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LM4982 Scheda tecnica(PDF) 4 Page - National Semiconductor (TI) |
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LM4982 Scheda tecnica(HTML) 4 Page - National Semiconductor (TI) |
4 / 21 page Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 4.5V Storage Temperature −65˚C to +150˚C Input Voltage −0.3V to V DD +0.3V Power Dissipation (Note 3) Internally Limited ESD Susceptibility (Note 4) 2000V ESD Susceptibility (Note 5) 200V Junction Temperature 150˚C Thermal Resistance θ JA (typ) - (TLA16XXX) 105˚C/W (Note X) Operating Ratings Temperature Range T MIN ≤ T A ≤ T MAX −40˚C ≤ T A ≤ +85˚C Supply Voltage 1.6V ≤ V DD ≤ 4.0V Audio Amplifier Electrical Characteristics V DD =3V (Notes 1, 2) The following specifications apply for V DD = 3V, RL =16 Ω,A V = 0dB, unless otherwise specified. Limits apply for TA = 25˚C. Symbol Parameter Conditions LM4982 Units (Limits) Typical (Note 6) Limits (Notes 7, 8) I DD Quiescent Power Supply Current Full Power Mode V IN = 0V, inputs terminated, both channels enabled 8.1 11.5 mA (max) V IN = 0V, inputs terminated, one channel enabled 5.1 7.3 mA V IN = 0V, inputs terminated, No headphone inserted 2.15 mA I SD Shutdown Current With SD enabled 0.1 1.5 µA (max) V OS Output Offset Voltage R L =32 Ω 0.7 4.5 mV (max) A V Gain Max and Min settings [B0:B4] = 00000 –70 dB [B0:B4] = 11111 +18 dB R IN Input Resistance gain setting 18dB 22 15 29 k Ω (min) k Ω (max) gain setting –76dB 200 k Ω P OUT Stereo Output Power THD+N = 1% (max); f = 1kHz, R L =16 Ω, per channel 47 40 mW (min) THD+N = 1% (max); f = 1kHz, R L =32 Ω, per channel 51 mW THD+N Total Harmonic Distortion + Noise P O = 50mW, f = 1kHz R L =16 Ω, single channel 0.05 % P O = 50mW, f = 1kHz R L =32 Ω, single channel 0.025 PSRR Power Supply Rejection Ratio Full Power Mode V RIPPLE = 200mVP-P, input referred f = 217Hz 66 56 dB f = 1kHz 55 f = 20kHz 40 SNR Signal-to-Noise-Ratio R L =32 Ω,P OUT = 20mW, f = 1kHz, BW = 20Hz to 22kHz 100 dB T WU Wake Up Time From Shutdown Charge Pump Wake-Up Time 300 µs T WU Wake Up Time Headphone Sense Debounce Time 200 ms X TALK Crosstalk R L =16 Ω,P OUT = 1.6mW, f = 1kHz, A-weighted filter 70 dB Z OUT Output Impedance In Shutdown Mode 180 k Ω I L Input Leakage ±0.1 nA Vih HPS in threshold 0.9xV DD [min] V Vil HPS in threshold 0.7xV DD [max] V www.national.com 4 |
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