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LM4921 Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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LM4921 Datasheet(HTML) 6 Page - National Semiconductor (TI) |
6 / 18 page Electrical Characteristics DV DD = 3.0V, AVDD = 3.0V, RL =32Ω (Notes 1, 2) The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4921 Units (Limits) Typical Limit (Note 6) (Notes 7, 9) DV DD Digital Power Supply Voltage Note 8 3.0 V AV DD Analog Power Supply Voltage Note 8 3.0 V DI DD Digital Power Supply Quiescent Current R Load = ∞,fMLCK = 11.2896MHz 3.5 7.5 mA (max) AI DD Analog Power Supply Quiescent Current R Load = ∞,fMCLK = 0MHz 5 9.0 mA (max) I SD Total Shutdown Power Supply Current SHUTDOWN SPI bits1&2set to logic 0, SPI, M CLK and I 2S inputs at GND 1 uA(max) I SB Standby Current Analog and Digital together All clocks off 15 uA V FS Full-Scale Output Voltage Gain set at max 2.6 V P-P THD+N Total Harmonic Distortion + Noise f IN = 1kHz, POUT = 12mW (Vol Cont = 11011, I 2S input adj to get 12mW at output) 0.05 % P O Headphone Amplifier Output Power THD = (0.5%), f OUT = 1kHz 26 mW (min) PSRR Power Supply Rejection Ratio AV DD CBYPASS = 2.0µF V RIPPLE = 200mVP-P 217Hz 52 dB (min) SNR Signal-to-Noise Ratio f IN = 1kHz sinewave at -60dBFS, A-weighted-f CONV = 44.1kHz 79 dB DR Dynamic Range f IN = 1kHz sinewave at -60dBFS, A-weighted 81 dB ∆A CH-CH Channel-to-Channel Gain Mismatch f IN = 1kHz 0.06 dB X TALK Channel-to-Channel Crosstalk f CONV = 44.1kHz, f IN = 1kHz sinewave at -3dBFS 72 dB Volume Control Range Minimum Attenuation Maximum Attenuation 0 -43.5 dB dB Volume Control Control Step Size 1.5 dB Mute Attenuation -100 dB www.national.com 6 |
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