AN7164AN7164, Serwisówki TV, Układy Scalone
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ICs for Audio Common Use AN7164 30 W BTL audio power amplifier Overview The AN7164 is an integrated circuit designed for 30 W (V CC = 21 V, 8 W) output power amplifier. High power output (BTL 30 W), low distortion and low noise are re- alized. High reliability is obtained due to various kinds of protectors built in. Furthermore, on-off of output is possible from standby terminal. Unit : mm 7.7±0.3 3.6 R1.8 Features · High power output · Low distortion, Low noise · Low shock noise when power supply is turned-on, off · Built-in standby function · Built-in protection circuits (Temperature, Overcurrent, Load short circuit, Output - GND short circuit) (12.5) (1.2) 19.1±0.3 21.9±0.3 HSIP012-P-0000A Applications · Stereo, Karaoke, TV n Block Diagram 6 Input circuit Driver circuit SEPP output circuit 10 1 Ripple filter Protection circuits for Temp. Overcurrent, Load short, Output-GND short 5 Input circuit Driver circuit SEPP output circuit 7 1 n f n n AN7164 ICs for Audio Common Use n Pin Descriptions Pin No. Description Pin No. Description 1 Ripple filter 7 Output (ch.1) 2 Negative feedback (ch.2) 8 Bootstrap (ch.1) 3 GND (Input side) 9 GND (output side) 4 Negative feedback (ch.1) 10 Output (ch.2) 5 Input 11 Bootstrap (ch.2) 6 Standby 12 Supply voltage (V CC ) n Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage * 2 V CC 30 V Supply current I CC 5.0 A Power dissipation * 3 P D 62.5 W Operating ambient temperature * 1 T opr -30 to +75 °C Storage temperature * 1 T stg -55 to +150 °C Note) * 1: T a = 25°C except power dessipation, operating ambient temperature and storage temperature. * 2 : Without signal * 3: q j-c = 2.0 (°C/W) n Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 8.3 to 24 V n Electrical Characteristics at V CC = 21 V, R L = 8 W , f = 1 kHz, BTL operation, T a = 25 ° C Parameter Symbol Conditions Min Typ Max Unit Quiescent current I CQ V IN = 0 V ¾ 55 100 mA Output noise voltage *1 V NO R g = 10 kW ¾ 0.85 1.3 mV Output offset voltage V OFF SET V IN = 0 V ¾ 0 300 mV Total harmonic distortion THD P O = 1 W ¾ 0.07 0.3 % Voltage gain G V P O = 1 W 49.5 51.5 53.5 dB Maximum output power P O THD = 10% 24 30 ¾ W Ripple rejection ratio *1, 2 R.R. R g = 0 W, power supply ripple 45 51 ¾ dB Standby current I STB Pin 6 open ¾¾ 3 mA Note) *1 : Measurement through the DIN audio filter. *2 : Power supply ripple ······ 120 Hz Sine wave, 1V[rms] 2 ICs for Audio Common Use AN7164 Usage Notes Standby-on (i.e. an application of 5 V to pin 6) under a high temperature may cause no-output due to the malfunction of rapid discharging circuit of the ripple filter. To avoid this, it is necessary to forcibly flow a current of 1 mA into pin 1 at standby-on. n Technical Information · P D ¾ T a curves of HSIP012-P-0000A P D ¾ T a 65 62.5 Infinite heat sink R th (j-c) = 2°C/W R th (j-a) = 42°C/W 60 55 50 45 1 ° C/W heat sink 41.7 40 35 2 ° C/W heat sink 31.3 30 25 3°C/W heat sink 17. 20 5°C/W heat sink 15 10. 10 10°C/W heat sink 3.0 5 Without heat sink 0 0 25 50 75 100 125 150 Ambient temperature T a (°C) n Application Circuit Example 2 kW V CC = 21 V 100 mF 1 000 mF 2 11 0.047 m F 100 mF 100 mF 10 220 W 4 2.2 W 1 m F 0.1 mF 8 W 5 V IN 7 100 mF 2.2 W 3 8 0.1 mF 0V 5V 3 n [ Pobierz całość w formacie PDF ] |
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