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 = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA Power Dissipation (TA 75C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C
Electrical Characteristics: (VCC = 9V, f = 1kHz, TA = +25C 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 = 2.2k 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 % k Vrms
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)
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