AN7561ZAN7561Z, Serwisówki TV, Układy Scalone
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ICs for Audio Common Use AN7561Z BTL output power IC for car audio Overview The AN7561Z is an audio power IC developed as a car audio output (35 W ´ 4-ch). CR to stop oscillation is built in between the output pin and GND so that a space sav- ing of set is possible. Also, it is incorporating a perfect muting circuit which does not make a shock noise so that a shock noise design in the set transitional state can be made easily when used together with its standby func- tion. In addition, it is incorporating various protective circuits to protect the IC from destruction by GND-open earth short-circuiting and power supply surge which are the important subject of power IC, and the IC will largely contribute to a high reliability design of equipment. Unit: mm 31.0±0.3 27.0±0.3 4. 5±0 .2 21.0±0.1 1.5±0.1 (10.50) (10.50) f 3.6±0.1 R1.8±0.1 1 25 (1.26) 1.27 0.6 +0.2 –0.1 (5.08) (4.29) 0.40 +0.15 –0.05 Seating plane 33.0±0.3 33.36±0.30 Features · Pin arrangement which does not allow the input/output patterns to intersect each other so that it is possible to make a pattern design on a one-sided printed circuit board. · Incorporating various protection circuits (thermal pro- tection, short-circuit to V CC , short-circuit to V CC in V CC - opened, short-circuit to GND, short-circuit to GND in GND-opened, over voltage, power supply surge, and ASO protection, etc.) · Incorporating standby function (shock noise-free at STB- on/off) · Incorporating standby function (shock noise-free at Mute-on/off) · External components reduction · Provided with beep sound input pin · Equipped with auxiliary sound input pin · Inverted pin layout of AN7560Z on right and left pins HZIP025-P-0980 Applications · Car stereo, miniature audio component, karaoke and other audio equipment. 1 n n n AN7561Z ICs for Audio Common Use n Block Diagram 1 Ripple Filter 10 25 17 Protection Circuit GND (Output) 24 23 18 GND (Output) 15 Beep Input 21 13 GND (Output) 20 19 Attenuation Control 12 11 GND (Output) Attenuator AUX Input Attenuator n Pin Descriptions Pin No. Description Pin No. Description 1 Ripple filter 14 Supply voltage V CC 2 Mute 15 ch.2 - output 3 ch.3 input 16 AUX input 4 GND (Sub) 17 ch.2 + output 5 ch.4 input 18 GND (ch.2 output) 6 GND (Input) 19 ch.3 - output 7 ch.2 input 20 GND (ch.3 output) 8 Beep input 21 ch.3 + output 9 ch.1 input 22 Supply voltage V CC 10 Standby 23. ch.4 - output 11 ch.1 - output 24 GND (ch.4 output) 12 GND (ch.1 output) 25 ch.4 + output 13 ch.1 + output Note) The output pin requires no capacitor and resistor for oscillation prevention. If those are required for countermeasure against noise, be sure to use after confirmation. 2 ICs for Audio Common Use AN7561Z n Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage * 2 V CC 25 V Peak power-supply-voltage * 3 V Surge 65 V Supply current I CC 12 A Power dissipation * 4 P D 59 W Operating ambient temperature * 1 T opr -30 to +85 °C Storage temperature * 1 T stg -55 to +150 °C Note) * 1 :T a C except power dissipation, operating ambient temperature and storage temperature. * 2 : Without signal * 3 : Time = 25 ° = 0.2 s * 4 :T a = 85 ° C n Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 8.0 to 18.0 V n Electrical Characteristics at V CC = 13.2 V, freq = 1 kHz, T a = 25 ° C Parameter Symbol Conditions Min Typ Max Unit Quiescent circuit current I CQ R G = 10 kW, R L = 4 W ¾ 300 450 mA Standby current I STB R G = 10 kW, R L = 4 W ¾ 1 10 mA Output noise voltage * 1 V NO R G = 10 kW, R L = 4 W ¾ 0.15 0.5 mV[rms] Voltage gain G V V IN = 40 mV, R L = 4 W 32 34 36 dB Total harmonic distortion 1 THD1 V IN = 40 mV, R L = 4 W ¾ 0.05 0.2 % Maximum output power P O THD = 10%, R L = 4 W 16.0 19.5 ¾ W Ripple rejection ratio * 1 RR R L = 4 W, R G = 10 kW, 60 68 ¾ dB V R = 1 V[rms], fr = 1 kHz Channel balance CB V IN = 40 mV, R L = 4 W ¾ 0 1 dB Crosstalk CT V IN = 40 mV, R L = 4 W 60 70 ¾ dB R G = 10 kW Output offset voltage V OFF R G = 10 kW, R L = 4 W -250 0 250 mV Muting effect * 1 MT V IN = 40 mV, R L = 4 W 70 86 ¾ dB Input impedance Z I V IN = ±0.3 V DC 24 30 36 kW Shock noise * 2 V S R L = 4 W, R G = 10 kW, -100 0 100 mV[p-0] V MUTE = 5 V, V STB = On/Off 50 Hz HPF Note) * 1 : Use 15 Hz to 30 kHz (12 dB/OCT) band-pass filter at measurement. * 2 : Change over the standby pin at 0V and 5V with the following time. Standby pin voltage 5 V 0 V 500 ms 500 ms 3 AN7561Z ICs for Audio Common Use n Electrical Characteristics at V CC = 9 V, T a = 25 ° C (continued) Parameter Symbol Conditions Min Typ Max Unit Total harmonic distortion 2 THD2 V IN = 20 mV, f IN = 20 kHz, ¾ 0.1 0.5 % R G = 10 W, R L = ¥ Mute-on threshold voltage MT ON V IN = 40 mV, R L = 4 W 4 ¾¾ V Mute-off threshold voltage MT OFF V IN = 40 mV, R L = 4 W ¾ ¾ 0.8 V Cutoff frequency f C V IN = 40 mV, R L = 4 W 20 40 ¾ kHz G V = -1 dB (0 dB: 1 kHz) · Design reference data at V CC = 13.2 V, f = 1 kHz, measuring bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter is used Note) The characteristic values below are theoretical values for designing and not guaranteed. Parameter Symbol Conditions Min Typ Max Unit Maximum output power P Omax max. power, R L = 4 W ¾ 28 ¾ W Maximum output power P O2 V CC = 14.4 V, THD = 10%, ¾21 ¾ W R L = 4 W Maximum output power P Omax2 V CC = 14.4 V, max. power, ¾34 ¾ W R L = 4 W Power band f PL V CC = 14.4 V, THD = 1%, ¾ 10 ¾ Hz R L = 4 W, P OL = -3 dB (1 kHz: 0 dB) Power band f PH V CC = 14.4 V, THD = 1%, ¾ 18 ¾ kHz R L = 4 W, P OH = -3 dB (1 kHz: 0 dB) STB threshold voltage V STB1 R G = 10 kW, R L = 4 W, ¾ 2.2 ¾ V STB®ACT STB threshold voltage V STB2 R G = 10 kW, R L = 4 W, ¾ 1.5 ¾ V ACT®STB 4 ICs for Audio Common Use AN7561Z n Terminal Equivalent Circuits Pin No. Equivalent circuit Description DC Voltage 1 Ripple filter pin: 13 V V CC Output current from 3 mA to 10mA 15 kW 1 350 mA 1.7 mA 20 kW 2 Mute pin: 0 V 2 Mute switchover pin Threshold voltage about 2.1 V 200 W 100 kW 10 kW 3 ch.3 input pin: 0 mV to 10 mV 3 ch.3 input signal application pin Input impedance 30 kW 200 W abt. 15 mA abt. 15 mA 600 W 30 k W 4 ¾ GND (circuit board): Circuit board 0 V 5 5 ch.4 input pin: 0 mV to 10 mV ch.4 input signal application pin Input impedance 30 kW 200 W abt. 15 mA abt. 15 mA 600 W 30 kW 5 [ Pobierz całość w formacie PDF ] |
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