AN7194

ICs for Audio Common Use AN7194K, AN7194Z Dual BTL 50 W single power supply class-H power amplifier IC s Overview The AN7194K and AN7194Z are single power supply, BTL, audio class-H power amplifier ICs. A class-H power amplifier can be made up when this ICs are used in combination with the AN7077Z which is separately market-available, and it is possible to make a low consumption power system. Also, the AN7194K and AN7194Z are incorporating various protection circuits, so that those ICs contribute to the high reliability design of set. AN7194K 11.3±0.3 7.7±0.3 16 0.6 +0.15 -0.10 (10.0) 29.75±0.3 28.0±0.3 20.0±0.3 (0.889) φ3.6 (1.1) R1.8 (0.6) 1.788 (0.889) (10.0) 1.45±0.15 1 1.2+0.1 (12.5) 3.5±0.2 • Incorporating various protection circuits : Thermal protection, load short-cirucit, short circuit to VCC and short circuit to GND, overvoltage. • Built-in stand-by function (Free from shock noise when standby turns-on/off) • Built-in muting function Free from shock noise at mute-on/off Adapting attenuator method so that abnormal sound is not generated due to waveform deformation Attack time, recovery time are 20 ms or less • Reduction in external components NF and BS electrolytic capacitors are needless RF electrolytic capacitor is needless External muting function is needless • OR output terminal is provided • Designed for headphone use • The AN7194K is of a 16-pin and the AN7194Z is of a 15-pin package (1.2) (14.1) (17.63) (18.7) (21.5) 0.25 -0.05 HZIP016-P-0665B AN7194Z 10.0±0.30 15 (0.61) +0.20 0.50–0.10 1.80±0.15 s Features R0.7 +0.10 (2.54) 29.6±0.3 18.00±0.30 13.50±0.30 φ3.60±0.10 1.50±0.10 1 (1.80) 4.00±0.20 3.25±0.10 13.25±0.30 15.65±0.50 18.95±0.50 2.40±0.50 R0.55 HZIP015-P-0745A s Applications • Miniature audio component, CD player radio cassette, karaoke are other audio equipment (1.95) 0.25–0.05 +0.15 (2.54) 19.00±0.30 19.30±0.30 1.27 1 AN7194K, AN7194Z 1/2 VCC ICs for Audio Common Use s Block Diagram 8 9 12 OR 2 34 dB 4 34 dB 3 5 6 1 VCC Ripple filter 34 dB 15 13 1/2 11 7 34 dB 10 GND 14 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 (+) Stand-by Ch.1 input Muting Middle point (1/2 VCC) Pin No. 9 10 11 12 13 14 15 16 OR output GND Ch.2 input N.C. Ch.2 output (+) Grounding (output ch.2) Ch.2 output (−) N.C. (for the AN7194K only) Description s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 Symbol VCC ICC PD *1 Rating 26 9.0 AN7194K AN7194Z 37.5 68.2 −25 to +75 −55 to +150 GND Unit V A W °C °C Operating ambient temperature Storage temperature *1 Topr Tstg Note) *1 : All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature. *2 : The value when Rth(j-c) = 1.1°C/W, and Ta = 75°C s Recommended Operating Range Parameter Supply voltage 2 Symbol VCC Range 6.0 to 24.0 Unit V ICs for Audio Common Use s Electrical Characteristics at VCC = 12 V, f = 1 kHz, Ta = 25°C Parameter Quiescent current Standby current Output noise voltage Voltage gain Total harmonics distortion Maximum output power 1 Maximum output power 2 Ripple rejection ratio Channel balance *1 Cross-talk *1 *1 *2 *1 AN7194K, AN7194Z Symbol ICQ ISTB VNO GV THD PO1 PO2 RR CB CT VOFF MT ICQ-STB Conditions VIN = 0 mV, RL = 6 Ω VIN = 0 mV, RL = 6 Ω RG = 10 kΩ, RL = 6 Ω VIN = 24.5 mV, RL = 6 Ω VIN = 24.5 mV, RL = 6 Ω THD = 10%, RL = 6 Ω THD = 10%, RL = 6 Ω RL = 6 Ω, RG = 10 kΩ VR = 1 V[rms], fR = 1 kHz VIN = 24.5 mV, RL = 6 Ω VIN = 24.5 mV, RL = 6 Ω, RG = 10 kΩ RG = 10 kΩ, RL = 6 Ω VIN = 24.5 mV, RL = 6 Ω VIN = open, VSTB = 5 V Min    38  8 30 45 −1 50 −300 60  Typ 150 1 0.22 40 0.2 10 44 60 0 60 0 82  Max 250 10 0.5 42 0.6    1  300  50 Unit mA µA mV[rms] dB % W W dB dB dB mV dB µA Output offset voltage Muting effect *1 Standby terminal voltage Note) *1 : Measurement using a bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter. *2 : VCC = 24 V s Usage Notes 1. Always attach an outside heat sink when using 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. However, 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. 26 V. 6. For the standby voltage, a stabilized power supply of 3 V or higher should be used. 7. Only when being used in combination with the AN7077Z, this IC can operate up to the supply voltage of approx. 25.4 V which is the maximum output voltage of the AN7077Z. 3 AN7194K, AN7194Z s Technical Information • PD  Ta curves of packages ICs for Audio Common Use Note) After fixing all of the lead wires to printed circuit board by soldering, use the IC after fixing the printed circuit board and the cooling fin of the IC. • AN7194K (HZIP016-P-0665B) PD  T a 85 80 75 70 65 Infinity heat sink 62.5 60 5 50 45 41.7 1°C/W heat sink 40 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 2.6 0 0 25 50 Rth (j−c) = 2°C/W • AN7194Z (HZIP015-P-0745A) PD  T a 85 80 75 70 Infinity heat sink 68.2 65 1°C/W heat sink 60 5 50 45 41.0 2°C/W heat sink 40 35 31.5 30 25 21.7 20 3°C/W heat sink 5°C/W heat sink Rth (j−c) = 1.1°C/W Rth (j−a) = 68.3°C/W Rth (j−a) = 48°C/W Power dissipation PD (W) Power dissipation PD (W) 15 10°C/W heat sink 12.7 10 5 0 75 100 125 150 0 25 50 75 100 125 150 Ambient temperature Ta (°C) Ambient temperature Ta (°C) s Application Circuit Example 8 9 12 1 47 µF 2 2.2 Ω 0.22 µF 4 2.2 Ω 0.22 µF 11 10 14 3 5 6 7 15 2.2 Ω 0.22 µF 13 2.2 Ω 0.22 µF 150 kΩ 4.7 kΩ 10 kΩ 10 kΩ 10 µF STB VIN1 VIN2 5 V ± 0.5 V VTH = 3.5 V 4 Mute 5 V ± 0.5 V VTH = 2.8 V 10 µF