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| ICs for Audio Common Use AN7196K Dual 15 W BTL power IC for car audio s Overview The AN7196K is an audio power IC developed for the sound output of car audio (dual 15 W). Especially, this circuit has solved the problem of heat radiation design inherent to a single chip IC with 4-channel audio ouputs and realized a corresponding space saving at the same time. In addition, it is incorporating various protection circuits to protect the IC from destruction by GND-open short-circuit to GND and power supply surge which are the most important subjects of power IC protection, and the IC will largely contribute to a high reliability design of equipment. It is also incorporating the industry's first perfect muting circuit, which is free from shock noise, so that a shock noise design under the set transient condition can be made easily when the muting circuit is used together with its standby function. The AN7196K is pin compatible with the AN7191NK (dual 20 W), so that the identical pattern design is allowed for high-class types as well as popular types. 11.30.3 7.70.3 Unit : mm 16 0.6 +0.15 -0.10 (1.1) (10.0) 29.750.3 28.00.3 20.00.3 (0.889) 3.6 R1.8 (0.6) 1.788 (0.889) (10.0) 1.450.15 1 1.2+0.1 (12.5) 3.50.2 R0.7 (1.2) (14.1) (17.63) (18.7) (21.5) 0.25 -0.05 +0.10 HZIP016-P-0665A s Features * Built-in various protection circuits (realizing high breakdown voltage against destruction ) Power supply surge breakdown voltage of 100 V or more Ground open breakdown voltage of 16 V or more * Built-in standby function (free from shock noise at standby on/off) * Built-in muting function (the industry's first) Free from shock noise at mute-on/off Adapting attenuator method so that abnormal sound due to waveform deformation is not generated Attack time, recovery time of 50 ms or less * Space saving design is possible with a small size package A heat radiation design that has been a problem particularly in a 4-ch. single chip IC can be done by the conventional method. * Reduction in external components (parts reduction to half compared with the AN7176K) It eliminates the need for NF and BS electrolytic capacitors, Muting function is unnecessary Power supply choke coil is unnecessary * Provided with beep sound input pin * Pin compatible with the AN7191NK (dual 20 W) s Applications * Car audio 1.800.15 (2.54) 29.60.3 1 AN7196K s Block Diagram VCC ICs for Audio Common Use Ripple filter 12 Ref. 14 13 Att. Protection Cct. Att. Ch.1 GND Ch.1 Out (-) 3 4 1 Ch.2 GND Ch.2 Out (-) Ch.1 Out (+) 2 Att. Att.Con. Att. 15 Ch.2 Out (+) 10 11 16 6 5 7 8 Ch.1 In Standby Ch.2 In N.C. s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 Description Power supply Ch.1 output (+) Grounding (output ch.1) Ch.1 output (-) Standby Ch.1 input Muting Grounding (sub) Pin No. 9 10 11 12 13 14 15 16 Description Grounding (input) Beep sound input Ch.2 input Ripple filter Ch.2 output (-) Grounding (output ch.2) Ch.2 output (+) N.C. s Absolute Maximum Ratings Parameter Supply voltage *2 *3 Symbol VCC Vsurge ICC Rating 25 80 9.0 59 -30 to +85 -55 to +150 GND(input) GND(sub) Beep In Mute 9 Unit V V A W C C Peak supply voltage Supply current Power dissipation *4 PD *1 Operating ambient temperature Storage temperature Note) *1 : *2 : *3 : *4 : *1 Topr Tstg All items are at Ta = 25C, except for the operating ambient temperature and storage temperature. Without signal Time = 0.2 s Ta = 85C 2 ICs for Audio Common Use s Recommended Operating Range Parameter Supply voltage Symbol VCC Range 8.0 to 18.0 AN7196K Unit V s Electrical Characteristics at VCC = 13.2 V, f = 1 kHz, Ta = 25C Parameter Quiescent current Standby current Output noise voltage Voltage gain 1 Total harmonic distortion 1 Maximum output power 1 Ripple rejection ratio Channel balance Cross-talk *1 *1 *1 Symbol ICQ ISTB VNO GV1 THD1 PO1 RR CB CT VOff MT Zi GV2 THD2 PO2 VS THD3 Conditions VIN = 0 mV, RL = 4 VIN = 0 mV, RL = 4 Rg = 4.7 k, RL = 4 VIN = 40 mV, RL = 4 PO = 0.5 W, RL = 4 THD = 10%, RL = 4 RL = 4 , Rg = 4.7 k, Vr = 1 V[rms], fr = 1 kHz VIN = 40 mV, RL = 4 VIN = 40 mV, RL = 4 , Rg = 4.7 k Rg = 4.7 k, RL = 4 VIN = 40 mV, RL = 4 VIN = 0.3 VDC VIN = 40 mV, RL = 2 PO = 0.5 W, RL = 2 THD = 10%, RL = 2 RL = 4 , Rg = 4.7 k VSTB = on/off, 50 Hz HPF-on VIN = 10 mV, fIN = 20 kHz Rg = 4.7 k, RL = Min 32 12 60 55 -250 70 22 32 12 -100 Typ 120 1 0.22 34 0.07 14 70 0 65 0 82 28 34 0.1 20 0 0.10 Max 250 10 0.5 36 0.4 1 250 35 36 0.5 Unit mA A mV[rms] dB % W dB dB dB mV dB k dB % W Output offset voltage Muting effect *1 Input impedance Voltage gain 2 Total harmonic distortion 2 Maximum output power 2 Shock noise *2 100 mV[p-0] 0.5 % Total harmonic distortion 3 Note) *1 : Measurement using a bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter. *2 : For VSTB = on/off, change over the standby terminal by the voltages of 0 V and 5 V at the time shown below. Standby terminal voltage 5V 0V 500 ms 500 ms 3 AN7196K s Usage Notes ICs for Audio Common Use 1. Always attach an outside heat sink to use the chip. In addition, the outside heat sink must be fastened onto a chassis for use. 2. Connect the cooling fin to GND potential. 3. Avoid short-circuit to VCC and short-circuit to GND, and load short-circuit. 4. The temperature protection circuit will be actuated at Tj = approx. 150C, but it is automatically reset when the chip temperature drops below the above set level. 5. The overvoltage protection circuit starts its operation at VCC = approx. 20 V. 6. Take into consideration the heat radiation design particularly when VCC is set high or when the load is 2 . 7. When the beep sound function is not used, open the beep sound input pin (pin 10) or connect it to pin 9 with around 0.01 F capacitor. 8. Connect only pin 9 (ground, signal source) to the signal GND of the amplifier in the previous stage. The characteristics such as distortion, etc. will be improved. s Technical Information * PD Ta curves of HZIP016-P-0665A PD T a 65 Infinity heat sink 62.5 60 55 50 Rth (j-c) = 2C/W Rth (j-a) = 42C/W Power dissipation PD (W) 45 41.7 40 1C/W heat sink 35 31.3 2C/W heat sink 30 25 3C/W heat sink 20 5C/W heat sink 17.9 15 10.4 10C/W heat sink 10 5 Without heat sink 3.0 0 0 25 50 75 100 125 150 Ambient temperature Ta (C) 4 ICs for Audio Common Use s Application Circuit Example 12 Ripple filter AN7196K Ch.1 GND 3 1 VCC 14 Ch.2 GND Ch.1 Out (-) 4 13 Ch.2 Out (-) Ch.1 Out (+) 2 Beep In 10 Standby 5 Ch.2 In 11 16 6 7 8 9 GND(input) 15 Ch.2 Out (+) GND(sub) Ch.1 In Mute N.C. 5 |
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