NTE1223

NTE1223 Integrated Circuit Low Noise High Gain Pre−Amplifier Circuit For General Purpose Audio Pre−Amplifiers Features: D External initial stage emitter resistor which determines feedback voltage gain and assures better temperature characteristics. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA Power Dissipation (TA ≤ 75°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C Electrical Characteristics: (VCC = 9V, f = 1kHz, TA = +25°C unless otherwise specified) Parameter Total Circuit Current Closed Circuit Voltage Gain Output Voltage (AC) Total Harmonic Distortion Input Resistance Input Referred Noise Voltage Symbol Itot Gvo Vo THD Ri Vni Rg = 2.2kΩ Vi = 0.1mV THD = 1% VO= 0.3V Test Conditions Min − 75 1.5 − − − Typ 1.3 80 2 0.07 130 0.8 Max 2.3 − − 0.2 − 1.5 Unit mA dB Vrms % kΩ µVrms Pin Connection Diagram (Front View) 7 VCC 6 Output 5 Bypass 4 GND 3 Feedback 2 Input 1 Equalization .728 (18.5) Max .118 (3.0) .248 (6.3 Max .095 (2.42) 1 7 .118 (3.0) Min .100 (2.54) .600 (15.24) .012 (0.32)