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TDA7498E 데이터시트(PDF) 8 Page - STMicroelectronics |
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TDA7498E 데이터시트(HTML) 8 Page - STMicroelectronics |
8 / 20 page Electrical specifications TDA7498E 8/20 Doc ID 022595 Rev 1 3.4 Electrical specifications Unless otherwise stated, the values in the table below are specified for the conditions: VCC =36V, RL = 4 Ω, ROSC = R3 = 39 kΩ, C8 = 100 nF, f = 1 kHz, GV = 23.6 dB Tamb = 25 °C. Table 6. Electrical specifications Symbol Parameter Condition Min Typ Max Unit Iq Total quiescent current No LC filter, no load - 60 mA IqSTBY Quiescent current in standby - - 1 µA VOS Output offset voltage Vi = 0 Av = 23.6 dB, no load -20 - 20 mV IOCP Overcurrent protection threshold RL = 0 Ω 10 11 14 A Tj Junction temperature at thermal shutdown - 140 150 160 °C Ri Input resistance Differential input 69 - k Ω VUVP Undervoltage protection threshold - - - 8 V RdsON Power transistor on resistance High side - 0.15 - Ω Low side - 0.15 - Po Output power THD = 10% - 160 - W THD = 1% - 125 - Po Parallel BTL (mono) output power, RL = 3 ohm, Vcc = 36 V THD = 10% - 220 - W THD = 1% - 170 - η Efficiency - 85 - % THD Total harmonic distortion Po = 1 W - 0.05 - % GV Closed-loop gain GAIN0 < 0.25*VDD 23.8 dB 0.25*VDD < GAIN < 0.5*VDD 29.8 0.5*VDD < GAIN < 0.75*VDD 33.3 GAIN > 0.75*VDD 35.8 ΔGV Gain matching - -1 - 1 dB CT Crosstalk f = 1 kHz, Po = 1 W 50 60 - dB Vn Total output noise Inputs shorted and to Ground A curve 231 µV Inputs shorted and to Ground f = 20 Hz to 20 kHz 400 µV SVRR Supply voltage rejection ratio fr = 100 Hz, Vr = 0.5 Vpp, CSVR = 10 µF -55 - dB Tr, Tf Rise and fall times - - 35 - ns fSW Switching frequency Internal oscillator 240 310 400 kHz fSWR Output switching frequency range With internal oscillator by changing Rosc(1) 240 - kHz |
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