Datenblatt-Suchmaschine für elektronische Bauteile |
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TDA7482 Datenblatt(PDF) 3 Page - STMicroelectronics |
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TDA7482 Datenblatt(HTML) 3 Page - STMicroelectronics |
3 / 7 page 3/7 TDA7482 Table 5. Electrical Characteristcs (Refer to the test circuit, VCC = ±21V; RL = 8Ω; RS = 50Ω; RF = 12KΩ; Demod.. filter L = 60µH, C = 470nF; f = 1KHz; Tamb = 25°‘C unless otherwise specified.) *: The output LC filtermust be changed to: L = 30 µH; C = 1µF **: PO = measured across the load using the following inductor: COIL 58120 MPPA2 (magnetics) TURNS: 28 φ 1mm ***: The zero-signal switching frequency can be obtained using the following expression: FSW= BF/RF ****: The maximum value of RF is related to the maximum possible value for the voltage drop on RF itself (1) For V10 >5.2V, an input impedance of 10K Ω is to be considered Symbol Parameter Test Condition Min. Typ. Max. Unit VS Supply Range ±10 ±25 V Iq Total Quiescent Current RL = ∞, No LC Filter 40 60 mA VOS Output Offset Voltage Play Condition –70 -30 10 mV PO Output Power THD = 10% THD = 1% 20 14 25 18 W W PO Output Power RL = 4Ω ; VCC = ±16V; THD = 10% THD = 1% (*) 25 18 W W PD Maximum Dissipated Power VCC =±21V; RL = 8Ω; PO = 25W THD 10% 3.8 W η Efficiency ≡ (∗∗) VCC = ±21V; RL = 8Ω; PO = 18W THD 10% 87 % ηmax Top Efficiency maximum VCC = ±25V; RL = 8Ω; PO = 43W THD 20% 88.5 % THD Total Harmonic Distortion RL = 8Ω; PO = 1W 0.1 % Imax Overcurrent Protection Threshold RL = 0 3.5 5 A Tj Thermal Shut-down Junction Temperature 150 °C GV Closed Loop Gain 29 30 31 dB eN Total Input Noise A Curve f = 20Hz to 22KHz 7 12 µV µV VCCTOT MAX Maximum Total VCC Protection 50 V Ri Input Resistance 20 30 k Ω SVR Supply Voltage Rejection f = 100Hz; Vr = 0.5 46 60 dB Tr, Tf Rising and Falling Time 50 ns RDSON Power Transistor on Resistance 0.4 Ω FSW-OP Switching Frequency Operative Range 100 200 KHz FSW Switching Frequency 100 120 140 KHz BF Zero Signal Frequency Constant (***) 1.4x109 Hz Ω RF Frequency Controller Resistor Range (****) 712 14 K Ω MUTE & STAND-BY FUNCTIONS VST-BY Stand-by range 0.8 V VMUTE Mute Range 1.8 2.5 V VPLAY Play Range (1) 4 V AMUTE Mute Attenuation 60 80 dB IqST-BY Quiescent Current @ Stand-by 3 5 mA P o P O P D + --------------------- P o P I ------ ≡ |
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