK DIAGRAM June 1993 1/11 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. TEA7530 PIN CONNECTION (top view) PIN FUNCTION N° 1 2 3 4 5 6 7 8 Symbol GND ADS VLS INP LS1 VREF LS2 ADJ Ground Antidistortion Supply Input Signal Output Loudspeaker 1 Internal Reference Voltage Output Loudspeaker 2 Adjust Internal Reference VLS Description FUNCTIONAL DESCRIPTION TEA7530 performs the following functions: The circuit amplifies the incoming signal and feeds it to the loudspeaker. ♦ The Antidistortion system is incorporated for low current available from line. ♦ The maximum power available on a 50Ω impedance loudspeaker is 25mW at 3V and 100mW at 5V. ELECTRICAL CHARACTERISTICS (Tamb = 25°C, ILS = 30mA unless otherwise specified) Symbol VLS1 VLSM VADJ G Parameter VLS1 Supply VLS Maximum Voltage Pin 8 Loudspeaker Amplifier V(5) − V(7) Gain = V(4) THD ZINPIN...