IL6270

TECHNICAL DATA GAIN CONTROLLED MICROPHONE FIER/VOGAD PREAMPLI- The IL 6270 is a silicon integrated circuit combining the functions of audio amplifier and voice operated gain adjusting device (VOGAD). It is designed to accept signals from a low sensitivity microphone and to provide an essentially constant output signal for a 50dB range of input. The dynamic range, attack and decay times are controlled by external components. FEATURES Constant Output Signal Fast Attack Low Power Consumption Simple Circuitry APPLICATIONS Audio AGC Systems Transmitter Overmodulation Protection Tape recorders QUICK REFERENCE DATA Supply Voltage: 4.5V to 10V Voltage Gain: 52dB ABSOLUTE MAXIMUM RATINGS Supply Voltage: 12V Storage Temperature: -550C to +1250C 8 w w w t a .D U CC S a 1 2 3 4 e h Tamb = -30ºC - +70ºС for any type of package Fig.1 U 4 t e 1 8 1 .c N – index of DIP m o D – index of SOIC PIN CONNECTION 8 7 6 5 AGC T ime Const Preamp Output Preamp Input Main Amp Output Main Amp Input OV Preamp Input Fig.2 1 www.DataSheet4U.com IL6270 Preamp Output Main Amp Input UCC Preamp Input Preamp Input Main Amp Output OV AGC Time Output AGC DETECTOR Fig.3 IL6270 block diagram 2 IL6270 ELECTRICAL CHARACTERISTICS (UCC=6V, FI=1kHz, Tamb=-30ºC to +85ºC) Characteristics Supply current Conditions Min Value Typ. 5 Max 10 Units mA Input impendance Pin 5 or 6 150 Ohm Differential input impendance 300 Ohm Voltage gain 72mkV rms input pin 4 4m...