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LM4863MTE bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI) |
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LM4863MTE bảng dữ liệu(HTML) 4 Page - National Semiconductor (TI) |
4 / 16 page Electrical Characteristics for Bridged-Mode Operation (Notes 3, 4) (Continued) The following specifications apply for V DD= 5V unless otherwise specified. Limits apply for TA= 25˚C. Symbol Parameter Conditions LM4863 Units (Limits) Typical Limit (Note 13) (Note 14) X TALK Channel Separation f = 1 kHz, C B = 1.0 µF 90 dB SNR Signal To Noise Ratio V DD = 5V, PO = 1.1W, RL =8Ω 98 dB Electrical Characteristics for Single-Ended Operation (Notes 3, 4) The following specifications apply for V DD= 5V unless otherwise specified. Limits apply for TA= 25˚C. Symbol Parameter Conditions LM4863 Units (Limits) Typical Limit (Note 13) (Note 14) V OS Output Offset Voltage V IN = 0V 5 50 mV (max) P O Output Power THD = 0.5%,f = 1 kHz, R L = 32Ω 85 75 mW (min) THD+N = 1%,f = 1 kHz, R L = 8Ω 340 mW THD+N = 10%,f = 1 kHz, R L = 8Ω 440 mW THD+N Total Harmonic Distortion+Noise A V = −1, PO = 75 mW, 20 Hz ≤ f ≤ 20 kHz, R L = 32Ω 0.2 % PSRR Power Supply Rejection Ratio C B = 1.0 µF, VRIPPLE = 200 mV RMS, f = 1 kHz 52 dB X TALK Channel Separation f = 1 kHz, C B = 1.0 µF 60 dB SNR Signal To Noise Ratio V DD = 5V, PO = 340mW, RL =8Ω 95 dB Note 3: All voltages are measured with respect to the ground pins, 2, 7, and 15, unless otherwise specified. Note 4: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func- tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar- antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. Note 5: The θJA given is for an MXA20A package whose exposed-DAP is soldered to an exposed 2in2 piece of 1 ounce printed circuit board copper. Note 6: The θJA given is for an MXA20A package whose exposed-DAP is not soldered to any copper. Note 7: When driving 3 Ω loads from a 5V supply, the LM4863MTE must be mounted to the circuit board and forced-air cooled (450 linear-feet per minute). Note 8: When driving 4 Ω loads from a 5V supply, the LM4863MTE must be mounted to the circuit board. Note 9: Output power is measured at the device terminals. Note 10: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θ JA, and the ambient temperature TA. The maximum allowable power dissipation is PDMAX = (TJMAX −T A)/θJA. For the LM4863, TJMAX = 150˚C. For the θJAs for different packages, please see the Application Informa- tion section or the Absolute Maximum Ratings section. Note 11: Human body model, 100 pF discharged through a 1.5 k Ω resistor. Note 12: Machine model, 220 pF–240 pF discharged through all pins. Note 13: Typicals are measured at 25˚C and represent the parametric norm. Note 14: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Note 15: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier. Truth Table for Logic Inputs SHUTDOWN HP-IN LM4863 MODE Low Low Bridged Low High Single-Ended High Low LM4863 Shutdown High High LM4863 Shutdown www.national.com 4 |
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