データシートサーチシステム |
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LM4931 データシート(PDF) 6 Page - National Semiconductor (TI) |
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LM4931 データシート(HTML) 6 Page - National Semiconductor (TI) |
6 / 48 page Electrical Characteristics DV DD = 3V, AVDD = 3V, RLHP =32Ω,RLHF =8Ω (Notes 1, 2) (Continued) The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4931 Units (Limits) Typical (Note 6) Limits (Note 7) f MCLK = 12MHz, PLL active 70 dB SNR (Music) Signal-to-Noise Ratio of Music Channel (Loudspeaker Amplifier) Output Noise Signal = V O at 0dBFS, f = 1kHz, Noise = digital zero, A-weighted, 0dB gain setting (Note 10) f MCLK = 12.288MHz, PLL disabled 78 dB f MCLK = 12MHz, PLL active 76 dB e N (Music) Output Noise A-weighted filter, V in = digital zero (Note 10) f MCLK = 12.288MHz, PLL disabled 120 µV f MCLK = 12MHz, PLL active 140 µV V OS Offset Voltage 10 mV VCR Volume Control Range (Loudspeaker Amplifier) Minimum Gain –34.5 dB Maximum Gain 12 dB SS Volume Control Step Size (Loudspeaker Amplifier) 1.5 dB Headphone Amplifier V FS Full Scale Ouput Voltage (Headphone Amplifier) 32 Ω load, 0dB gain setting 2.6 V P-P THD+N Total Harmonic Distortion + Noise (Headphone Amplifier) f IN = 1kHz, POUT = 7.5mW, 32 Ω stereo load 0.04 % P OHP Output Power (Headphone Amplifier) THD = 0.5%, f OUT = 1KHz 26 19 mW (min) PSRR Power Supply Rejection Ratio (Headphone Amplifier) C B = 1.0µF V RIPPLE = 200mVPP f RIPPLE = 217Hz 62 dB SNR (Voice) Signal-to-Noise Ratio of Voice Channel (Headphone Amplifier) Signal = V O at 0dBFS, f = 1kHz and 1% THD+N, Noise = digital zero, A-weighted, 0dB gain setting (Note 10) f MCLK = 12.288MHz, PLL disabled 75 dB f MCLK = 12MHz, PLL active 73 dB SNR (Music) Signal-to-Noise Ratio of Music Channel (Headphone Amplifier) Signal = V O at 0dBFS, f = 1kHz and 1% THD+N, Noise = digital zero, A-weighted, 0dB gain setting (Note 10) f MCLK = 12.288MHz, PLL disabled 86 dB f MCLK = 12MHz, PLL active 82 dB X TALK Stereo Channel-to-Channel Crosstalk f S = 48kHz, f IN = 1kHz sinewave at –3dBFS 62 dB ∆A CH-CH Stereo Channel-to-Channel Gain Mismatch 0.3 dB e N (Music) Output Noise A-weighted filter, Vin = digital zero (Note 10) f MCLK = 12.288MHz, PLL disabled 45 µV f MCLK = 12MHz, PLL active 65 µV www.national.com 6 |
同様の部品番号 - LM4931 |
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同様の説明 - LM4931 |
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