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LM4961 Fiches technique(PDF) 4 Page - National Semiconductor (TI) |
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LM4961 Fiches technique(HTML) 4 Page - National Semiconductor (TI) |
4 / 16 page Electrical Characteristics V DD = 3.2V (Continued) The following specifications apply for V DD = 3.2V, AV-BTL = 26dB, RL = 2µF+30 Ω, Cb = 1.0µF, Band-SW = V DD unless other- wise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4961 Units (Limits) Typical (Note 6) Limit (Notes 7, 8) V LH Logic High Threshold Voltage For Shutdown 1, Shutdown 2, and Band-SW 1.5 V (min) V LL Logic Low Threshold Voltage For Shutdown 1, Shutdown 2, and Band-SW 0.4 V (max) R PULLDOWN Pulldown Resistor For Shutdown 2 and Band-SW 70k 50k Ω (min) TSD Thermal Shutdown Temperature 125 ˚C (min) V out Output Voltage Swing THD = 1%, f = 1kHz R L = 2µF+30 Ω Mono BTL 15 14 Vp-p (min) THD+N Total Harmomic Distortion + Noise V out = 14Vp-p, f = 1kHz 0.1 1.0 % (max) e OS Output Noise A-Weighted Filter, V IN = 0V (Note 10) 125 µV PSRR Power Supply Rejection Ratio V RIPPLE = 200mVp-p, f = 100Hz 80 65 dB (min) Ron-sw-out On Resistance on SW-Out Band SW “High” Isink = 100µA (Between pin 1 and pin 28) 170 220 Ω (max) Note 1: All voltages are measured with respect to the GND pin, unless otherwise specified. Note 2: 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 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX =(TJMAX −TA)/ θJA or the given in Absolute Maximum Ratings, whichever is lower. For the LM4961 typical application (shown in Figure 1) with VDD = 4.2V, RL = 2µF+30Ω mono BTL operation the maximum power dissipation is 232mW. θJA = 66˚C/W. Note 4: Human body model, 100pF discharged through a 1.5k Ω resistor. Note 5: Machine Model, 220pF–240pF discharged through all pins. Note 6: Typicals are measured at 25˚C and represent the parametric norm. Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. Note 9: Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to GND for minimum shutdown current. Note 10: Noise measurements are dependent on the absolute values of closed loop gain setting resistors (input and feedback resistors). www.national.com 4 |
Numéro de pièce similaire - LM4961 |
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Description similaire - LM4961 |
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