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LM4980SD Datenblatt(PDF) 5 Page - National Semiconductor (TI) |
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LM4980SD Datenblatt(HTML) 5 Page - National Semiconductor (TI) |
5 / 20 page Electrical Characteristics V DD = 1.8V (Notes 1, 5) (Continued) The following specifications apply for the circuit shown in Figure 2, unless otherwise specified. A V = 0dB, RL =32 Ω. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4980 Units (Limits) Typical Limit (Note 6) (Note 7) P O Output Power (Note 9) R L =16 Ω, THD+N = 1%, f = 1kHz, per channel 11 mW (min) R L =32 Ω, THD+N = 1%, f = 1kHz, per channel 9 mW (min) V NO Output Voltage Noise 20Hz to 20kHz, A-weighted, Fig. 2 9 µV RMS THD+N Total Harmonic Distortion + Noise R L =32 Ω,P OUT = 10mW, f = 1kHz 0.03 % Crosstalk Freq = 1kHz, P OUT = 9mW, RL =32 Ω 79 dB PSRR Power Supply Rejection Ratio V RIPPLE = 200mVP-P sine wave f RIPPLE = 1kHz, CMIDCAP = 4.7µF, V MID Voltage is Ripple-Free 78 dB V RIPPLE = 200mVP-P sine wave f RIPPLE = 217Hz, CMIDCAP = 4.7µF, V MID Voltage is Ripple-Free 85 dB CMRR Common-Mode Rejection Ratio Input coupling capacitors with 5% tolerance, V IN =VMID, f RIPPLE = 1kHz 47 dB T WAKE-UP Wake-up Time C MIDCAP = 4.7µF, Fig 2. 320 ms V IH Control Logic High 1.5V ≤ V DD ≤ 3.3V 1.4V V (min) V IL Control Logic Low 1.5V ≤ V DD ≤ 3.3V 0.4V V (max) Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee 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 2: The maximum power dissipation is dictated by TJMAX, θJA, and the ambient temperature TA must be derated at elevated temperatures. The maximum allowable power dissipation is PDMAX =(TJMAX −TA)/ θJA. For the LM4980, TJMAX = 150˚C. For the θJAs, please see the Application Information section or the Absolute Maximum Ratings section. Note 3: Human body model, 100pF discharged through a 1.5k Ω resistor. Note 4: Machine model, 200pF – 220pF discharged through all pins. Note 5: All voltages are measured with respect to the ground (GND) pins unless otherwise specified. Note 6: Typicals are measured at 25˚C and represent the parametric norm. Note 7: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. Note 8: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier. Note 9: Output power is measured at the device terminals. www.national.com 5 |
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