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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LM4931 bảng dữ liệu(PDF) 10 Page - National Semiconductor (TI) |
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LM4931 bảng dữ liệu(HTML) 10 Page - National Semiconductor (TI) |
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10 / 48 page  Electrical Characteristics DV DD = 3.3V, AVDD = 5V, 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) 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 V IN = digital zero (Note 10) f MCLK = 12.288MHz, PLL disabled 45 µV f MCLK = 12MHz, PLL active 70 µV VCR Volume Control Range (Headphone Amplifier) Minimum Gain -46.5 dB Maximum Gain 0 dB SS Volume Control Step Size (Headphone Amplifier) 1.5 dB Microphone Amplifier V BIAS Mic Bias Voltage 2 V GCR Gain Control Range (Microphone Amplifier) Minimum Gain 6 dB Maximum Gain 36 dB SS Gain Control Step Size 2 dB Voice Codec (Typical numbers arew ith 1.024MHz voice clock and 8kHz sampling frequency R VDAC Voice DAC Ripple 300Hz - 3.3kHz through headphone output +/-0.15 dB R VADC Voice ADC Ripple 300Hz - 3.3kHz through headphone output +/-0.25 dB PB VDAC Voice DAC Passband –3dB Point 3.46 kHz SBA VDAC Voice DAC Stopband Attenuation Above 4kHz 72 dB UPB VADC Upper Passband Cutoff Frequency Upper – 3dB Point 3.47 kHz LPB VADC Lower Passband Cutoff Frequency Lower – 3dB Point 0.230 kHz SBA VADC Voice ADC Stopband Attenuation Above 4kHz 65 dB SBA NOTCH Voice ADC Notch Attenuation Centered on 55Hz, figure gives worst case attenuation for 50Hz & 60Hz 58 dB SNR (Voice) Signal-to-Noise Ratio of Voice Channel (Voice ADC path) Signal = V O at f = 1kHz and 1% THD+N, MIC_P, MIC_N terminated to ground, A-weighted, 36dB MIC Preamp gain setting (Note 10) f MCLK = 12.288MHz, PLL disabled 83 dB f MCLK = 12MHz, PLL active 81 dB STR Side Tone Range Minimum –30 dB Maximum 0 dB SS Side Tone Step Size 3 dB Audio DAC (Typical numbers are with 6.144MHz audio clock and 48kHz sampling frequency) R DAC Audio DAC Ripple 20Hz – 20kHz through headphone output +/- 0.1 dB PB DAC Audio DAC Passband width –3dB point 22.7 kHz SBA DAC Audio DAC Stop band Attenuation Above 24kHz 76 dB DR DAC Audio DAC Dynamic Range DC – 20kHz 97 dB SNR DAC Audio DAC SNR Digital Filter Section DC – 20kHz 97 dB PLL www.national.com 10 |
Số phần tương tự - LM4931_06 |
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Mô tả tương tự - LM4931_06 |
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