NTE1468 Integrated Circuit Audio, Low Power Output Amplifier Applications: D Line Output Amplifier D Recording Head Driver and Headphone Driver of Tape Recorder Deck. Features: D Low Noise: VNI = 1µVrms D Wide Operating Supply Voltage Range: VCC = 3.5 to 25V D 150mW Audio Output Power at VCC = 20V, RL = 150Ω Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW Derated Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4mW/°C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Electrical Characteristics: (VCC = 20V, TA = +25°C, RL = 150Ω, Rf = 600Ω, f = 1kHz unless otherwise specified) Parameter Operating Supply Voltage Range Supply Current Voltage Gain (Open Loop) Voltage Gain (Closed Loop) Total Harmonic Distortion Symbol Test Conditions Min Typ Max 3.5 20 25 V f = 1kHz, VOUT = 0 – 4.0 6.0 mA f = 1kHz, VOUT = 4.5Vrms – 16.5 – mA GVO Rf = 0Ω – 63 – dB GV Note 1 VCCopr ICC THD Maximum Output Voltage VOM Input Resistance RIN Output Noise Voltage VNO 36.5 40.0 43.5 Unit dB VOUT = 4.5Vrms – 0.5 1.0 % VCC = 6.5V, VOUT = 1.0Vrms – 1.0 – % THD = 10% – 6 – Vrms – 30 – kΩ – 100 BW = 20Hz to 20kHz, Rg = 1kΩ 200 µVrms Note 1. In regard to the value of voltage gain (closed loop), it is possible to be classified. Pin Connection Diagram (Front View) 7 Feedback 6 VCC 5 Output 4 GND 3 Bypass 2 Bypass 1 Input .128 (3.2) .099 (2.5) Min .012 (0.25) .700 (17.8) Max 1 7 .100 (2.54) .600 (15.24) .323 (8.2) Max