ICs for Audio Common Use AN7196K Dual 15 W BTL power IC for car audio ■ Overview Unit : mm φ3.6 29.6±0.3 1.788 (0.889) 1.45±0.15 0.25 -0.05 +0.10 R0.7 (1.2) (14.1) (17.63) (18.7) (21.5) 3.5±0.2 (2.54) 1 (12.5) 1.80±0.15 (10.0) R1.8 (0.6) 1.2+0.1 (1.1) (0.889) (10.0) 0.6 +0.15 -0.10 16 11.3±0.3 7.7±0.3 29.75±0.3 28.0±0.3 20.0±0.3 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. HZIP016-P-0665A ■ 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) ■ Applications • Car audio 1 ICs for Audio Common Use Ripple filter AN7196K 1 12 VCC ■ Block Diagram 3 Ch.1 GND 14 Ref. 4 Ch.1 Out (−) 13 Protection Cct. Att. 15 Att.Con. Ch.2 Out (+) GND(input) 9 16 N.C. Ch.2 In Mute 11 Att. 7 5 Standby 6 Ch.1 In Beep In GND(sub) 8 10 Att. Ch.2 Out (−) Att. 2 Ch.1 Out (+) Ch.2 GND ■ Pin Descriptions Pin No. Description Pin No. Description 1 Power supply 9 Grounding (input) 2 Ch.1 output (+) 10 Beep sound input 3 Grounding (output ch.1) 11 Ch.2 input 4 Ch.1 output (−) 12 Ripple filter 5 Standby 13 Ch.2 output (−) 6 Ch.1 input 14 Grounding (output ch.2) 7 Muting 15 Ch.2 output (+) 8 Grounding (sub) 16 N.C. ■ Absolute Maximum Ratings Parameter Supply voltage *2 Peak supply voltage *3 Supply current Power dissipation *4 Operating ambient temperature Storage temperature Note) *1 : *2 : *3 : *4 : 2 *1 *1 Symbol Rating Unit VCC 25 V Vsurge 80 V ICC 9.0 A PD 59 W Topr −30 to +85 °C Tstg −55 to +150 °C All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature. Without signal Time = 0.2 s Ta = 85°C ICs for Audio Common Use AN7196K ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit VCC 8.0 to 18.0 V ■ Electrical Characteristics at VCC = 13.2 V, f = 1 kHz, Ta = 25°C Parameter Symbol Quiescent current Standby current Output noise voltage *1 Voltage gain 1 Conditions Min Typ Max Unit ICQ VIN = 0 mV, RL = 4 Ω 120 250 mA ISTB VIN = 0 mV, RL = 4 Ω 1 10 µA VNO Rg = 4.7 kΩ, RL = 4 Ω 0.22 0.5 mV[rms] GV1 VIN = 40 mV, RL = 4 Ω 32 34 36 dB Total harmonic distortion 1 THD1 PO = 0.5 W, RL = 4 Ω 0.07 0.4 % Maximum output power 1 PO1 THD = 10%, RL = 4 Ω 12 14 W RR RL = 4 Ω, Rg = 4.7 kΩ, Vr = 1 V[rms], fr = 1 kHz 60 70 dB CB VIN = 40 mV, RL = 4 Ω 0 1 dB CT VIN = 40 mV, RL = 4 Ω, Rg = 4.7 kΩ 55 65 dB VOff Rg = 4.7 kΩ, RL = 4 Ω −250 0 250 mV MT VIN = 40 mV, RL = 4 Ω 70 82 dB VIN = ± 0.3 VDC 22 28 35 kΩ VIN = 40 mV, RL = 2 Ω 32 34 36 dB Ripple rejection ratio *1 Channel balance Cross-talk *1 Output offset voltage Muting effect *1 Input impedance Zi Voltage gain 2 GV2 Total harmonic distortion 2 THD2 PO = 0.5 W, RL = 2 Ω 0.1 0.5 % Maximum output power 2 PO2 THD = 10%, RL = 2 Ω 12 20 W VS RL = 4 Ω, Rg = 4.7 kΩ VSTB = on/off, 50 Hz HPF-on −100 0 100 mV[p-0] 0.10 Shock noise *2 Total harmonic distortion 3 THD3 VIN = 10 mV, fIN = 20 kHz Rg = 4.7 kΩ, RL = ∞ 0.5 % 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 ICs for Audio Common Use ■ Usage Notes 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. 150°C, 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 Ω. 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 µF 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. ■ Technical Information • PD Ta curves of HZIP016-P-0665A PD T a 65 Infinity heat sink 62.5 60 Rth (j−c) = 2°C/W Rth (j−a) = 42°C/W 55 Power dissipation PD (W) 50 45 41.7 40 1°C/W heat sink 35 31.3 2°C/W heat sink 30 25 3°C/W heat sink 20 5°C/W heat sink 17.9 15 10.4 10°C/W heat sink 10 5 Without heat sink 3.0 0 0 25 50 75 100 Ambient temperature Ta (°C) 4 125 150 ICs for Audio Common Use AN7196K 1 VCC 12 Ripple filter ■ Application Circuit Example 15 Ch.2 Out (+) GND(input) N.C. Mute Ch.1 In GND(sub) 9 2 16 Ch.1 Out (+) Ch.2 In 11 13 Ch.2 Out (−) 7 4 Standby 5 Ch.1 Out (−) 6 14 Ch.2 GND Beep In 10 3 8 Ch.1 GND 5