TEA7532

TEA7532 MONITOR AMPLIFIER . . . . PROGRAMMABLE GAIN IN STEPS OF 6 dB ON/OFF POSITION LOW VOLTAGE POWER : 100 mW AT 5 V DESCRIPTION This 16 pins IC is designed for monitor (loudspeaker) telephone set and provides : a) Signal amplification for monitoring (loudspeaker) b) Antiacoustic feedback (antilarsen) c) Antidistortion by automatic gain adaptation d) Antilarsen adjustment (full duplex) BLOCK DIAGRAM DIP16 SO16 ORDERING NUMBERS : TEA7532DP (DIP16) TEA7532FP (SO16) July 1993 1/16 TEA7532 PIN CONNECTION (Top view) PIN DESCRIPTION N° 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol ADJ ALADJ ADS VLS MIC1 MIC2 FAL TC1 INP LS1 VREF LS2 GND PG0 PG1 ON/OFF Description Adjust Internal Reference V LS Antilarsen Adjustement Antidistortion Supply Microphone Input Microphone input Antilarsen Filter Antilarsen Time Constant Input Signal Output Loudspeaker 1 Internal Resistance Output Loudspeaker 2 Ground Inputs Program Level to Loudspeaker ABSOLUTE MAXIMUM RATINGS Symbol Top VLS ILS VL Parameter Temperature Range Supply Voltage Supply Current for T > 300ms for T ≤ 300ms Voltage Level (pins, PG0, PG1, on/off) Value –5 to + 45 6 90 150 0.6 > to VS + 0.6 Unit °C V mA mA V 2/16 TEA7532 ELECTRICAL CHARACTERISTICS (Tamb = 25oC, ILS = 30mA unless otherwise specified) Symbol VLS1 VLSM VADJ G G000 G001 G010 G011 G100 THD Parameter VLS Supply VLS Maximum Voltage Pin 1 V10 − V12 Loudspeaker Amplifier Gain = V9 Test Conditions ILS = 2mA (fig. 7) ILS = 30mA (fig. 7) Ipin 1 = 50µA (fig. 7 ; ...