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| ICs for Audio Common Use AN7062N High Voltage Input Amplifier Circuit for Hi-Fi Power Amplifier s Overview The AN7062N is a high voltage integrated circuit designed for pre-driver of 60W-class Hi-Fi audio amp. Stereo operation is enabled due to two amplifiers built-in. 1 2 3 21.70.3 4 5 6 7 8 9 6.30.25 3.80.25 (3.45) 18 17 16 15 14 13 12 11 10 0.51min. 2.54 0.3 - 0.2 + 0.1 5 Unit : mm 0.50.1 1.20.25 14 15 16 17 s Features * High voltage * Low noise : Vni = 2.5V (typ.) * Low distortion : THD = 0.003% (typ.) * Good channel separation * Wide operating supply voltage range 3 ~ 15 7.620.25 18-Lead DIP Package (DIP018-P-300E) s Block Diagram +VCC 4 5 6 7 (L.F.B) 8 9 11 (L.F.B) 12 13 Current Mirror Emitter Follower Emitter Follower Current Mirror Cascade Bootstrap Current Mirror Cascade Bootstrap 3 Differential Amplifier Current Source Differential Amplifier 2 1 GND 18 -VCC1 10 -VCC2 AN7062N s Absolute Maximum Ratings (Ta= 25C) Parameter Supply Voltage Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Symbol + VCC - VCC ICC PD Topr Tstg ICs for Audio Common Use Rating + 74 - 16 10 800 - 25 ~ + 75 - 55 ~ + 150 Unit V V mA mW C C s Electrical Characteristics (VCC = 70V, f = 20kHz, Ta = 25C) Parameter Plus Side Supply Current Minus Side Supply Current Output Noise Voltage Output Noise Voltage Total Harmonic Distortion Open Circuit Voltage Gain Symbol Itot - 1 Itot - 2 Vno1 Vno2 THD GVO Vi = 0mV Vi = 0mV Vi = 0mV, Rg = 0, DIN - A Filter, f = 20Hz ~ 20kHz, -12dB/OCT Vi = 0mV, Rg = 0 VO = 30V VO = 30V Condition min. 2.5 1.5 typ. 5 2.8 0.14 0.5 0.003 95 max. 7.5 4.5 1 1.5 0.01 Unit mA mA mV mV % dB PD - Ta 1.0 0.8 Power Dissipation PD (W) 0.6 0.4 0.2 0 0 40 80 120 160 200 Ambient Temperature Ta (C) ICs for Audio Common Use AN7062N THD - f 0.020 0.018 Total Harmonic Distortion THD (%) 0.016 0.014 0.012 0.010 0.008 0.006 0.004 0.002 0 10 100 1k 10k 100k VCC = 70V VO = 30V Total Harmonic Distortion THD (%) 0.020 0.018 0.016 0.014 0.012 0.010 0.008 0.006 0.004 0.002 0 10 100 THD - RS VCC = 70V VO = 30V f = 20kHz 1k 10k 100k Frequency f (Hz) Source Resistance RS () s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 GND Input (Ch.1) N.F.B (Ch.1) Phase Compensation (Ch.1) Phase Compensation (Ch.1) Linear Feedback (Ch.1) Linear Feedback (Ch.1) Output (Ch.1) +VCC Pin Name Pin No. 10 11 12 13 14 15 16 17 18 -VCC2 Output (Ch.2) Linear Feedback (Ch.2) Linear Feedback (Ch.2) Phase Compensation (Ch.2) Phase Compensation (Ch.2) N.F.B (Ch.2) Input (Ch.2) -VCC1 Pin Name |
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